Career
Buchberger was ordained as a Priest on 29 June 1900. In November 1923 Pope Piux XI promoted him to the rank of "Bishop" in the diocese Munich-Freising. On 24 January 1924 he was ordained as a Bishop by Cardinal Faulhaber.
From 12 March 1928 until his death he was the Bishop of Regensburg.
He was an expert in Church history and did work as an editor for several encyclopidic books on this subject in which he also wrote articles himself. He was the editor of the Kirchliche Handlexikon from 1907 - 1912 and between 1930 and 1938 he was the editor of the Lexikon für Theologie und Kirche which in 10 volumes contained 8000 articles
In both publications he showcases "christian" antisemitism. Even in his own books he does show sympathy for this position.
At no time and in no form did Buchberger oppose or speak out against the Third Reich.
After the war Buchberger was active in rebuilding the diocese. Immediately after the end of the war in 1945 95 charitable institutions were founded by him. In the following years 175 new churches were built on his initiative.
In 1950 on the occasion of the Christian Jubilee Pope Pius XII made him an Archbishop.