 In <unk> , the year before his grandfather 's death , Domnall and an Uí Chennselaig kinsman , Donnchad mac <unk> <unk> , battled for control of Leinster . Although Domnall is accorded the title King of Leinster in one mediaeval king @-@ list , Donnchad was evidently a more powerful claimant , and Domnall appears to have held the Leinster kingship in name only . 
