The following is the entry for George Grey in William O'Byrnes 1849 'Naval Biographical Dictionary'.
GREY. (Captain, 1834. f-p., 20; h-p., 5.)The Honourable George Grey, born 16 May, 1809, is fourth son of the late Earl Grey; and next brother of Capt. Hon. Fred. Wm. Grey, R.N., C.B.
This officer entered the Navy 17 July, 1822; passed his examination in 1828; and was made Lieutenant, 17 Feb. 1829, into the Windsor Castle 76, Capt. Hon. Duncombe Pleydell Bouverie, attached to the force in the Mediterranean; where, after sharing in a particular service performed by the Alfred 50, Capt. Robt. Maunsell, he was successively invested with the command, 3 Sept. 1831, and 10 Dec. 1833, of the 18-gun sloops Scylla and Scout. Being advanced to the rank he now holds 14 July, 1834, he was next employed, from 12 Aug. 1835 until the autumn of 18.38, and from 28 Aug. 1841 until the spring of 1845, latterly on the Mediterranean station, in the Cleopatra 26, and Belvidere 38. In the former ship he escorted the Countess of Durham and suite to St. Petersburg, then sailed for South America, and ultimately, conveyed the Marquess of Clanricarde as Ambassador to the former Court.
On 29 Sept. 1846, Capt. Grey was appointed Captain of the port of Gibraltar, and, on 16 of the following Oct., officer in charge of the naval stores belonging to the Dockyard at that place. He married, 20 Jan. 1845, Jane Frances, second daughter of Lieut.-General Hon. Sir P. Stuart, Governor of Malta. Agents – Hallett and Robinson.