Lorne. A cairn called Carn Chailein, located within 2 km of Kilbeg on Loch Avich, is traditionally said to mark the place where Cailean was killed. The age of the cairn is unknown, although it seems to have been in existence by the seventeenth century. Marriage and issue According to the 17th century compilation Ane Accompt of the Genealogie of the Campbells, Cailean married Janet Sinclair, daughter of Sir John Sinclair of Dunglass. However, by its own admission, this document is not intended on being perfectly accurate, and there are no 13th century documents known to verify such a marriage took place. Ane Accompt states that they had the following children: Domhnall mac Cailein Neil (or Niall) Campbell, died 1315 Gillespic (or Archibald) Campbell Dougall (or Dugald) Campbell Other sources attest to an unnamed daughter who married Aonghus Mór mac Domhnaill, and A History of Clan Campbell assumes that two entries in the Ragman Rolls (Duncan Campbell of Perth and Donald Campbell of Dunbartonshire) were also sons of Cailean. Neil's great-grandson, Colin Iongantach Campbell, married Mariota Campbell, herself a descendant of Cailean's son Dougall. Their son was Duncan Campbell, 1st Lord Campbell, which makes Cailean a patrilineal ancestor of the Earls and Dukes of Argyll, who styled themselves "Mac Cailein Mór," son or descendant of "Colin the Great." Notes References Boardman, Stephen, The Campbells, 1250-1513, (Edinburgh, 2006) Sellar, W. David H., "The Earliest Campbells - Norman, Briton, or Gael", in Scottish Studies, 17 (1973), pp. 109–26 Clan Campbell Medieval Gaels from Scotland 13th-century Scottish people