Sir Eynion de Tilston (born c. 1126) was a Norman knight and first lord of the manor of Tilston in the English county of Cheshire.
In the 12th century, William de Malpas gave Eynion the manor of Tilston in Cheshire, near the Welsh border. Sir Eynion was given the Manor of Tilston by the Earl of Chester in return for military service. He and his descendants were constantly alert, because of Welsh raids upon the border areas.
In 1154 he married Beatrix de Gernons, daughter of Ranulf de Gernon, Earl of Chester. They had at least one son born around 1156. The name of his son is unknown (possibly Einion de Tilston born @1156 ref: Geneanet.org).
Beatrix de Gernons was a sister of Hugh of Kevelioc, and a great-granddaughter of Henry I Beauclerc, son of William The Conqueror and Matilda of Flanders. Great-great-great-great-granddaughter of Richard III De Normandie[Grandfather or William the Conqueror]