Keywords: 4thDukeOfAncaster.jpg w Robert Bertie 4th Duke of Ancaster and Kesteven 1756-1779 century 18 Contemporary portrait painting unknown http //home golden net/~marg/bansite/friends/images/s_sb_robert jpg 4th Duke of Ancaster png other versions <gallery>4thDukeOfAncaster jpg Original jpg</gallery> PD-old-100 18th-century unidentified painters from Great Britain 18th-century portrait paintings location missing 1780c Dukes in the Peerage of Great Britain 18th-century portrait paintings not categorised by year Male 1756 births 1799 deaths 18th-century men of Great Britain 1780c 18th-century oval portrait miniatures of men at bust length 1780c People of Lincolnshire Queues hair fashion Three-quarter view portrait paintings of men facing right Bertie family |