No contemporary source states which of Brankovi*'s five children were also Irene's, although the youngest, Catherine, bore the name of Kantakouzenos, and Mara was ``clearly'' the daughter of one of Brankovi*'s earlier wives. Based on portraits of Irene with *ura* Brankovi* and his five children from a chrysobull preserved at the monastery of Esphigmenou on Mount Athos, dated 11 September 1429, Nicol interprets how the individuals were grouped that Stefan and Lazar were _her_ children too. <sep>, Pronoun: her