King Arthwyr Of Seisyllwg Ap Seisyll 
He had two biological sons named Dyfnwallon and Dyfnwallon Of Seisyllwg.
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Personal Details
King Arthwyr Of Seisyllwg Ap Seisyll
Arthwyr Of Seisyllwg was born in 0730 in Ceredigion, Wales. Arthwyr Of Seisyllwg is no longer alive.
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Children
Dyfnwallon Ap Arthen
Dyfnwallon was born in 0755 in Ceredigion, Wales. Dyfnwallon is no longer alive.
King Dyfnwallon Of Seisyllwg Ap Arthwyr
Dyfnwallon Of Seisyllwg was born in 0770 in Ceredigion, Wales. Dyfnwallon Of Seisyllwg is no longer alive.