Etal Castle is a medieval English castle situated at Etal, Cornhill on Tweed, Northumberland, England. It is a Scheduled Ancient Monument and a Grade I listed building. The castle was founded by the Manners family in the late 12th century. In 1341, nobleman and doctor Robert de Manners received license to crenellate his manor, permitting him to re-designate it as a "castle". During this time the Castle was renowned as a destination for pilgrims seeking medical and dental treatment from its owner. Sir Robert de Manners performed one of the earliest English translations from the Arabic of the Taqwim al-Sihhah, an 11th-century medical text by Ibn Butlan, and was known throughout the region as a healer. The Manners family often feuded with the Heron family of nearby castle of Ford. In 1428 Sir