During the late 15th century (probably) on Mull a feud took place between Maclean of Duart and Maclean of Lochbuie over land ownership (not over chiefly rights). Duart imprisoned Lochbuie on an island with an ugly crone as a servant. Nature took its course and a child arrived who later inherited the Lochbuie chieftainship. Legend?
More about the son, Murdoch the Short:
Ewen was killed prior to 1538 in a feud with his father John Og, who had gone to Hector Mor Maclean of Duart for support against Ewen. After the Battle, Hector Mor imprisoned John Og on the fortress island of Cairnburg Mor, on of the Treshnish Isles about two miles off the coast of Mull, away from women so that John Og could have no new heir. Without a Lochbuie heir, Hector Mor felt that he could easily take over the lands of Lochbuie. He did allow John Og to have an ugly maidservant however, and in due course she became pregnant.
The story goes that when Duart found out that the maidservant was pregnant, she was taken to Torlosik so that they could keep an eye on her. There, Duart directed the doctor (Ollamh Muileach, in Pennyghael), that if a daughter was born it could live, but if a son was born he was to kill the child. One version of this story says that the maidservant bore twins, a son and daughter. The nursemaid, who had been friends with (Ewen the Little Head), showed only the daughter to the doctor and hid the son, named Murdoch Gearr or(Murdoch the Stunted) he was born about 1496. The nurse took the child to Glencannel, where he was raised by a family of MacGillivrays.
John Og was succeeded by his illegitimate son Murchadh Gearr, or(Murdoch the Short), who became the sixth Maclaine of Lochbuie, he was legitimated in 1538.