He was one of the able band of professors who in 1870 supported Dbllinger in his resistance to the Vatican decrees, and was excommunicated with Ignaz v.
When, however, Dbllinger and his school in their turn started the Old Catholic movement, Frohschammer refused to associate himself with their cause, holding that they did not go far enough, and that their declaration of 1863 had cut the ground from under their feet.
Young Dbllinger was first educated in the gymnasium at Wiirzburg, and then began to study natural philosophy at the university in that city, where his father now held a professorship. In 1817 he began the study of mental philosophy and philology, and in 1818 turned to the study of theology, which he believed to lie beneath every other science.
About this time Dbllinger brought upon himself the animadversion of Heine, who was then editor of a Munich paper.
In 1832 Lamennais, with his friends Lacordaire and Montalembert, visited Germany, and obtained considerable sympathy in their attempts to bring about a modification of the Roman Catholic attitude to modern problems. Dbllinger seems to have regarded favourably the removal, by the Bavarian government, in 1841, of Professor Kaiser from his chair, because he had taught the infallibility of the pope.