Flore was the daughter of unknown parents. The date and place of her birth have not been found.
Her husband was Pierre I de Lescure, who she married in 1399 in Rodez. Their five known children were Olivier (c1410->1460), Pierre (c1415-<1465), Béatrix (?-?), Bertrande (?-?) and Hélène (?-?).