The two possible locations of its origin are the bishop's seat of Seckau in Styria and Kloster Neustift near Brixen in South Tyrol.
Leopold Anton Freiherr von Firmian or Leopold Anton Eleutherius von Firmian (11 March 1679 – 22 October 1744) was Catholic Bishop of Lavant 1718-1724, Bishop of Seckau 1724-1727 and Prince-Archbishop of Salzburg from 1727 until his death.
Despite the composition of diverse short treatises, chiefly canonical and dogmatic, he did not lose sight of his main purpose, but gathered materials for his history of the Dioceses of Ratisbon, Vienna, Neustadt, Seckau, Gurk, Lavant, and for the secular history of Carinthia.
Roman Sebastian Zängerle (January 20, 1771, Ober-Kirchberg near Ulm – April 17, 1848 at Seckau in Austria) was Prince-Bishop of Seckau.
From 1587 to 1590 he was court painter to Guglielmo Gonzaga's brother-in-law Archduke Charles II of Austria (1564–90), in Seckau and Graz, where he painted the altarpiece Symbolum apostolorum (1588; Graz, Alte Gallery), showing the creation of Eve surrounded by depictions of articles of the Nicene Creed.
On April 24, 1824, he became Prince-Bishop of Seckau and administrator of the diocese of Leoben.