 Complete the following phrase:  John Grayson was born in Kentucky in 1806 to Alfred W. Grayson and Letitia Breckinridge at the Breckinridge family estate of Cabells Dale. After his fathers death when he was around ten Johns mother married Peter Buell Porter. Grayson was appointed to West Point through his ties to three very powerful families the Breckinridges, Graysons, and Porters. He graduated in 1826 and became a second lieutet in the artillery. He was first assigned to Fort Monroe where he remained for six years. He then served in a variety of southern forts from 1832 to 1835. In 1835 the Second Seminole War broke out in Florida. John fought at Camp Izard and then at the Battle of Oloklikaha. After the Seminole War Grayson was assigned to New Orleans for eleven years. In 1847 Grayson left to fight in the Mexican-American War where he arrived as a captain of the artillery. John later became the Chief Commissariat of Major General Winfield Scott. Grayson fought in many battles in Mexico including the Siege of Veracruz, Battles of Cerro Gordo, Contreras, Churubusco, Molino del Rey, Chapultepec, and the 