The following is the entry for William Charles Chamberlain in William O'Byrnes 1849 'Naval Biographical Dictionary'.
CHAMBERLAIN. (Commander, 1844.)William Charles Chamberlain, born 21 April, 1818, is eldest son of the late Sir Henry Chamberlain, Bart., H.M. Chargé d’Affaires and Consul General at Rio de Janeiro, by his second wife, Anne Eugenia, daughter of Wm. Morgan, Esq., of London; half-brother of the present Sir Henry Chamberlain, Bart., an officer in the Royal Artillery; and brother-in-law of Capt. Hon. Chas. Orlando Bridgeman, R.N.
This officer passed his examination in 1837; and obtained his first commission 4 Nov. 1840, as a reward for his services on the coast of Syria, including the capture of St. Jean d’Acre. His subsequent appointments appear to have been – 15 Dec. 1840, to the Stromboli steam-vessel, Capt. Woodford John Williams, in the Mediterranean – 18 Jan. 1842, to the Impregnable 104, Capt. Thos. Forrest, on the same station – 16 March, 1843, to the Howe 120, also commanded by Capt. Forrest, with whom he returned to England – and, 22 Sept 1843, and 30 Jan. 1844, to the Hyacinth 18, Capt. Fras. Scott, and Albion 90, Capt. Nich. Lockyer, both engaged on particular service. Since his attainment of his present rank, 22 Oct. 1844, Commander Chamberlain has been on half-pay.
He married, 19 June, 1845, Eliza Jane, eldest daughter of the late Capt. Basil Hall, R.N.