A Naval Biographical Dictionary/Seymour, John Crossley
SEYMOUR. (Lieut., 181-3. f-p., 10; hp., 31)
John Crossley Seymour was born 18 Jan. 1793. He is brother of Lieut. Matthew Cassan Seymour, R.N.; nephew of Capt. Stephen Seymour, R.N., who commanded the Arab 16 when that vessel was lost on the Penmarcks, near Brest, 10 June, 1796; and cousin of Capt. Michael Seymour, R.N.
This officer entered the Navy, 20 June, 1806, as Fst.-cl. Vol., on board the Amethyst of 42 guns and 261 men, commanded by his cousin, the late Sir Michael Seymour, under whom, while cruizing off L’Orient, he assisted as Midshipman at the capture, 11 Nov. 1808, of the French frigate La Thétis of 44 guns and 436 men, including troops, which was boarded and carried at the close of a furious contest of more than three hours, in which the British lost 19 men killed and 51 wounded, and the enemy 135 killed and 102 wounded. He also, 6 April, 1809, took part in a severe intermittent action of about four hours, which terminated in the capture, with a loss to the Amethyst of 8 men killed and 37 wounded, of another of the enemy’s frigates, Le Niemen of 46 guns and 339 men, of whom 47 were slain and 73 wounded. After attending the expedition to Flushing, Mr. Seymour, in Oct. 1809, followed his relative into the Niemen, which had been added to the British navy as a 38-gun frigate and in May, 1812, he accompanied him in the capacity of Master’s Mate into the Hannibal 74. In the spring of 1813 he sailed in the Indefatigable 44, Capt. John Fyffe, for South America, where he joined the Montagu 74, flag-ship of Rear-Admiral Manley Dixon, and Nereus 42, Capt. Manley Hall Dixon, and was made Lieutenant, 16 July in the same year, into the Satellite 16, Capts. John Porteous, Fras, Chas. Annesley, Gordon, Thos. Saville Griffinhoofe, and Chas. Sam. White. He served in that vessel, latterly on the West India station, until Aug. 1815, and has since been on half-pay.
He married, 11 May, 1818, Miss Frances Maria Seymour, and has by her two sons and one daughter.