On 9 June 1312 the Earl of Pembroke was escorting Piers Gaveston south after Gaveston's surrender to a group of rebellious earls at Scarborough Castle.
In 1794 he was granted a British peerage as Baron Mulgrave, entering the House of Lords, and in 1796 he was made Governor of Scarborough Castle.
After his return to England he was sent to Scotland to design works for strengthening Stirling, and he also reported on the defences of fortifications across England: Carlisle Castle, The Castle, Newcastle, Tynemouth Castle, Scarborough Castle, Chester Castle, Yarmouth Castle, and Landguard Fort.
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By 1255 he was serving as chief justice of the forests north of the Trent, and warden of Bamburgh, Pickering, and Scarborough castles.
Ralph Eure defended Scarborough Castle against the Pilgrimage of Grace for 20 days in 1536 with a garrison comprising only his household servants.