Henry de Grey

Sir Henry de Grey of Grays Thurrock, Essex (1155–1219), was a favourite courtier of King John of England.

Sir Henry was the son of John de Grey (born Thurrock, Essex, c. 1140 and married c. 1157) and probably a great-grandson of Anchetil de Greye (b. circa 1100) of Rotherfield Greys, a grandson of Domesday baron Anchetil de Greye (c. 1052 – 1086+). Sir Henry was the progenitor of the considerable number of noble houses bearing the name Grey or Gray; Sir Henry's descendants in the direct male line went on to be ennobled with no less than eighteen peerages, including eleven substantive baronies, a viscountcy, four earldoms (Kent, Tankerville, Stamford and Grey), a marquessate and two dukedoms. Sir Henry's descendants through the female line are countless but include the Barons Audley, Barons Revelstoke, Barons Northbrook, Barons Howick, Barons Dacre, Barons Willoughby de Eresby, Earl of Lindsey, the Earls of Malmesbury, Earls of Westmoreland, Earls of Essex, Earls of Durham, Earls of Cromer, Earls of Elgin, Earls of Bridgewater, the Earls of Ashburnham, the Marquesses of Lindsey and the Dukes of Somerset and Ancaster, amongst many others.