Peregrine Bertie, 2nd Duke of Ancaster and Kesteven

Peregrine Bertie, 2nd Duke of Ancaster and Kesteven PC (29 April 1686 – 1 January 1742), styled The Honourable Peregrine Bertie between 1686 and 1704, Lord Willoughby de Eresby between 1704 and 1715 and Marquess of Lindsey between 1715 and 1723, was a British politician who sat in the House of Commons from 1708 until 1715 when he was called to the House of Lords.

[1] At the 1708 British general election Lord Willoughby was returned as a Member of Parliament for Lincolnshire with his father's support.

He sat on drafting committees for bills to build a waterworks near Boston and to help drain the Ancholme Level.

He did not stand at the 1715 general election but was summoned to the House of Lords by a writ of acceleration in his father's Barony of Willoughby de Eresby on 16 March 1715.

He also inherited the Lincolnshire seats at Grimsthorpe Castle and Eresby, and the London mansion, Lindsey House, at 59-60 Lincoln's Inn Fields.