Born in Perthshire, he began life as Ralph Stewart Hood Wilson, the elder son of Aubyn Harold Raymond Wilson and his wife Muriel Athelstan Hood Stewart of Balnakeilly, of Moncreiffe House, Dunbarny, Perthshire. The young Stewart-Wilson was educated at Eton College.[3]
In 1941, he left Eton and was commissioned into the Rifle Brigade. On 5 December 1944, he was awarded the Military Cross for his reconnaissance work under heavy fire during the advance on Aquino.[1][5]
Stewart-Wilson saw further active service in Kenya and Malaya in the 1950s. He retired from the Army in 1971, with the rank of Colonel.[1]
Following the death of his mother in 1982, he was laird of Balnakeilly, near Pitlochry, in Perthshire, and died there on 2 February 2015.[1]
^WILSON Aubyn Harold Raymond of Yarraberb Raywood Victoria Australia died 19 May 1934" in Wills and Administrations 1934 (1935), p. 500(subscription required)