The son of Henry Knox Wigram, a
barrister, and a grandson of
Octavius Wigram (1794–1878), Governor of the
Royal Exchange Assurance Corporation, Wigram was born in
London and was educated at
Harrow School. His mother was Mary Anne Pomeroy, a daughter of the
5th Viscount Harberton. After working for the
Bank of England and a shipping company, ill-health led him to emigrate to New Zealand, where he arrived in 1883. He returned to England briefly in 1885 in order to marry Agnes Vernon Sullivan. They had no children, and Agnes survived Henry by 23 years, dying in 1957. Together with his brother, William Arthur Wigram, Henry bought a malthouse and brickworks business in the Heathcote Valley between Christchurch and
Lyttelton. They soon took over two other brickworks and pipeworks and founded a nail factory and seed company. His prominence in business led to Wigram being invited to chair the committee for the Canterbury Jubilee celebration in 1900, and he remained heavily involved in public affairs for the next thirty years. ==Mayor of Christchurch==