Alastair Ruadh MacDonnell, Scottish spy (born 1725)

Alastair Roy MacDonell of Glengarry (ca 1725–1761; Scottish Gaelic: Alasdair Ruadh MacDomhnaill, was the 13th chief of Clan MacDonell of Glengarry. Brought up as a Catholic and largely educated in France, he was arrested in November 1745 on his way to join the 1745 Jacobite Rising.