Lt. Col. William Francis Cyril James Hamilton Napier, 13th Lord Napier, 4th Baron Ettrick DL (9 September 1900 – 23 August 1954) was a Scottish soldier and courtier.
During this time, he served as the commanding officer of the 6th Battalion of the Scottish Borderers (from 1939 to 1941), as well as assistant adjutant general of the War Office (from 1943 to 1944 – under General Sir Ronald Adam).
He was elected into the Royal Company of Archers in 1930, and held a number of political positions, including county councillor for Selkirkshire (from 1946 to 1948) and DL and JP for Selkirkshire.
[2] On 28 September 1928, he married Violet Muir Newson, a daughter of Sir Percy Newson, 1st Baronet and Helena Franklin (a daughter of Lt.-Col. Denham Franklin).
Together, they had four children:[2] Lord Napier died on 23 August 1954 and was succeeded by his eldest son, Nigel.