All three of Marie's brothers were dead before 1400, which explains the complexity of the negotiations for her third marriage: she and her elder sister Bonne were to be heirs to John of Berry's titles, which required royal assent.
Ketiga saudara Marie yang meninggal sebelum tahun 1400, menjelaskan kompleksitas negosiasi ketiga pernikahannya: ia dan kakaknya Bonne menjadi ahli waris atas gelar-gelar Jean dari Berry, yang memerlukan persetujuan kerajaan.