Tewdwr Ap Cadel+ Seisyllwg 
He had a biological son named Rhys ap Tewdwr Mawr Of+.
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Personal Details
Tewdwr Ap Cadel+ Seisyllwg
Tewdwr Ap Cadel+ was born about 0977 in Dynevor, Llandyfeisant, Caernarvonshire, Wales.
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Children
Rhys ap Tewdwr Mawr Of+ Deheubarth
Rhys ap Tewdwr Mawr Of+ was born about 1020. He died in 1093 in Near aberhonddu, Breconshire, Wales.