Anna Dalassēnē

 Anna Dalassēnē (1025-1092) was a Roman noblewoman who was the mother of two Emperors: Alexios I and Isaac II. She strongly favoured her youngest son Alexios, and dominated his Government between 1078 and 1092. All evidence suggests that Anna nursed a deep seated hatred of her middle son, Isaac, and did her best to exclude him from power. In 1092, Isaac marched on Constantinople with an Italian army, seized his mother and threw her into a desolate monastery, where she quickly died.