Richard fitz Eustace
Richard fitz Eustace (died circa 1163) was Constable of Chester and Baron of Halton within the County Palatine of Chester ruled by the Earl of Chester.
He was a son of Eustace fitz John (died 1157), hereditary Constable of Chester, by his second wife Agnes, daughter and eventual heiress of William fitz Nigel (died 1134), of Halton Castle, hereditary Constable of Chester and feudal Baron of Halton. Richard fitz Eustace in turn inherited the barony and constableship. During the reign of King Henry II, Richard held one knight's fee in Smathe, Yorkshire.