 The latter was a descendant of Robert Smith, of Ilminster, from whom the Smith-Marriott baronets are also descended.The fifth Baronet (whose father Reverend Spencer Compton Hamilton-Spencer-Smith had assumed the additional surnames of Hamilton and Spencer in 1872, having married Mary, daughter of Admiral Cospatric Baillie-Hamilton, a descendant of Thomas Hamilton, 6th Earl of Haddington), was a member of the Military Inter-Allied Commission of Control from 1920 to 1924.The sixth Baronet discontinued the use of the surname of Hamilton.