The following is the entry for Edward Knatchbull Hughes Hallett in William O'Byrnes 1849 'Naval Biographical Dictionary'.
HALLETT. (Commander, 1841. f-p., 17; h-p., 9.)Edward Knatchbull Hughes Hallett was born 20 May, 1808.
This officer entered the Royal Naval College 1 Feb. 1821; and embarked in Feb. 1823, as Midshipman, on board the Tribune 42, Capt. Gardiner Henry Guion, employed in the Mediterranean. In 1827, after having served for some time in the East Indies in the Java 52, and Boadicea 46, both commanded by Capt. John Wilson, he passed his examination; and between that period and the receipt of his first Admiralty commission, bearing date 16 Oct. 1830, he discharged the duties of Mate and Acting-Lieutenant, on the North America and West India station, in the Hussar 46, and Winchester 52, flag-ships of Sir Chas. Ogle and Sir Edw. Griffith Colpoys, and Sparrowhawk 18, Capt. Thos. Gill. Mr. Hallett, who next, from 19 Dec. 1831, until paid off 28 July, 1834, served off Lisbon in the Asia 84, bearing the flag of Rear-Admiral Wm. Parker – was lastly, on 14 April, 1836, appointed to the Bellerophon 80, Capts. Samuel Jackson and Chas. John Austen. Returning in the latter ship to the Mediterranean, he ultimately, in 1840, commanded her boats in the attacks on Gebail and Sidon; and he also fought at the siege of Acre. Having paid the Bellerophon off, as her First-Lieutenant, in Juno, 1841, he was promoted, on 23 of the following Nov., to the rank he now holds. He has not since been afloat. Agents – Hallett and Robinson.