Matilda of Habsburg
Matilda of Habsburg (1253–1304) was the eldest daughter of King Rudolf I of Germany. In 1273 at Aachen she became the third wife of Louis II the Strict, Duke of Upper Bavaria; the marriage linked the rising Habsburgs with the Wittelsbach dynasty.
Her children included Rudolf I of Bavaria and the future Emperor Louis IV. After Louis II died in 1294, she ruled Upper Bavaria as regent for her young son until 1301, and died at Munich in 1304.