I am aware of an Archibald "Gilleasbuig Mor" MacDonald who married Mary Campbell. They lived at Sight Point, Inv. and and had nine children including two sons named Angus. This information comes from Mabou Pioneers I, p. 517 and states that
2. Angus MacDonald, "Aonghas Mor", son of Archie was not married. and 5.
Angus MacDonald, "Aonghas Beag", was married without issue.It looks like your reference points to 5. "Little Angus".