MacGillonie or MacGill'Eoinidh, according to MacIntosh was a famous hunter in the Grampian Mountains, Scotland and several vestiges of his huts were be seen in the mountains of Atholl in 1785. The MacGillonies belonged to Clan Cameron, but were originally allied to the MacLeans.
An old proverb states:
MacGillonie's "brown cow" was the wild mountain doe.
This article incorporates text from "Dwelly's [Scottish] Gaelic Dictionary" (1911). (MacGill'Eoinidh, sguaban-stòthaidh)