Mezue ahịrịokwu na-esonụ: Amụrụ nwa nke Reverend Richard Seymour na Frances Seymour (née Smith), Seymour gụrụ akwụkwọ na Radley College na Eastman's Royal Naval Academy, Southsea ma sonye na Royal Navy na Portsmouth na 1852. A họpụtara ya n'ụgbọ mmiri na, ebe ọ bụ na a kwalitere ya na midshipman, e zigara ya n'ụgbọ mmiri ụgbọ mmiri na 1853. O jere ozi na HMS "Terrible" n'Oké Osimiri Ojii n'oge Agha Crimea. A họpụtara ya ka ọ bụrụ onye isi nke abụọ nke nwanne nna ya bụ Sir Michael Seymour, onye isi ndị isi, China Station na 1857 ma sonye na mbibi nke ndị agha agha na June 1857,
Agha nke Canton na Disemba 1857 na Agha nke Taku Forts na Mee 1858 n'oge Agha Opium nke Abụọ.