Mechtild of Nassau

Mechtild of Nassau (before 1280 – 19 June 1323) was the youngest child of Adolf of Germany and his wife Imagina of Isenburg-Limburg. Mechtild is also known as Matilda of Nassau. She was Duchess consort of Bavaria, by her marriage to Rudolf I, Duke of Bavaria.

Mechtild's paternal grandparents were Walram II of Nassau and his wife Adelheid of Katzenelnbogen. Her maternal grandparents were Gerlach IV of Isenburg-Limburg and his wife Imagina of Blieskastel.

Mechtild was the youngest of eight children, however only Mechtild and three other siblings lived to adulthood: Gerlach I of Nassau-Wiesbaden, Walram III of Nassau-Wiesbaden and Adelheid, Abbess of Klarenthal Abbey.

Her great-grandmother, Matilda of Guelders, was a daughter of Otto I, Count of Guelders and Richardis of Bavaria. Richardis was daughter of Otto I of Wittelsbach, Duke of Bavaria and his wife Agnes of Loon.

She married in Nuremberg 1 September 1294 Rudolf I, Duke of Bavaria.John I of Isenburg-Limburg helped make the final agreement.

Rudolf succeeded his father in 1294 and supported his father-in-law king Adolf of Nassau-Weilburg against his uncle, the Habsburg Albert of Austria. After Adolf’s death Rudolf joined Albert’s party but the strong dynastic policy of the new king caused a new conflict. Rudolf's mother, Matilda of Habsburg acted as regent for her son Rudolf as well as her other son, the future Louis IV, Holy Roman Emperor. A civil war against Louis due to new disputes on the partition of Bavaria was ended in 1313, when peace was made at Munich.

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