He was born as Antun Bauer in
Breznica, Croatia, hailing from a family of
Burgenland Germans. He studied in
Zagreb,
Budapest, and
Vienna, where he received his PhD in philosophy and theology in 1883. He was ordained on 27 July 1879. After returning from his studies, for a time was a chaplain in Zagreb, Ivanec and Samobor, and afterwards he worked for a few years in Zagreb as a catechist in the male teachers' training college and high school. In 1887 he was transferred to the Faculty of Theology, where he worked at first as a lecturer, then as an associate, and since 1904 as a full professor of philosophy and basic theology. In 1905–1906 and 1906–1907 he served as the Dean of the Theological Faculty, and in the period 1906–1907 as the Rector of the
University of Zagreb. Since 1896 was an associate, and since in 1899 full member of the
Yugoslav Academy of Sciences and Arts (from 1915 to his death also a sponsor). In 1911 he was appointed coadjutor to Archbishop
Juraj Posilović. On 26 April 1914 he took the management of the
Zagreb Archdiocese. He was an editor (1886–1890) and a longtime collaborator of and many other Catholic newsletters. In the period of 1885–1911 he was elected as a representative for five times, which enabled him to actively participate in the work of the
Croatian Parliament. At first he was a member of the Party of Rights (), and afterward as a representative of , i.e. ("United Opposition"), and finally as a representative of the
Croatian Party of Rights, whence he approached the
Croatian-Serbian Coalition. As an archbishop, Bauer mainly dealt with church affairs. At his instigation and under his presidency the
Croatian Bishops' Conference was established in 1918. In 1925 he organized the first synod of the Archdiocese of Zagreb (after 1690). In 1922 he participated in the work of the commission for the preparation of the concordat. He is also credited for turning the
Institute of St. Jerome into a national institution. Together with Đokovo bishop
Antun Akšamović he built a seminary and high school in Zagreb. He also helped the reestablishment of
Caritas in Croatia. In the period up to 1914 Bauer had established himself as a prolific philosophical writer. In his philosophical and theological works he advocated the
Neo-Thomist interpretation of metaphysics. He died in Zagreb. ==Works==