According to the Chronicle of the Kings of Alba, Rhun was married to a daughter of Cináed. This alliance may have been contracted between the Britons and Picts as a way of repairing international relations following the attack on Dunblane in 849. Rhun is the last listed king in the Harleian pedigree.
The Chronicle of the Kings of Alba indicates that Rhun married a daughter of Cináed. This matrimonial arrangement could have been an attempt to reconcile international relations between Britons and Picts after their attack on Dunblane in 849. Rhun is positioned last in the Harleian pedigree.