High Quality Content by WIKIPEDIA articles! Alexander de Bicknor (usually Alexander de Bykenore in original Middle English sources, though several other spellings are encountered as well) was an official in the Plantagenet kingdom under Edward I of England, Edward II of England, and Edward III of England. Best known to history as the Archbishop of Dublin from 1317 until his death on July 14, 1349, his career involved extensive diplomatic missions for the King and the holding of numerous civil and ecclesiastical offices in Ireland, including Lord Treasurer of Ireland (1307–1309) and Lord Chancellor of Ireland.