DUKE OF ANCASTER AND KESTEVEN  , an English title borne by the well-known Lincolnshire family of Bertie from I715 tO 1809 . ROBERT BERTIE (1660-1723), son and heir of Robert, third earl of Lindsey (d . 1701), who succeeded his father as lord great chamberlain of England, was created marquess of Lindsey in 1706, being made duke of Ancaster and Kesteven in July 1715 . His eldest surviving son, PEREGRINE (1686-1742), who had been a member of parliament for Lincolnshire from 1708 to 1714, succeeded to the dukedom and also to the lord-lieutenancy of Lincolnshire, which had been held by his father . His son and successor, PEREGRINE (1714-1778), who was also lord great chamberlain and lord-lieutenant of Lincolnshire, attained the rank of general in the British army . The fourth duke was ROBERT (1756-1779), son of the third duke, who died in July 1779, when his barony of Willoughby de Eresby and the hereditary office of lord great chamberlain fell into abeyance until 1780 . The dukedom, however, and other honours came to his uncle BROWNLOW (1729-1809), on whose death in February 18o9 the dukedom of Ancaster and Kesteven became extinct; but the earldom of Lindsey descended to a distant kinsman, Albemarle Bertie (1744-1818) . After a second period of abeyance the barony of Willoughby de Eresby was revived in 1871 in favour of Clementina Elizabeth (d . 1888), a descendant of the Berties, who was the widow of Gilbert John Heathcote, 1st Baron Aveland (d . 1867) . Her son and successor, GILBERT HENRY HEATHCOTE-DRUMMOND-WILLOUGHBY (b . 1830), 23rd Baron Willoughby de Eresby, and joint hereditary lord great chamber-lain, was created earl of Ancaster in 1898 .