Owain Cyfeiliog
Owain was the son of Gruffydd ap Maredudd ( and thus grandson of Maredudd ap Bleddyn ) and nephew of Madog ap Maredudd , the last prince of the whole of Powys . 
<triplet> Maredudd ap Bleddyn <subj> Madog ap Maredudd <obj> child <triplet> Madog ap Maredudd <subj> Maredudd ap Bleddyn <obj> father