In 1681–1685, Watson was Whig Member of Parliament for Canterbury and for Higham Ferrers briefly in 1689, before having to leave the Commons on inheriting his father's barony that year.[1][2]
Memorial to Lewis Watson, 1st Earl of Rockingham (d.1724) in St. Leonard's Church, Rockingham
His wife died on 21 March 1696 and was buried at Rockingham. He died on 19 march 1724 and was buried 1 April at Rockingham.[6] He was succeeded by his grandson, Lewis.[3]
Cokayne, G. E. (1949). White, Geoffrey H. (ed.). The Complete Peerage, or a History of the House of Lords and all its Members from the Earliest Times. Vol. 11. London: St Catherine Press. pp. 56–62.