The following is the entry for William Cornwallis Aldham in William O'Byrnes 1849 'Naval Biographical Dictionary'.
ALDHAM. (Commander, 1844.)William Cornwallis Aldham entered the Navy 4 April, 1822; passed his examination in 1828; and obtained his first commission 10 July, 1832. His subsequent appointments were – 20 Aug. 1834, to the Canopus 84, Capt. Hon. Josceline Perry, in the Mediterranean – 28 Feb. 1836, as Senior, to the Scylla 16, Capt. Hon. Joseph Denman, off Lisbon – 12 July, 1838, in a similar capacity, to the Jaseur 16, Capts. Fred. Moore Boultbee and Wm. Alex. Willis, on the Mediterranean station – and, 7 March, 1842, again as First, to the Winchester 50, flagship at the Cape of Good Hope of the Hon. Josceline Percy. Since his last promotion, which took place 5 April, 1844, Commander Aldham has been unemployed. Agents – Messrs. Stilwell.