On 17 June 1843, 22 European settlers and four Maori were killed when
an armed party of New Zealand Company settlers clashed with Ngati Toa over the purchase of land in the Wairau valley, near modern-day Blenheim.
The news from Wairau was greeted with shock by settlers throughout the
colony. The killing of men who had surrendered was viewed as
cold-blooded murder. There were fears that these events signalled the
beginning of a widespread Maori insurrection.
Robert FitzRoy, who first visited New Zealand as commander of the Beagle in 1835, was Governor from 1843, succeeding the late William Hobson. He served until 1845, when he was recalled to Britain and replaced by George Grey.