Rhodri ap Hywel
The sons of Hywel were not able to keep hold of Gwynedd , which was reclaimed for the traditional dynasty of Aberffraw by Iago ap Idwal and Ieuaf ap Idwal , the sons of Idwal Foel . 
<triplet> Iago ap Idwal <subj> Ieuaf ap Idwal <obj> sibling <subj> Idwal Foel <obj> father <triplet> Ieuaf ap Idwal <subj> Iago ap Idwal <obj> sibling <subj> Idwal Foel <obj> father <triplet> Idwal Foel <subj> Iago ap Idwal <obj> child <subj> Ieuaf ap Idwal <obj> child