Gruffudd MAREDUDD & Gwerful verch GWRGENEAU 
They had a son named Owain Cyfeilog ap.
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Children
Owain Cyfeilog ap GRUFFUDD
Owain Cyfeilog ap was born in 1125 in Souhtern Powys, Wales. He died at the age of 72 in 1197 in Monastery at Strata Marcella.