Who was the first woman to rule Hapsburg lands in her own name?

I need help with homework involving Austria and Prussia.

Who was the first woman to rule Hapsburg lands in her own name?
Maria Theresa of Austria?


Habsburg


Ferdinand I 1520-1564


Maximilian II 1564-1576


Rudolf II 1576-1612


Matthias 1612-1619


Ferdinand II 1619-1637


Ferdinand III 1637-1657


Leopold I 1657-1705


Joseph I 1705-1711


Charles VI 1711-1740


Maria Theresa 1740-1780


http://en.wikipedia.org/wiki/Habsburg_Mo...