Antoni Klawiter, the Roman Catholic and, afterward, independent Polish Catholic priest, was born in Chojnice, in modern Poland, on November 12, 1836. The scholarly consensus is that he was the son of Polonized Germans; by virtue of his Kashubian birthplace and his later experience pastoring Kashubians in Winona, Minnesota, he will not have been unfamiliar with the Kashubian culture. In 1859, he was ordained a Roman Catholic priest in Włocławek, and became four years afterward one of many Polish priests who were involved with the Polish Insurrection of 1863. In late 1873 or early 1874, Father Klawiter emigrated to the United States.