Eudo was the fourth son of Hubert of Ryes, who is legendarily known as the loyal vassal who hosted Duke William of Normandy prior to his flight from Valognes during a revolt in 1047. Eudo's brothers were Ralph, Robert, Bishop of Séez, Hubert, William, and Adam. A sister, Albreda, was married to Peter de Valognes. There was also a sister, named Muriel, who was married to Osbert. Eudo is known as "dapifer" because of his position as a steward or server which in Latin is "dapifer".
Eudo was present at Rouen for the death of King William, and then accompanied the new king, William II of England to England; securing for him the royal castles at Dover, Pevensey, and Hastings. Eudo was a steward to William II also, and was one of the early adherents, witnessing charters and serving in the royal household. In 1096/7 Eudo founded Colchester Abbey, as well as St Mary Magdalene's Hospital in Colchester. During William II's reign, Eudo witnessed 27 royal writs. The historian Francis West, who studied the office of the justiciarship, asserts that Eudo, along with Haimo and Urse d'Abetot, as well as Ranulf Flambard, could be considered the first English justiciars, a position that the historian Emma Mason has modified towards them being the first barons of the exchequer. By that time Eudo's position was so powerful that he was able to impede efforts by the monks of Westminster Abbey to recover a church in London that had previously belonged to the abbey but had been alienated.
Henry I
Eudo continued as a steward to King Henry I of England, William's younger brother who succeeded as king in 1100. Eudo was one of the witnesses to Henry's coronation charter, issued shortly after his coronation in August 1100. Eudo was also a royal witness to the treaty between Henry and his brother Robert Curthose in 1101. From his service to Henry, Eudo acquired more lands, including the town of Colchester and several manors. Eudo continued to be a frequent witness to the royal charters and writs, along with Urse and Haimo. In 1103, Eudo's son-in-law William de Mandeville had lands confiscated which were then granted to Eudo. The punishment was likely for allowing Ranulf Flambard to escape from the Tower of London in 1101. In addition Henry I removed William de Mandeville as Constable of the Tower of London and appointed Eudo to the position.
Death
Eudo died at Préaux in Normandy early in 1120, and was buried in the chapter-house of St John's Abbey, Colchester, which he had founded, on 28 February 1120. He left gifts to Colchester Abbey, including the manor of Brightlingsea. There is a statue of Eudo on Colchester Town Hall in honour of his service to the town.
