Sir Thomas Stanley, 1st Baron Stanley, titular King of Mann, KG (c. 1405 – 11 or 20 February 1459), of Lathom and Knowsley, Lancashire, was a Privy Councillor, Comptroller of the Royal Household, Lieutenant-Governor of Ireland (1431–36), Chief Steward of the Duchy of Lancaster, Knight of the Shire for Lancashire, Constable & Justice of Chester, Chamberlain of North Wales, Lord Chamberlain (1455), and from 15 January 1456 was summoned by Writ to Parliament as Lord Stanley.[1]