Career
After marrying Averil Mackenzie-Grieve in 1925. In preparation for his Secretaryship he spent from 1925 to 1927 on Gulangyu Island, at the time an extraterritorial International Settlement in order to learn Hokkien language and culture. At the end of 1931 his "Selections from the Works Su Tung-t"o" was published.
The Yorkshire Post and Leeds Intelligencer praised the translation for its "gracefully natural prose."
On 31 March 1941 he announced the decision of the Rajah of Sarawak, Charles Vyner Brooke, to introduce a democratic constitution.
After the Japanese invasion of Sarawak in December 1941 Le Gros Clark was captured and held in Batu Lintang camp. From July 1942 until 14 November 1944 he served as the camp master.
He was executed two months before the end of World World War World War II