A Naval Biographical Dictionary/Gennys, John Henn
GENNYS. (Commander, 1845.)
John Henn Gennys entered the Navy (from the Royal Naval College), in 1824, as a Volunteer, on board the Cambrian 48, Capt. Gawen Wm. Hamilton, under whom, after participating, as Midshipman, in the battle of Navarin, as also in the capture of numerous pirates, he was wrecked, during an attack on a nest of those marauders at Carabusa, 31 Jan. 1828. He then joined the Pylades 18, Capt. Pat. Duff Henry Hay; and, from 1829 until his first promotion, 19 Feb. 1838, served, as Mate, on the Mediterranean, North America, West India, and Lisbon stations, of the Favourite 18, Capt. Joseph Harrison, Winchester 52, flag-ship of Sir Edw. Griffith Colpoys, North Star 28, Capts. Hon. Geo. Rolle Walpole Trefusis and Lord Wm. Paget, Donegal 78, Capt. Arthur Fanshawe, Royalist 10, Lieut.-Commander Chas, Anstruther Barlow, and Vanguard 80, Capts. Hon. Duncombe Pleydell Bouverie and Sir Thos. Fellowes. During his servitude in the North Star, in 1832, he appears to have been employed on shore with a detachment of men for the protection of Montego Bay, at the period of the rebellion in Jamaica; and, when in the Royalist, in 1835, he took part in the operations against the Carlists on the North Coast of Spain. In the course of 1838, Mr. Gennys assumed command, in the Mediterranean, of the Confiance steamer, and he next became successively attached to the Princess Caroline 104, flag-ship of Sir Robt. Stopford, and Rodney 92, Capt. Hyde Parker. In 1840-1 he served at Plymouth, on board the Belleisle 72, Capt. John Toup Nicolas; and, on 19 Jan. 1844, he was appointed to the Camperdown 104, as Flag-Lieutenant at the Nore to Vice-Admiral Sir John Chambers White. Since his attainment of his present rank, 17 ApriL 1845, Connnander Genpys has been on half-pay.