Phillp SkeneDied Jun 22, 1788
3rd of Pitlour, son of David Skene of Pitlour and Jean Douglas of Strathendry (d. 1783). Brother of Robert Skene. Cousin (on his mother's side) of philosopher and economist Adam Smith. He died unmarried, having achieved the rank of General, and was succeeded by a nephew.
Life with Boswell:
Boswell breakfasted with Skene (then a colonel (possibly of the 69th foot)) on March 15, 1763.
Two other high-ranking army officers named Philip Skene lived in the last half of the 18th century. A lieutenant of the 72nd foot who died in 1774 and another one who was active (on the British side) in the American revolution and who died in 1810. (Link)