Bishop Adam, wary, unscrupulous, but at the same time vigorous and of unusual ability, played a great part in politics to the end of the wretched King's life. Some historians still believe that he recommended the murder; he certainly supported the deposition in Parliament, and went to Kenilworth as one of the commissioners to force the King's resignation. If thus interested in secular politics, he was no less watchful and vigilant in the affairs of his bishopric and the cathedral.5
”
In 1327 he briefly held the office of Lord High Treasurer, from January through March.6
In Christopher Marlowe's play Edward II, Orleton is given a role in Edward's death. This traditional story is not given credence by contemporary historians.
Fryde, E. B.; Greenway, D. E.; Porter, S.; Roy, I. (1996). Handbook of British Chronology (Third Edition, revised ed.). Cambridge: Cambridge University Press. ISBN 0-521-56350-X.
Weir, AlisonIsabella: She-Wolf of France, Queen of England 2005