John Chishull was a notable figure in the 13th century, primarily recognized for his roles within the Church and academia. Here are the key positions he held during that time:

1. Bishop of London: John Chishull served as the Bishop of London from 1280 until his death in 1300. His tenure was marked by significant involvement in ecclesiastical and civic matters in London.

2. Chancellor of the University of Oxford: Before becoming bishop, Chishull was also known for his role as Chancellor of the University of Oxford. This position involved overseeing the university's administration and academic affairs, contributing to the development of higher education in England.

3. Involvement in Church Councils: Chishull participated in various church councils and synods, where he played a role in addressing theological and administrative issues within the Church.

These roles highlight Chishull's influence in both religious and educational spheres during the 13th century, reflecting the interconnectedness of church and state during that period. If you need more detailed information about his contributions or specific events during his tenure, feel free to ask!