 Soon after the marriage, however, Basil took a mistress, also named Irene, and in 1339 divorced Irene Palaiologina with the connivance of the local clergy.Irene Palaiologina's cause was backed by Patriarch John XIV of Constantinople and she probably still retained some position of influence in Trebizond.On April 6, 1340, she probably poisoned Basil and seized the throne for herself by what reads in the account of Nicephorus Gregoras as a palace coup.