In 1204, when still very young he was presented to a host of churches in the diocese of Lincoln once patronised by Gilbert de Beseby.
[1] He held the office of Keeper of the Coast, the precursor to Lord Warden of the Cinque Ports, from the year 1232, and intermittently up until the outbreak of the Second Barons' War.
[2] His administration included Stephen Segrave (high sheriff of several counties), Henry of Bath (high sheriff of Gloucestershire), Robert Papelew and Brian de Lisle, and achieved a centralisation under his hand of much royal revenue.
[4][unreliable source] He fell dramatically from power in April 1234, consequent on the death of Richard Marshal, 3rd Earl of Pembroke, which was attributed to the machinations of Peter des Roches.
They demanded that Peter take the tonsure, surrender his worldly goods and return to monastic chastity.