ライハウス陰謀事件
His younger brother Algernon Sydney fought for Parliament in the First English Civil War, denounced Oliver Cromwell as a tyrant, and was executed for treason in 1683 for alleged involvement in the Rye House Plot. Henry Sydney (1641-1704) was a signatory of the 1688 Invitation to William, inviting him to remove James II of England from the throne.