Robert the Strong
In contrast of his father, the exact date or birth place of Robert II is unknown, although historians advocated for the year 972 and the city of Orléans, the capital of the Robertians from the 9th century. The only son of Hugh Capet and Adelaide of Aquitaine, he was named after his heroic ancestor Robert the Strong, who died fighting the Vikings in 866. In addition to him, his parents' marriage produced two other daughters whose parentage is confirmed by contemporary sources without any doubt: Hedwig (wife of Reginar IV, Count of Hainaut) and Gisela (wife of Hugh I, Count of Ponthieu).