In the 16th century John Bushe of Dilton, Wiltshire, came to the Clarenceux King of Arms, probably William Harvey, and required of him to search his records to identify how he [John] was descended of "dwyland to bushe" [REF].
Ieuan's ancestry can be traced even further back since Cadwgan Fawr was a descendent of the tribal patriarch Llywelyn ap Gwrgan, whose paternal line traces back to the 6th-century Pliws "Hen", king of Dyfed [REF].