 Complete the following phrase:  Judging by the genealogical references, Coel Hen must have controlled a large part of the Hen Ogledd. As an ancestor figure, he compares to Dyfnwal Hen, who is likewise attributed with founding kingly lines in the Hen Ogledd. Hector Boece and Ayrshire folklore both state that Coel and his entire army perished in the Battle of Coilsfield. According to Welsh tradition the region of Kyle was named for Coel, and a mound at Coylton in Ayrshire was regarded as his tomb. Projections back from dated individuals suggest that Coel Hen lived around AD 350420, during the time of the 