This is a blog for the World of Garnia development team.
This post really should have been more of a comment I guess, but I didn't want to leave anything out.
Oh, and to answer the question about the Picts, not really, no. The best guess is that they were already culturally similar enough to the Gaels that assimilation was a simple matter. In fact, the Gaels had a hard time maintaining control over Pictish areas of the kingdom and more than one king died putting down Pictish rebellions. They were also the most stubbornly Pagan native British tribes, resisting Christianity for as long as the Anglo-Saxons did. The weird thing is that the Picts only became part of the Kingdom of Alba (previously known as Dalriada) because of a dynastic marriage that united the Picts with the Gaels, under the Gaelic house of Alpin, in the person of Cináed mac Ailpín, who, even though a Gael was the heir and ruler of the Pictish kingdom of Fortriu- the Picts apparently tracing descent through the female line, which makes sense, you always know who your mother is.