Domnall mac Donnchada (Modern Gaelic: Dòmhnall mac Dhonnchaidh), anglicised as Donald III, and nicknamed Domnall Bán, "Donald the Fair" (anglicised as Donald Bane or Donalbane), (died 1099) was King of Scots from 1094 1097. He was the second known son of Duncan I (Donnchad mac Crínáin). Donald's activities during the reign of his elder brother Malcolm III (Máel Coluim mac Donnchada) are not recorded. It appears that he was not his brother's chosen heir, contrary to earlier custom, but that Malcolm had designated Edward, his eldest son by Margaret of Wessex, as the king to come. If this was Malcolm's intent, his death and that of Edward on campaign in Northumbria in November 1093 (see Battle of Alnwick (1093)) confounded his plans. These deaths were followed very soon afterwards by that of Queen Margaret. John of Fordun reports that Donald invaded the kingdom after Margaret's death "at the head of a numerous band", and laid siege to Edinburgh with Malcolm's sons by Margaret inside. Fordun has Edgar Ætheling, concerned for his nephews' well-being, take the sons of Malcolm and Margaret to England. Andrew of Wyntoun's much simpler account has Donald become king and banish his nephews.