Leopold Anton von Firmian
…of Imperial envoy, Baron Franz Wilhelm von Firmian (b. 1636) and his wife, Countess Maria Viktoria von Thun und Hohenstein. His maternal uncle Count Johann Ernst von Thun was Bishop of Seckau from 1679 until 1687 and Prince-Archbishop of Salzburg from 1687 to 1709. Leopold Anton von Firmian was the uncle of Cardinal…