William Chevir, or Chevyr (died 1446) was an Irish politician and judge, whose career was marked by accusations of oppression and corruption.
He and his brother were closely associated with James Butler, 4th Earl of Ormonde (1393-1452), the dominant Anglo-Irish magnate in the southeast of Ireland for more than thirty years.
[1] He acquired considerable wealth, and became the owner of Ballyhealy Castle in Wexford, where his family lived until the seventeenth century.
[6] In the same year he conveyed at the King's command the manor of Rathfarnham to James Cornwalsh, the Chief Baron of the Irish Exchequer.
[7] The Privy Council, concerned about the lawless state of Leinster and Munster, appointed Chevir and Edward Somerton, the King's Serjeant, to a commission of oyer and terminer to execute the laws in six southern counties.