He had a notable uncle also called John Carpenter, town clerk of London.
According to Douglas-Smith, Carpenter was Warden of St. Anthony's Hospital, London and Rector of St. Mary Magdalen.
[3] A Master John Carpenter, then King's clerk, is referred to in Patent Rolls of 17 March 1433 and 9 July 1435, the first being a grant for life of the wardenship.
[8] Carpenter added a chancel, and a chapel dedicated to St Oswald, to the fabric.
This was incorporated in 1853 into a new canopied memorial of Purbeck marble,[10] marked on top with a bishop's crozier.
Over the porch entrance doorway is a statue of Bishop Carpenter, of unknown date.