From the longer Wikipedia page [1]
Sir Geoffrey Boleyn (1406–1463) (also Jeffray Bulleyn, Bullen, etc.) was a City of London merchant who became Lord Mayor of London for 1457–1458. He purchased the manor of Blickling, near Aylsham, in Norfolk from Sir John Fastolf in 1452, and Hever Castle in Kent in 1462.[1] He was the great-grandfather of Queen Anne Boleyn, the mother of Queen Elizabeth I. Sir Geoffrey built the domestic, mercantile and civic fortunes of the Boleyn family, and raised its status from the provincial gentry, as his brother Thomas Boleyn made a career of distinction in church and university, together building the family's wealth, influence and reputation.