The following is the entry for Thomas Owen Knox in William O'Byrnes 1849 'Naval Biographical Dictionary'.
KNOX. (Captain, 1842.)Thomas Owen Knox entered the Navy 14 Feb. 1816; and was made Lieutenant, 24 April, 1824, into the Spartiate 76, flag-ship of Sir Geo. Eyre in South America. His next appointments were – 5 June, 1824, to the Éclair 18, Capt. Thos. Bourchier, on the same station – 7 July, 1828, to the Pyramus 42, Capt. Geo. Rose Sartorius – 30 Aug. 1828, to the Pallas 42, Capts. Adolphus FitzClarence and Manley Hall Dixon, under the former of whom we find him accompanying Lord Dalhiousie and the Bishop of Calcutta from Portsmouth to Bengal, General Viscount Combermere from India home, and Col. Fox from Halifax – and 10 Aug. 1831, as First, to the Magicienne 24, Capt. Jas. Hanway Plumridge, on the East India station, whence he returned to England and was paid off in March, 1835. Attaining the rank of Lieutenant 15 Feb. following, he was successively nominated, 29 March, 1836, and 13 May, 1840, Second-Captain of the Minden 72 and Rodney 92, Capts. Alex. Renton Sharpe and Robt. Maunsell, both on the Mediterranean station. He has been on half-pay since the receipt of his Post-commission, which bears date 14 June, 1842. Agents – Messrs. Stilwell.