 There is a charter allegedly issued by Domhnall to Paisley Abbey , found in the cartulary of that abbey . In this charter Domhnall is given no title , instead merely described by his genealogy : Douenaldus filius Reginaldi filii Sumerledi , " Domhnall , son of Raghnall , son of Somhairle " . This charter is thought by some historians to be spurious , mainly because the witness list and wording of the charter are , in the words of Alex Woolf , " suspiciously similar " to those in a genuine charter of Domhnall 's son Aonghus Mór . Presumably , the explanation is that the monks of Paisley Abbey at some later stage may have thought it in their interest to replicate Aonghus Mór 's charter in order to add the authority of the founder of Clan Donald to their land rights . 
