The Barony of Latimer

As for the relationship to John Willoughby "7th Baron Latimer" to the Lords Willoughby of Eresby.. the 7th Baron Latimer was the grandson of the 4th Baron Willoughby of Eresby through the 4th Baron's son Sir Thomas Willoughby from his previous wife. Thomas Willoughby's brother became William Willoughby, 5th Baron Willoughby of Eresby. The 7th Baron married Elizabeth Neville, daughter of John Neville, 3rd Baron Neville de Raby (father of Ralph de Neville, 1st Earl of Westmorland by his first wife Maud Percy) and his second wife - Elizabeth Latimer, suo jure Baroness Latimer, daughter of William Latimer, 4th Baron Latimer of Corby. John Neville, 3rd Baron Neville and Elizabeth Latimer's son was the '6th Baron Latimer'. The barony was then passed to their daughter Elizabeth Neville, Baroness Latimer. Elizabeth Latimer married secondly the 7th Baron Latimer's grandfather, Sir Robert, 4th Baron Willoughby of Eresby and had a daughter, Margery, who had no issue. Therefore the Barony passed de jure to Sir John Willoughby, 8th Baron Latimer.

It is through the Earl of Westmorland that the 'new' creation of Baron Latimer was created for his son, George Neville, by his second wife, Lady Joan Beaufort, Countess of Westmorland. George Neville was created 1st Lord Latimer [England] on 25 February 1431/32. Perhaps because she was the legitimized daughter of a Prince and granddaughter of a King because now that I look at it the heir to Elizabeth Latimer was/should have been her daughter Elizabeth Neville and family after Lady Latimer's son Sir John, the 6th Baron died. Genealogy is tough with the aristocracy and royalty as they were always intermarrying so things must have gotten mixed up.

Sources:

• Plantagenet ancestry: a study in colonial and medieval families by Douglas Richardson, Kimball G. Everingham
• Magna Carta ancestry: a study in colonial and medieval families by Douglas Richardson, Kimball G. Everingham
• Charles Mosley, editor, Burke's Peerage and Baronetage, 106th edition, 2 volumes (Crans, Switzerland: Burke's Peerage (Genealogical Books) Ltd, 1999), volume 1, page 14.
• G.E. Cokayne; with Vicary Gibbs, H.A. Doubleday, Geoffrey H. White, Duncan Warrand and Lord Howard de Walden, editors, The Complete Peerage of England, Scotland, Ireland, Great Britain and the United Kingdom, Extant, Extinct or Dormant, new ed., 13 volumes in 14 (1910-1959; reprint in 6 volumes, Gloucester, U.K.: Alan Sutton Publishing, 2000), volume XII/2, page 660.