Lord Willoughby de Eresby

Barony of Willoughby de Eresby
Quarterly, 1st and 4th, or fretty azure (for Willoughby); 2nd, or three bars wavy gules (for Drummond); 3rd, ermine three pomeis, each charged with a cross or (for Heathcote)
Creation date	26 July 1313
Monarch	Edward II
Peerage	Peerage of England
First holder	Robert de Willoughby, 1st Baron Willoughby de Eresby
Present holder	Jane Heathcote-Drummond-Willoughby, 28th Baroness Willoughby de Eresby
Heir apparent	Sebastian St Maur Miller (co-heir) Sir John Aird, 4th Baronet (co-heir)
Armorial motto	Loyauté me oblige ("Loyalty binds me")

Baron Willoughby de Eresby /ˈwɪləbi ˈdɪərzbi/ is a title in the Peerage of England. It was created in 1313 for Robert de Willoughby. Since 1983, the title has been held by Jane Heathcote-Drummond-Willoughby, 28th Baroness Willoughby de Eresby.

The title of Baron Willoughby was created by writ in 1313 for Robert de Willoughby, lord of the manor of Eresby in the parish of Spilsby, Lincolnshire. He was the son of Sir William de Willoughby and Alice, daughter of John Beke, 1st Baron Beke of Eresby. The writ was addressed to "Roberto de Wylghby," and the suffix of de Eresby was added to the title between 1350-1360 to distinguish it from other members of the de Willoughby family.

The fourteenth Baron was created Earl of Lindsey in 1626. His great-grandson, the fourth Earl and seventeenth Baron, was created Marquess of Lindsey in 1706 and Duke of Ancaster and Kesteven in 1715. On the death of the first Duke's great-grandson, the fourth Duke, the Dukedom, Marquessate and Earldom were inherited by his uncle, while the Barony of Willoughby de Eresby fell into abeyance between the late Duke's sisters Lady Priscilla and Lady Georgiana. In 1780, the title was called out of abeyance in favour of Priscilla. She was the wife of Peter Burrell, 1st Baron Gwydyr. Their son Peter inherited both Baronies. On the death of Peter's only son Albyric, the Barony of Gwydyr was passed on to a cousin, while the Barony of Willoughby de Eresby fell into abeyance between his sisters Clementina Drummond-Willoughby, wife of Gilbert John Heathcote, 1st Baron Aveland and Charlotte, wife of Robert Carrington, 2nd Baron Carrington. In 1871 the abeyance was terminated in favour of Clementina. She was succeeded by her and Lord Aveland's son Gilbert, 2nd Baron Aveland and 25th Baron Willoughby de Eresby. In 1892 he was created Earl of Ancaster, a revival of the Ancaster title created for his maternal ancestor in 1715. On the death of his grandson, the third Earl, in 1983, the Earldom and Barony of Aveland became extinct (while the Baronetcy also held by the Earl was passed on to a distant relative), while the Barony of Willoughby de Eresby was inherited by the late Earl's daughter, Nancy, the present holder of the title.