From BBB:
15 b in Dublin 15 Jun 1801. Educ at Trinity Coll, Dublin; fellow-commoner 1819. Apparently did not graduate. Ensign (by purchase) 22nd Foot, 4 Oct 1821; Lt: 1 Aug 1826. The regt went back to Jamaica at the end of 1826 from Ireland, and remained there until early 1837; during 1831-32, it was employed in the suppression of a formidable insurrection among the slaves. It returned to Ireland in 1837, staying there until 1840. Capt: 1828, and Major: 1836, both by purchase. Lt Col, by purchase: 1840. In 1841 the regt went to India, and was in the Scinde campaign; but Samuel was not present at the battles of Meeanee and Hyderabad, as he appears to have been comd the garrison at Karachi. The 22nd then returned to Poona; in 1844-45 took part in ops in S India; and back to Poona and Bombay for the next 4½ years.
By 1849 Samuel was comd the Poona Bde, and later that year the regt went to the Bengal Presidency, being engaged in 1853 in punitive ops against an Afridi tribe in Peshawar Dist under Samuel's comd (he then having been promoted Col in 1851) successfully completing its mission in one day. The regt returned to England in 1855; Samuel went on to half-pay in 1857, and was granted the rank of Hon Maj-Gen.
He m (1st) in Ireland, 4 Jun 1823, Frances True Bigham; they had issue: Jane iii, Frances Maria, Anne v and Elizabeth Ruth. Frances d in 1843, and Samuel m (2nd) 4 May 1844, Mary Harriet Coombe; they had issue: Brandram Henry Sydenham, and Ethelreda Caroline Annie. Samuel d at Monkstown, Co. Dublin, 23 Dec 1860.