Short answers, pulled from the story.
William Boleyn (1451-1505) was an English landowner who held estates at Blickling Hall in Norfolk and Hever Castle in Kent. He is historically significant as the grandfather of Queen Anne Boleyn, the second wife of King Henry VIII.
William Boleyn's father was Sir Geoffrey Boleyn (1406-1463), a member of the Worshipful Company of Mercers who served as Lord Mayor of London in 1457-58. His mother was Anne Hoo (c.1424-1484), the eldest child of Thomas Hoo, Baron Hoo and Hastings.
Before November 1469, William Boleyn married Margaret Butler, the second daughter and co-heiress of Thomas Butler, 7th Earl of Ormond. As part of her marriage settlement, she brought the manor of Aylesbury in Buckinghamshire to her husband.
William Boleyn served as Sheriff of Kent in 1489 and Sheriff of Norfolk and Suffolk in 1500. In August 1483 John Howard, 1st Duke of Norfolk, appointed him deputy for all the coasts of Norfolk and Suffolk for life, and King Henry VII later charged him with responsibility for England's coastal warning beacons.
William Boleyn was buried in Norwich Cathedral, as he requested in his will proved in 1505, beside the grave of his mother Ann Hoo. His ledger stone, still there when the antiquary Blomefield examined it in 1743, bore a Latin inscription identifying him as William Boleyn, Knight, who died on the 10th of October 1505.
In 1491 Thomas Butler, 7th Earl of Ormond, received a royal licence to develop his manor of New Hall at Boreham and Little Waltham in Essex. Through William Boleyn's wife Margaret Butler, the property passed to the Boleyn family, and William's son Thomas Boleyn sold it to King Henry VIII in 1516, who rebuilt it as the Palace of Beaulieu.