Mentin was Duke of Glenpoint in 3E 121. During the War of the Red Diamond he was bought by Potema. In the late autumn, early winter of 3E 121 Empress Kintyra II led her troops to aid Mentin against Potema, who's army was sighted in the area. However upon the arrival of the Imperial Army Potema's location was unknown. During the same night Kintura's force was silently assassinated and Empress herself was captured. This led to downfall and eventually death of Kintyra II. Uriel Septim III, Potema's son, took the Imperial throne afterwards.