Born November 25, 1833, in Thil, France. In May, 1846, he and his family embarked upon the long and perilous journey to Dubuque. They first stopped in Chicago where they tarried a short time and then came to Dubuque. The family remained in the city until the following summer, during which time Jean Babtiste, now becoming known as "John B.," attended school. Having had the advantage of a good education for one of his age, in German and French, he had no trouble learning English, and soon became quite proficient in that language also. In the summer of 1817 the mother bought a piece of land in Mosalem township, and thereon erected the old log house, which afterwards became known almost over this and Jackson counties, as one of the most hospitable homes in the country. Mr. Longueville was elected Justice of the Peace. In the early sixties he was elected a member of the board of supervisors. In 1867 he was elected representative from this county, and sat in the twelfth general assembly. He was married but had no children.