Sitric Cáech
Sitric's son Gofraid later reigned as king of Dublin , his son Aralt as king of Limerick , and his son Amlaíb Cuarán as king of both Dublin and Northumbria . 
<triplet> Gofraid <subj> Amlaíb Cuarán <obj> sibling <triplet> Amlaíb Cuarán <subj> Gofraid <obj> sibling