The Delaval family is an aristocratic family in Northumberland, England, from the 11th century to the 19th century. Their main estate was the manor of Seaton Delaval. The 18th century Delavals are not

John Hussey Delaval, 1st Baron Delaval, known as Sir John Delaval, Bt, between 1761 and 1783, was an English landowner and politician.