 The estate was previously owned by William Whitmore, inherited via Thomas Whitmore from the daughter of William Acton, who purchased from Sir John Weld.The house was later inherited by George Colebrooke and sold to Abraham Hume.Locals called the estate Arno's, and next owner, Sir William Mayne (later Lord Newhaven), renamed the house and estate Arnos Grove, which is now pronounced as though it never had an apostrophe.