William John Swainson FLS, FRS 1789 - 1855), was an English ornithologist, malacologist, conchologist, entomologist and artist.

In 1839 he became a member of the committee of the New Zealand Company and of the Church of England committee for the appointment of a bishop to New Zealand, bought land in Wellington, and gave up scientific literary work. He married his second wife Anne Grasby (housekeeper) in 1840. He was apparently the first Fellow of the Royal Society to move to New Zealand. He was later made an honorary Fellow of the Royal Society of Tasmania.

Together with most of his children from his first marriage, they sailed for New Zealand aboard the Jane, reaching Wellington, in the summer of 1841. The trip was not without incident, as the boat suffered damage en route and was in such a poor state that there was legal action on arrival. He purchased 1,100 acres in the Hutt Valley from the New Zealand Company, and established his estate of "Hawkshead". Not coincidentally, this name was shared by an ancestral home in Hawkshead, Lancashire of the Swainson family, which was the birthplace of Isaac Swainson. After a few months, this estate was claimed by a Māori chief, Taringakuri, which led to years of uncertainty and threat. He was an officer in a militia against in the Māoris in 1846. During these times he was largely dependent on his half pay.

Source: Wikipedia