 Ramba uchiverenga ndima iyi - Cavendish akaberekerwa muWestminster, mwanakomana wechitatu waGeorge Cavendish, 1st Earl weBurlington naLady Elizabeth Compton, mwanasikana uye mugari wenhaka we7th Earl weNorthampton. Cavendish akadzidza paEton College neTrinity College, Cambridge. Akagadzwa saLieutenant mu10th Dragoons muna 1808 uye akaendeswa kuSpain uye akakuvadzwa muhondo yeCorunnamuna January 1809 mukati meHondo yePeninsular. Muna 1812 akapinda muParamende nokuda kweDerby, chigaro chaakabata kusvikira muna 1834. Muna 1837, akagadzwa Chief Equerry uye Clerk Marshal kuna Mambokadzi Victoria, asi akasiya basa muna 1841. Musi wa2 Chikumi 1853 akagadzwa colonel weThe Queens Bays, chinzvimbo chaakabata kusvika parufu rwake. Akasimudzirwa kuva mukuru mukuru muna 1846, lieutenant general muna 1854 uye mukuru mukuru muna 1862. 