On or before 24 Aug 1453 Thomas Neville (age 23) and Maud Stanhope 4th Baroness Cromwell Baroness Willoughby Eresby were married. Maud Stanhope 4th Baroness Cromwell Baroness Willoughby Eresby was the niece and heiress of Ralph Cromwell 3rd Baron Cromwell (age 50) meaning traditional Percy lands would become Neville lands. The Percy's, being the older family, especially Thomas Percy 1st Baron Egremont (age 30), took umbrage with the ensuing two year feud known as the Neville Percy Feud. He the son of Richard Neville Earl Salisbury (age 53) and Alice Montagu 5th Countess of Salisbury (age 46). He a great x 2 grandson of King Edward III of England.

On 24 Aug 1453 John Neville 1st Marquess Montagu (age 22) was ambushed at Heworth Moor York by Thomas Percy 1st Baron Egremont (age 30) leading a force of 700 or more men when returning with his brother's wedding party from Tattershall Castle [Map] to Sheriff Hutton [Map].