Whakaotihia te rerenga e whai ake nei: I whanau a Seymour i te tama a Reverend Richard Seymour me Frances Seymour (née Smith), i whakaakona a Seymour i te Radley College me te Eastman's Royal Naval Academy, Southsea ka uru atu ki te Royal Navy i Portsmouth i te tau 1852. I tohua ia ki te kaipuke, a, i te mea kua whakatairangahia ia ki te kaipuke, ka whakawhiti ki te kaipuke kaipuke i te tau 1853. I mahi ia i runga i te HMS "Terrible" i te Moana Pango puta noa i te Pakanga Crimean. I tohua ia ki te taumata tuarua, ko te kaipuke matua o tana matua keke a Sir Michael Seymour, Kaihautū-i-te-Runga, te Tauranga Haina i te tau 1857 ka whai wāhi ki te whakangaromanga o nga kaipuke pakanga i te marama o Hune 1857, te
Ko te Pakanga o Canton i Tihema 1857 me te Pakanga o Taku Forts i Mei 1858 i te Pakanga Tuarua Opium.