Baron Ferrers of Groby (or Baron Ferrers deGroby) was a title in the
Peerage of England. It was created by writ on 29 December 1299 when
William Ferrers, 1st Baron Ferrers of Groby was summoned to parliament. He was the son of Sir William de Ferrers, Knt., of Groby, Leicestershire, (d.1287) by his first wife
Anne Durward, 2nd daughter of
Alan Durward and his wife Margery of Scotland, and grandson of
William de Ferrers, 5th Earl of Derby. The first Baron was married to Ellen de Menteith, daughter of
Alexander, Earl of Menteith. In 1475 the eighth baron was created the
Marquess of Dorset, and the barony in effect merged with the marquessate. It was forfeited along with the marquessate when the third marquess was
attainted in 1554.
Elizabeth Ferrers, 6th Baroness Ferrers of Groby (1419–1483)
Edward Grey, 6th Baron Ferrers of Groby (c. 1415–1457) was summoned to parliament in right of his wife from 14 December 1446 to 26 May 1455 (women were not permitted to attend in their own right)
^Cokayne, G. E.; Gibbs, Vicary & Doubleday, H. A., eds. (1926). The Complete Peerage of England, Scotland, Ireland, Great Britain and the United Kingdom, extant, extinct or dormant (Eardley of Spalding to Goojerat). 5 (2nd ed.). London, p.343, note (c)
Douglas Richardson & Kimball G. Everingham, Plantagenet Ancestry: A Study in Colonial and Medieval Families, p. 359