Ebraucus
He founded two settlements: Kaerebrauc , the City of Ebraucus ( Eboracum ) , north of the Humber ( this later became York , whose Welsh name is "Efrog" ) ; and Alclud in Albany ( now part of Dunbarton , capital of Strathclyde ) . 
<triplet> Dunbarton <subj> Strathclyde <obj> capital of <triplet> Strathclyde <subj> Dunbarton <obj> capital