0'REGAN, Anthony, R. C. bishop, born in Kiltullagh, Ireland, early in the 19th century; died in London. England, 13 November, 1866. He emigrated to the United States, was appointed vicar-general of the diocese of St. Louis, and was also president of the college of Carondelet, and professor of theology and sacred scriptures. In 1853 he was nominated bishop of Chicago. He declined the appointment, but a rescript from the pope was sent to him in 1854, that ordered him to accept the post, and he was consecrated the same year. The diocese was in a very disorganized condition; there was considerable opposition to the administrative methods of the new bishop, and he found it a difficult task to restore order. Although he was partially successful, many complaints were made to the pope of his harshness, and he went to Rome to obtain permission to resign. He was finally successful and was transferred to the titular see of Dora in 1858. He did not return to the United States, but left large sums for the training of ecclesiastical students for the diocese of Chicago, and the erection of a hospital in that city.