Maredudd ap Tudur
Maredudd supported the Welsh rebellion of Owain Glyndŵr in 1400 , alongside his brothers Rhys ap Tudur and Gwilym ap Tudur; Owain was their cousin . 
<triplet> Rhys ap Tudur <subj> Gwilym ap Tudur <obj> sibling <triplet> Gwilym ap Tudur <subj> Rhys ap Tudur <obj> sibling