Sir John Deiville was a fourteenth-century member of the Deyville family associated with Adlingfleet and other Yorkshire and Nottinghamshire estates. The Complete Peerage records that he died in 1325-1326 and that his son and heir was Sir Robert Deiville of Adlingfleet.

The 1301 inquisition uses the form John de Evyle. The identification of that record with the Sir John Deiville who died in 1325-1326 is plausible but not independently proved by the cited inquisition alone.

Research sources:
- William Brown, editor, Yorkshire Inquisitions of the Reigns of Henry III and Edward I, Yorkshire Archaeological Society Record Series, vol. 31, 1902, pp. 158-159; George Edward Cokayne, The Complete Peerage, 2nd edition, vol. 4, entry for Deiville, p. 133. — https://upload.wikimedia.org/wikipedia/commons/6/60/YAS_Record_Series_Vol._031-_Yorkshire_inquisitions_pt_iii_1245%2C_1282_and_1294-1303%2C_ed_William_Brown%2C_1902_%28IA_cu31924084250608%29.pdf