[1] Mary was the great-granddaughter of Sir William Moleyns, slain at the siege of Orleans on 8 May 1429, who married, on 1 May 1423, as his second wife, Anne Whalesborough (died c. 1487), the daughter and co-heir of John Whalesborough, esquire, of Whalesborough, Cornwall, by Joan, daughter of Sir John Raleigh.
By Anne Whalesborough Sir William Moleyns had two daughters, Eleanor (died c. 1492) and Frideswide.
Eleanor's marriage was granted to Thomas Chaucer, esquire, and before 5 November 1440 she married Robert Hungerford, 3rd Baron Hungerford, who was beheaded at Newcastle on 17 May 1464 after the Battle of Hexham.
He was attainted, as was his son, Sir Thomas Hungerford (executed 1469), whereby all their honours became forfeited.
Edward Hastings and Mary Hungerford had two sons and a daughter:[3] Mary married, secondly, on 1 May 1509, Sir Richard Sacheverell (d. 14 April 1534), second son of Ralph Sacheverell of Morley, Derbyshire, by whom she had no issue.