More may be added to the earlier biography.
Although no conclusive evidence of Hipperon’s origins has been discovered, it is possible that he was related to a family from western Yorkshire that took its name from the hamlet of Hipperholme in Calderdale.
There is rather more evidence for Hipperon’s activities as an attorney in the courts of common pleas and King’s bench for plaintiffs from Surrey and Sussex in the 1420s and early 1430s. In 1420 he acted as an attorney for the London grocer Thomas Knolles†.
