John was a son of Hugh de Baiocis, a Lincolnshire baron, by Alienora his wife.
In 1218 he paid a relief of £100 and took possession of the family estates in Lincolnshire, and in the same year was judge itinerant for the counties of Cornwall, Devon, Somerset, and Dorset, along with "J. Bathon.
Episc.." The next year, an inquisition was held before the chief justice as to whether an appeal by Robert de Tillebroc against him, his mother, brother, and three others, was malicious.
In 1234 he was charged with the homicide of Roger de Mubray, but on payment of 400 marks obtained leave to compound with the widow.
He died in 1249, leaving no male child, and his brother Stephen succeeded to his estates as heir.