by 1204. By 25 June 1206, John was holding the prebend of Langford Ecclesia in the Diocese of Lincoln and it is unclear when he relinquished this position. Sometime between 1210 and 1212 he became Archdeacon of Oxford in the Diocese of Lincoln, perhaps during 1211. His predecessor in office was the chronicler Walter Map. In 1203 the medieval chronicler Thomas of Marlborough, who was a monk of Evesham Abbey, pleaded a case for Evesham before Hubert Walter and later, in his chronicle, he noted that John, Simon of Southwell, and Honorius of Kent, by now all canon lawyers in the archbishop's household, sided with the abbey. He also described the three men as magistri mei in scholis (roughly, "my school teachers"). Surviving evidence shows that Simon and John frequently found themselves on opposing sides of cases, which suggests a rivalry between the two over their expositions of canon law. During the papal interdict on England during King John's reign, John of Tynemouth remained in England. He also served as a papal judge-delegate on several occasions. He died in 1221, between 25 March and August. This date of death is only recorded in a medieval work, the Annals of Dunstable, often felt to be the work of another canonist, Richard de Mores. Writings Some of John's writings, dealing with canon law, still survive. They show him to have been steeped in canon law and quite knowledgeable. In his writings, he often cited earlier canonists or theologians as well as contemporary writers. A number of the glosses on a late-twelfth-century copy of Gratian's Decretum are ascribed to John. These take the form of notes from his lectures that were later added to the margins of copies of the Decretum. This combined work is now at Gonville and Caius College at Cambridge University, catalogued as manuscript (MS) 283/676. Another set of student notes from his lectures, this time entitled Quaestiones, survives as part of British Library MS Royal E.VII. This work includes lectures notes not only from John's classes, but from Simon and Nicholas' as well. He also was addressed as magister, testifying to his learning. Identification Knorr writing in the Oxford Dictionary of National Biography considers that John of Tynemouth (canon lawyer) may be the same person as John of Tynemouth (geometer). Knorr regards this as possible, but unlikely. Citations References Further reading 13th-century English Roman Catholic priests 1221 deaths Archdeacons