More recent information on Picts shows that they were Celts, speaking a language within or related to Brythonic Celtic languages like Welsh. They controlled th

More recent information on Picts shows that they were Celts, speaking a language within or related to Brythonic Celtic languages like Welsh. They controlled the eastern portion of Scotland while the Irish-related Gaels controlled the western portion. As the Anglo-Saxons came in, followed by the Vikings, there was a lot of mixing resulting in modern Scottish populations.