Question: Who is the mother of Jeanne Of Bar, Countess Of Marle And Soissons?
Sentence (from "Jeanne of Bar, Countess of Marle and Soissons"): She was the only child of Robert of Bar, Count of Marle and Soissons, Sire d'Oisy, who was killed at the Battle of Agincourt when she was a baby, leaving her the sole heiress to his titles and estates.
Relevant evidence: Yes