Hi Eilidh,
your MacPhersons are probably related to my lot. It's just a shame that there are no records from the mid/late 1700's to positively identify these Sleat family relationships.
My Christina MacPherson born abt. 1747 could have been a cousin or sister to your Angus.

Other early MacPherson families that may tie in somehow -
Angus MacPherson married abt. 1815 to Mary Nicolson, daughter Marion born 1815 at Stonefield.
Miles MacPherson who married Marion McLure in 1799, at Camuscross
Catherine MacPherson (daughter of Peter MacPherson) who married William McLure abt. 1816. This family lived in Stonefield and had Una, Farquhar, Ewen, William and Donald.
Donald Robertson and Marion McGillivray - I have details of the death certificate of Catherine Robertson who was born abt. 1831. She married Ranald Robertson in abt. 1862, children - John, Samuel, Mary, Marion and Donald. She died November 8, 1873 at Aird. her parents names - Donald Robertson and Marion McGillivray. Is this your family? I'm sorry that is is the only info I have on them, but I hope it is usefull.
