So, who exactly were the Picts? They were a mysterious group of people who resided in what is now northern England and southern Scotland and popped up in the annals of Roman history in the first few centuries CE. Although not a great deal is known about the Picts, historians do know that they caused quite a bit of trouble for the Romans, who were trying to conquer every inch of land they could get their spears on. However, there are plenty of Pict facts aside from their Roman relationships.