Then read and learn simple truth. Old Picts were old Sarmatians, ie old Slavs >>>
BORDER REIVERS DNA STUDY
During the reign of Marcus Aurelius, the Sarmatians became dangerous again. Other groups had joined the federation (e.g., the Alans), and the Romans had to fight several bloody wars against the Sarmatians and their allies, the Marcomanni. Ultimately, the Romans were successful, and for almost half a century, the Danube frontier was more or less safe. In the third century, however, the Sarmatians occupied Dacia and from now on, the war against the tribes on the north bank of the Danube was really dangerous.
In the early fourth century, the Roman emperor Diocletian resettled the Iazyges, and his successor Constantine accepted many Sarmatians as farmers on the Balkans. Those who remained north of the Danube, were destroyed by the Huns.
The Vance markers were I1a. When run against the YSTR database, we found no matches - but the closest match, off just one-step on the 389ii, was in Northern Poland. The next closest match was in Macedonia. The other close matches clustered around Poland, Slovenia, Austria, eastern Germany. This was clearly a Gothic match pattern and does indeed suggest that the Scotch-Irish Vances were descended from the original Visigothic De Bauxes.
The Picts: Another possible explanation of the Hypothethized ht35 Haplotype in the Anglo-Scottish Borders area which has been suggested is that the Picts were actually Scythians, and they were the source of the DYS393=12 phenomenon found in the area.
Therefore Bede is believed to be using the first hand account of a Scot's view of their history. It is not inconceivable also given the original and then occaisional co-operation between Scots & Picts that this may well be the story which the Picts themselves believed to be their own history.....ie that they were descended from Scythians.
I've also found a map which shows the Roman Empire in A.D. 14 showing provinces added after A.D. 14. Saramatae (land of the Sarmatians?) is shown at this point next to Germania, with the boder appearing to be the river Vistula in what is now Poland. This river and possibly access to the Baltic Sea would allow Bede's reported story of the Picts (the Sarmatians, descendants of Scythians) coming in ships to be plausible at some point well before the Roman invasion of Britain. I think your research mentions something about a Polish connection.