First, I understand that this is largely a copy/paste job, some sections have minor edits, some have been completely rewritten, others have just had demographic data added; but I did make the effort to put all of the Human ethnic groups and their appearances on Garnia world into chronological order and add that demographic data, plus the minor edits, so, here you go.
The Egyptians (now extinct) migrated circa 2500 BC - Their culture would have been here for 1504 years, more than enough time to build their entire civilization up around their new Nile in Alt-Africa. Then the Goblins Zerg rushed them and ate them over the course of a few generations, adopting their culture and religion, but in an evil, Goblin kind of a way. Along with the Goblins in Egypt, at campaign present a tributary kingdom subject to Nova Roma, there are significant populations of Rakasta and Flind. For what it's worth, they would have been here for 125 generations and had a starting population of 5,000.
The Kushites migrated circa 1000 BC and were presumably placed by the Sidhe, for whatever reason right next to their real life Earth neighbors the Egyptians. I am going to make a judgment call here and say that in the 1004 years (which is 50 generations) they've been here they started out as allies of the Egyptians and when the Goblins killed off Egyptian culture they fled away from that losing war, and have fought a long guerrilla war against any Goblinoid incursions into their territory ever since. Their starting population will be 5,000.
Vedic era Indians - I am bringing them in circa 750 BC Earth time and they live at the southern end of the Tirnakaur peninsula, I am thinking one small, forgotten city that was destroyed by disaster, I think a great flood, 5,000 people. This makes them Hindu with all of the Vedas and they speak Sanskrit and work iron. Time compression means they've been here for 920 years or 46 generations at campaign present. That's longer than the Celts, but they start in a crappier area, those mountains are infested with Goblinoids and worse, then there's a vast expanse of forest to cross to get to the really good lands.
Pagan Arabs - They could really be from anytime before Muhammad, but I am going to try and keep a more ancient focus here and say they are from the semi-Mythical kingdom of Sheba; which is mentioned several times in the Bible and was probably in modern Yemen. They were traders and controlled the Red Sea trade route so coastal shipping is not beyond them, they were conquered by their Arab neighbors to the north in the 2nd century BC and their capital city was destroyed. They made a comeback eventually, but I am grabbing them from their powerful classical period, when they straddled the Red Sea as a kingdom. So, 300 BC, random natural disaster, say sandstorm of enormous proportions destroys major Sheban settlement of say 8,000 people. They end up on the same end of the Tirnakaur peninsula as the Vedic Indians, who welcome them as they are being hard pressed by an invasion of Goblins, Ogres, Giants and Trolls when they arrive with their slightly superior technology. They've been here for 770 years or 38 generations, also longer than the Celts. Their culture and language became slightly dominant over the Vedic Indians, but they mostly are pretty cool with each other.
The Celts come in next, starting in 60 BC, at 687 years ago, or 34 generations, within 2 1/2 Garnian years their population goes from the initial 120,000 religious pilgrims, to 280,000 people, the extra 160,000 Celts being refugees from Caesar's conquest of Gaul. A further 100,000 refugees from the Roman conquest of Britain arrive over the course of the next 30-50 Garnian years. Circa 428 AD a mass migration of Irish pagan Celts arrives, St. Patrick, on Earth declares victory for having "Driven the snakes from Ireland"; 25,000 Irish Druids, Bards, Warriors and Farmers arrive. That's about 10% of the total estimated Irish population at the time of St. Patrick, but you know how stubborn the Irish can be about religion. Next migration will be from Scotland as Picts resist Christianization at the same rate, they are the last Druids on Earth. Assume at about 600 AD 3,500 Picts arrive, as there just aren't that many of them. Further Celtic migrations will continue to happen, but they will continue to get smaller and smaller as the magical power of Earth fades. The Celts will give birth to five major nations in this world, and are the largest Human ethnic group.
Next we get a substantial population of Romans from the 79 AD eruption of Vesuvius, we may get a few more, here and there, and there may have been a few before, but this is like direct divine intervention by the Sidhe since they know the Celts and Romans are traditional enemies by now and the Celts are becoming a nuisance. They get the summer population of 1/2 of Campania for their start 644 years ago the Romans estimated 16,000 citizen deaths, so take that for what it's worth. How many non-citizens and slaves died there too? 2 for every Roman? Did they only count men as citizens? Modern archaeologists have no way of estimating the total death toll, it's certainly in the thousands, is it more than 20,000? 30,000? 50,000? Pliny the Elder died there and he was one of the greatest minds of his time. The Romans get to move into an area that is pretty much exactly like the one they left behind too, so they are going to get some serious advantages. Let's call the total sarting group 35,000 and they've been here for 644 years, or 22 generations. They also have the Gorilla Sapiens living in their empire, and they have readily chosen to adapt to Roman culture, as have significant numbers of Dwarves.
Then the Chinese, who have only been here for since 250 AD earth time or 587.3 years Garnia time, equaling about 29 generations, building the Empire of Ming Liang. I demonstrated with math before, at the early stages of the blog how I made my assumptions of population growth for the Celts, the Ming Liang are in an area that is actually pretty well suited to them, I am willing to give them a greater rate of growth than the Celts because their traditional way of life is in no way compromised, they just moved, as though they were moving to new village lands- the first generation might have a tough time building stuff from scratch, but after they're cultivating rice and silk and all the other traditional Chinese things they would have brought with them, it will be easy to expand. Assume 50,000 original settlers, and an 80% growth rate/generation until they fill all the good coastal and river lands, then slow them down to about 65% until all of their country is at peak capacity.
Additionally, this area also is the homeland of the Halflings, should they continue to exist, and they are a race that is by nature Good aligned, so they would probably help the new settlers. Although that's going to work out kind of like the Native American Indians helping the European settlers. Halflings may live longer but they don't breed as fast, mature as fast, or have the capacity to become as powerful as Humans, the Halflings are going to become a subject people of the Ming Liang, but not really in a bad way.
Next up are the Saxons. They showed up in Wodanslund about 450 AD or 520.6 Garnian years ago, which is about 26 generations; and have divided their time between building fortresses, sweeping Humanoids from the plains (and ultimately making expeditions into the mountains surrounding their vast plain), becoming horse riding cattle lords, and hiring themselves out as mercenaries, primarily to their neighbors to the north- Frodia. Most of Frodia's professional soldiers are Wodanslunder mercenaries, leading many outlanders to believe that Wodanslund is a subject kingdom to Frodia, but this is not the case. The Wodanslunder Saxons will have a starting poulation of 1,500.
Next up are the Norsemen, who have been here, off map, since 862 AD for about 383.3 years, or roughly 19 generations, since they live on an island chain that is unlikely to affect the main campaign area and are too far off map to make the voyage to the nearest part of the map, they are, in essence, a separate campaign. They are also only starting with about 2000 people.
San - Apparently these guys, also known as Bushmen, have been in South Africa for something like 15,000 years. I am going to grab some from about the time the Zulus start to rise up and kick all of their asses into the Kalihari desert, these guys are serious stone age hunter-gatherers. They store water in Ostrich Egg shells and eat caterpillers and grasshoppers, along with anything else they can forage up. I am doing them the "favor" of moving them to the desert west of Wodanslund, otherwise they'd easily end up as a slave caste to the Muslim Arabs too. Now the Zulus really start to rise under Shaka, pre-Shaka they were just another clan of Bantu speakers in southern Africa, they mostly got kicked around by the other Bantu speakers and lived in crappy land that they forced some of the San out of. Shaka comes to power in 1816, Zulu ancestors had been in the neighborhood since about 1000 AD. So I am bring my San over in 1000 AD, they don't live in villages, just mobile bands, so this group of mobile bands, say 2000 people, just walk directly to Garnia World, how? Who knows, ancient San magic? Sidhe felt bad for them? Anyway, they have been here for 337.3 years, or roughly 17 generations.
I guess the next people on the list are the Chagatai/Golden Horde coming from circa 1300-03, when a severe drought caused untold devastation and starvation to both hordes, they were at peace with each other and everyone else for this brief period, so we'll save some people and animals and move them over to Garnia World then, it's the perfect time, neither horde is religiously zealous yet. The Khan of the Golden Horde is a theoretical Muslim, but he gets married to the daughter of the Byzantine Emperor, an Orthodox Christian and Muslims of his court referred to him as an Idol worshiper (either Buddhist or Tengerist), despite his favoritism towards Islam. So, if they came in 1302 AD, they've been here for about 236.6 Garnian years, or about 12 generations; I am going to start them off with a conservative 15,000 people roughly 1/2 Turkic and 1/2 Mongol, plus their yurts and herds; but they're in an odd position of actually being near remnant cities of the Sidhe Empire who have learned how to play the ancient game of "let's keep the Humans divided", so they are really broken down into many warring clans of either Turkic or Mongol speaking peoples with shifting alliances and a fading memory of the golden days of Genghis Khan.
Muslim Arabs - These guys can come from anytime after Muhammad, but I want them to be not right after his revelation or lifetime. I want them to have Damascus steel and Scimitars, so I have to wait until both of those are invented. I looked it up and it's later than I thought when I talked to Darryl about it earlier. Damascus Steel isn't a problem, it dates to the 3rd century BC, but Arabs didn't START using Scimitars until after the Mongol invasion and conquest of Baghdad. Call it a century or so later for them to be in common usage and we're looking at the mid-14th century. I am cool with that, we have some fairly late arrivals yet to come, and it explains their superior sailing technology. So in 1350 AD, a hardy group of Arabs end up over here, that's 220 years, or 11 generations, since they arrived and formed their "Maritime Emirates/Pirate Isles" and began wondering which direction was Mecca I guess. Give them an initial population of 5000 people or so.
Then we get the Japanese from the end of the Nanboku-Chō war 1399 AD earth time. That gives them 204.3 years here, or 10 generations, during which time they've colonized an island chain, established a Shogunate and greatly improved their seafaring skills, ironically based on Chinese designs. They have recently established trade with the Ming Liang, but have a vast edge in seafaring technology and many other skills that the Japanese originally got from the Chinese. Assume a starting population of 15,000 retainers and loyal peasants.
Next are the Greeks from Trebizond, who are beating feet to out run the Ottoman empire when they find themselves on a weird foreign shore. They made their voyage in 1404 AD Earth time, so they've been here for 202.6 years, which is roughly 10 generations. They're a civilized and advanced medieval/renaissance people so I think they'll do OK. The only people close to them are the Norsemen, with whom they have made trading contact. The Greeks got the better island, it's almost a mini-continent all off by itself. They get a starting population of, say, 5,000.
The Aztecs - they entered the valley of Mexico fairly late, they were relative newcomers when Cortez came and kicked their asses. They showed up and started kicking ass around the 1300's AD, so we need to grab some before they all get infected with various White Man diseases by the Spaniards, before 1519. Let's pick a spot in the middle and say they were supposed to be wiped out by a volcanic eruption, but the Unseelie Court really loved their heart-ripping-out mass Human sacrificial style, a small Aztec city of, say, 12,000 people are transported to their new home, buildings and all, right near the coast so there's fishing too. They formed the Empire of Xochitli (which means "Flowers" in Nahuatl, the Aztec language). They've been here since 1425 AD, so that's 195 Garnian years, or about 10 generations.
The Roma - commonly known as Gypsies, they don't even come into existence until the middle ages, so we have to wait for that anyway. I am bring them in from 15th century France, they've got all the traits associated with Gypsies at this point (fortune telling, bright wagons & metal working) and they'll be happy to get away from the increasing prejudice. So 1450 AD, meaning they've been here for 187.3 years, or about 9 generations. We'll bring 1500 or so of them.
Iroquois - Their confederacy wasn't even formed until sometime after 1450 AD, possibly as late as 1600, although the proto-Iroquois peoples were living in the Finger Lakes region as early as 1000 AD. I am acting under the assumption that we want real Iroquois and not their ancestral group, so I will pick a spot in the mid-range 1525, meaning they've been here for 162 years, or 8 generations. I will be nice though and move them into the forests of Tirnakaur instead of the Swamp that the Muslim Arabs live in; otherwise I think a stone age people are going to be slaves, even as bad-ass a stone age people as the Iroquois. The Celts in Tirnakaur have too much else to worry about to try too hard to make this new band of Humans their property. Which tribe of Iroquois do we want to bring? Should I just roll a D6? Or a D10 and divide by 2 because technically the Tuscarora weren't part of the league until 1722. We can't have them all. I rolled Mohawk, which is the result I think most people would have wanted anyway. Their relative low population density means I can't see them losing more than about a 1000 people without it being really noteworthy, and that's pushing it.