By 1812, Spain ceded dominion of the Coast to the U.S., adding it to the Mississippi Territory. At that time, most of north-shore Back Bay Biloxi was settled by three related Swiss-French Ladnier families and by the Indian-French Elizabeth Boudreau. Boudreau's U.S. strip, which had an 18th century Canadian wood fort trading post, was reissued to the newcomer Louis Caillavet. After statehood in 1817, the next generation and new arrivals erected homes on both shores of the bay. Horse and wagon trails evolved and, following the high ground, converged at this site, known as West End crossing or Five Point. The five wagon roads were Ocean Springs-Ramsey Springs, Cedar Lake-Wells Ferry, Brickyard, Back Bay Ferry, and St. Martin. In 1901, a wooden bridge crossing Back Bay south of Five Point brought more traffic and further growth to the village of Seymour, later called Back Bay, North Biloxi, and now D'Iberville. Horse racing developed, and St. Martin Road became a track. In 1902, a special race drew a large crowd, but fourteen-year-old Randy Quave was killed when he was thrown from his horse into an oak at the track's east turn. It was the last race, and St. Martin Road became Race Track Road. In 1926, the wood bridge was replaced by a modern concrete unit. This D'Iberville Bridge completed the last link in the famed Old Spanish Trail between Jacksonville, FL and San Diego, CA. The Five Trails were soon paved.