[1] After her mother's death her father married Sophie of Thuringia; from this marriage she gained two half-siblings, including Henry I of Hesse.

[2] It was later determined that Louis had not proven his case, and in fact had not presented any valid evidence of adultery; as penance, he founded the Cistercian friary Fürstenfeld Abbey (Fürstenfeldbruck) near Munich.

Maria's confessor, allegedly in league with the bishop, persuaded her to write her husband requesting he end the siege and return home.

[3] Over time a great many tales of folklore sprang up around Louis' deed, most of them written long after his death: Ballad-mongers embellished the tale into a murderous frenzy during which Louis allegedly not only killed his wife after having ridden home for five days and nights, but also stabbed the messenger who brought him the wrong letter; then upon entering his castle, stabbed his own castellan and a court lady and threw his wife's maid from the battlements, before he massacred his wife either by stabbing her or cutting off her head.

More restrained chronicles support the account of Marie's execution on 18 January 1256 at Mangoldstein Castle in Donauwörth by ducal decree for alleged adultery, but nothing beyond that.