His mother was Anne Elizabeth, daughter of Sir John Lowther Johnstone, 6th Baronet, while Thomas Sotheron-Estcourt was his uncle.
In 1876, he succeeded to the latter's estates and assumed by Royal licence the surname of Sotheron-Estcourt.
[1] Estcourt sat as Member of Parliament for Wiltshire North from 1874 to 1885.
[2] In 1903 he was raised to the peerage as Baron Estcourt, of Estcourt in the Parish of Shipton Moyne in the County of Gloucester and of Darrington in the West Riding of the County of York.
[3] Lord Estcourt married Monica, daughter of Reverend Martin Stepylton, in 1863.