Gillean's adopted son Malise took the name Gillemor ("Giles the Great") in 1263 and wrote his name as "Gillemor Mcilean ("Giles the Great, son of Little Giles"), Count of Perth" on the third Ragman Roll of 1296. This is the first instance of the name being used and gives credence to the theory that it is a patronymic for the clan's founder. Gillean Fitzgerald led his followers against the Norsemen at the Battle of Largs in 1263 during the Scottish-Norwegian War where the Scottish were victorious. http://macleanclan.com/maclean-chiefs/malise-mac-gilleain
The Clan Gillean, Page 37, by Rev A MacLean Sinclair 1899 Gillecalum or Malcolm, son of Malise .. must have been born about the year 1270 and was a prominent man in 1296 his name means servant of Jesus
History of Clan MacLean by J.P. MacLean - page 35 "The name of Gille-Moire MacGilleain is attached to the Ragman Roll in 1296. It appears to be the same as Gille-Calum of the genealogists. This is a point by no means certain, but is more than probable
