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Llywelyn ap Seisyll


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Was a descendant of Rhodri ‘the Great’ through his mother Prawst, a great-granddaughter. His marriage to Angharad, daughter of Maredudd, gave him a claim on Deheubarth. After the death of Maredudd in 999, Deheubarth was disputed and lost control of Gwynedd. Llywelyn recaptured Gwynedd from Cynan in 1005, and added Deheubarth in 1018 by killing Aeddan ap Blegywryd and his sons. In 1022, at Abergwill, he defeated an Irish adventurer, Rhain, who claimed to be a son of Maredudd. Llywelyn died shortly afterwards in 1023, leaving a son, Gruffydd, who succeeded later in reuniting Gwynedd, Powys, and Deheubarth.

Subjects: British History.


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