The following is the entry for John Seccombe in William O'Byrnes 1849 'Naval Biographical Dictionary'.
SECCOMBE. (Lieutenant, 1842.)John Seccombe entered the Navy 1 May, 1829; passed his examination 29 June, 1835; and after serving on the South American and Cape of Good Hope stations, as Mate, in the Sparrow ketch, Lieut.-Commander John Tyssen, and Grecian 16 Capt. Wm. Smyth, was promoted to the rank of Lieutenant 14 Dec. 1842. His appointments have since been – 27 May, 1843, and 27 Jan. and 24 July 1845, to the Espoir 10, Capt. Geo. Sumner Hand, Growler steam-sloop, Capt. Claude Henry Mason Buckle, and Waterwitch 10, Capt. Thos. Francis Birch, all on the coast of Africa, where he served in the two last as First-Lieutenant, until the close of 1845 – 20 April, 1846, to the Queen 110, flag-ship of Sir John West at Devonport – and 26 July, 1847 as Senior, to the Trincomalee 24, Capt. Rich. Laird Warren, now on the North America and West India station. Agent – Joseph Woodhead.