[4] In 1203, Thomas of Marlborough, who was a monk of Evesham Abbey, pleaded a case for Evesham before Archbishop Walter, and later, in his chronicle, he noted that Simon, John of Tynemouth, and Honorius, all canon lawyers from the archbishop's household, sided with the abbey.
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.
[9] Like John of Tynemouth, a number of the glosses on a late-twelfth-century copy of Gratian's Decretum are ascribed to Simon.
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.