Sir William Stafford, of Bramshall, Kt.

This William must have been born in or before 1252, which is the year his father died.

The Genealogist, Volume 31. "SIR WILLIAM STAFFORD, Knight, of Bramshall and Amblecote, co. Stafford. M.P. for Staffordshire five times betwen 1290–1313 and in 1318, at which last date styled 'Knight.' He had issue—"

Collections for a History of Staffordshire, Volume 1. —
"SIR JOHN DE STAFFORD of Bramshall, M.P. Staffs 1339 (I). 1340. Born c. 1302; second son of William de S. junior (who was the eldest son (d. 1320) of Sir William de Stafford of Sandon, Bramshall and Amblecot, M.P.,[1] who lived till 1339/40, by Isabel, daughter and coheiress of Sir Robert de Stafford of Anslow. Sir John married (I) 1325-30, Elizabeth, daughter and coheiress of Sir Philip de Somervill,[2] M.P. (d. 1355), she (born c. 1310) died in giving birth to a daughter Maud, who married in 1355 Edmund Vernon, and later Sir Richard de Stafford, M.P.[3] (2) 1337, Margaret, daughter of Ralph, Lord Stafford, by Katherine (Hastang),[4] when his grandfather, Sir William, settled Amblecot on the marriage. Margaret was a child at this time, and her sons, Humphrey and Ralph, were not born till 1350-5; she was surviving, as Sir John’s widow, in 1373.”
1. Parl. 1290.
2. Parl 1322 (2).
3. Parl. 1341.
4. She was, I believe a daughter of Humphrey Hastang, Archdeacon of Coventry, and whether she was legally married to Lord Stafford or not, I cannot say. The Christian name of Humphrey in the Stafford family comes somehow from this Humphrey Hastang, the dignitary of the Church. (See Harwood: Erdeswich 125.)

The Genealogist, Volumes 17-18 (2003)
Magna Carta Ancestry: A Study in Colonial and Medieval Families, Volume 4, 2nd ed. — "KATHERINE HASTANG (or DE HASTANG),daughter of John de Hastang,Knt.,of Budbrooke, \\ arwickshire, Chebsey, Staffordshire,etc., Steward of the Queen's Household, by his wife, Eve. Ralph and Katherine had two known daughters, Joan (wife of Nicholas de Beke, Knt.) [see SAVAGE 8] and Margaret (wife of John de Stafford, Knt.). His wife, Katherine, was living in 1327. In 1329 William de Stafford, Knt. sued him for a debt of 300 marks;