Gregorius Thomas Ziegler

He worked to strengthen the Catholic church in Austria, introducing a number of religious orders to his diocese.

After the dissolution of Wiblingen abbey in 1806 he removed with some of his confreres to Tyniec in Poland and taught theology at the neighbouring University of Cracow.

When the Benedictines were forced to leave Tyniec in 1809 he was engaged as professor of church history at the Lyceum of Linz, 1809–15, and of theology at Vienna, 1815-22.

On 2 February 1822, he became bishop of the new diocese of Tyniec, but transferred his see to Tarnów, where he began the erection of a seminary and renovated the cathedral.

Ziegler at once made use of the regained freedom to revive popular missions, which had been discontinued since the reign of Maria Theresa.