William Drogo Montagu, 7th Duke of Manchester KP (15[1] October 1823 – 22[2] March 1890), known as Lord Kimbolton from 1823 to 1843[3] and as Viscount Mandeville from 1843 to 1855, was a British peer and Conservative Member of Parliament.

It was Edward Gibbon Wakefield's unfulfilled hope that Lord Mandeville would emigrate to New Zealand and be the aristocratic leader in the colony.

However, Lord Mandeville and his grandmother, Lady Olivia Bernard-Sparrow, did buy 500 acres (200 ha) of land between them in Riccarton.

[citation needed] When Sarah was eight months pregnant, the Montagu family had her married off to Samuel Palmer on 4 March, 1850.

[citation needed] William was married to Countess Luise Friederike Auguste von Alten in Hanover on 22 July 1852.