The original seat of the Clan Campbell was either Innis Chonnell Castle on Loch Awe or Caisteal na Nigheann Ruaidh on Loch Avich. The clan's power soon spread throughout Argyll, though at first the Campbells were under the domination of the Lords of Lorne, chiefs of Clan MacDougall. The MacDougalls killed the Campbell chief Cailean Mór (Colin Campbell) in 1296. (See: Battle of Red Ford). All of the subsequent chiefs of Clan Campbell have taken "MacCailean Mór" as their Gaelic patronymic.