Daniel Tyler Daniel Tyler ( January 7 , 1799 – November 30 , 1882 ) was an iron manufacturer , railroad president , and one of the first Union Army generals of the American Civil War . Early life . Tyler was born in Brooklyn , Connecticut to Daniel Tyler ( May 21 , 1750 – April 29 , 1832 ) , a veteran of the Battle of Bunker Hill , and Sarah Edwards Tyler ( July 11 , 1761 – April 25 , 1841 ) . He graduated from the United States Military Academy in 1819 . He became an authority on artillery and an honest inspector of arms of private contractors , which appears not to have helped him advance in rank . Tyler resigned his commission in the United States Army in May 1834 and became an iron manufacturer , developing blast furnaces and rolling mills . He was the president of the Norwich and Worcester Railroad and , for five years , the Macon and Western Railroad in Georgia . Later , Tyler served as the superintending engineer of the Dauphin and Susquehanna Railroad and the affiliated Allentown Railroad , and became president and engineer when the former was reorganized as the Schuylkill and Susquehanna Railroad . He had greater success in the railroad industry than he had in the manufacture of pig iron . American Civil War service . At the start of the Civil War , Tyler volunteered to be an aide - de - camp to Brig . Gen . Robert Patterson in April 1861 . He served briefly as the colonel of the 1st Connecticut Infantry regiment . He was appointed brigadier general in the Connecticut Militia on May 10 , 1861 and commanded a division in Brig . Gen . Irvin McDowell ' s Army of Northeastern Virginia , with which he fought in the First Battle of Bull Run . Tyler was mustered out on August 11 , 1861 . Though he has been assigned a substantial portion of the blame for the Union disaster at Bull Run , he was appointed to the rank of brigadier general of volunteers on March 13 , 1862 . He was sent to the west and commanded a brigade in the Army of the Mississippi between May 1 , 1862 and July 22 , 1862 during the Siege of Corinth . At the Battle of Harpers Ferry on September 15 , 1862 , Tyler ' s division surrendered to the forces of Confederate Lieutenant General Thomas J . " Stonewall " Jackson . The Union soldiers , who were paroled after their capture , were sent to Camp Douglas , which already had been used as a prisoner of war camp for Confederates captured at the Battle of Fort Donelson , for temporary detention . Under the terms of the prisoner exchanged cartel then in effect , they had to await formal exchange before they could leave the camp . These 8 , 000 paroled Union soldiers began to arrive at Camp Douglas on September 28 , 1862 and Tyler took temporary command of the camp . Under Tyler ' s command these Union soldiers had to live under similar conditions to those endured by the Confederate prisoners from Fort Donelson . In fact , the conditions were worse because the camp had become filthy and even more run down during its occupancy by the prisoners . The parolees had a two - month stay at the camp . Tyler was relieved as commander on November 20 , 1862 . Later , Tyler commanded at Baltimore , at Harper ' s Ferry between June 13 , 1863 and July 3 , 1864 , and finally at the District of Delaware between July 3 , 1863 and January 19 , 1864 . Aftermath . Tyler resigned his commission in the Union Army on April 6 , 1864 , then being older than the retirement age of 65 , and moved to New Jersey . Then , in the 1870s , he moved to Alabama and founded the town of Anniston , named for his daughter - in - law . He established an iron manufacturing company and was president of the Mobile and Montgomery Railroad . He also acquired large tracts of land in Guadalupe County , Texas . Daniel Tyler died while visiting New York City on November 30 , 1882 . He is buried in Hillside Cemetery , at Anniston , Alabama . Tyler ' s granddaughter , Edith Carow Roosevelt would later become First Lady of the United States after her marriage to Theodore Roosevelt . His nephew , Robert O . Tyler , was also a brigadier general in the Union Army .