Born between 995 and 1000, Richeza of Lothringen or Richensa of Lotharingia (Fr. Lorraine) was the wife of King Mieszko II of Poland. She was the daughter of the Count Palatine Ezzo of Lotharingia and Mathilde of Saxony and the granddaughter of emperor Otto II and his wife Theophanu. Her mother, Mathilde of Saxony, was the sister of Otto III, Holy Roman Emperor.