Triffyn Farfog, King of Dyfed
Triffyn mac Aed Brosc was apparently the first King of Dyfed from the House of Eochaid Allmuir. This leading family from the tribe of the Déssi had crossed the Irish Sea three generations earlier to settle in West Wales (See Aed Brosc's Ancestry). Triffyn the Bearded appears to have married Gwledyr, the heiress of the British Kings of Dyfed, in the mid-5th century, though she was probably somewhat younger than him. Together, they inherited the kingdom. His name, "Tribune", may indicate that his family was brought over by the Roman administration to help protect the area against invading fellow Hibernians.