son of Edwin ab Einion and great-grandson of Hywel Dda. When, in 1033, the usurper, Rhydderch ap Iestyn died, Hywel and his brother Maredudd, as senior heirs of Hywel Dda, became joint kings of Deheubarth. Maredudd's death in 1035 left Hywel sole ruler, and on him fell the brunt of defending the south against the Vikings and the northern usurper, Gruffudd ap Llywelyn. Expelled by Gruffudd in 1042 or 1043, he returned in 1044, with the Danes as allies, and was killed in battle at the mouth of the Towy.
Published date: 1959
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