It was apparently created in August 1846 and covered all around what is now the intersection of Mormon Bridge Road and Young Street in Omaha, Nebraska, though it appears to have been completely vacated by December 1846, before even Nebraska Territory came into existence.
Irwin left the company in 1856 and went to the Nebraska Territory where he acted as a secretary for a company settling the town of Saratoga.
He graduated from Oberlin College in 1850 and from the Albany Medical College in 1853, where he attracted the notice of Professor James Hall, state geologist of New York, through whose influence he was induced to join in an exploration of Nebraska Territory, with Fielding B. Meek to study geology and collect fossils.
Notably, he worked on columns for the Nebraska Territory capitol building, which were transported across the Missouri River from Council Bluffs to Omaha.
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The battalion located its headquarters at Pacific Springs, Nebraska Territory, assigned to protect travelers and interests along the North Platte and Sweetwater Rivers, and then at South Pass, Idaho Territory, to guard the Overland Mail routes from Julesburg, Colorado to Green River, Wyoming.
His brothers included Armistead Burt (November 16, 1802 – October 30, 1883), who was elected to Congress in 1843 for South Carolina and served until 1853 and who was married to the niece of John C. Calhoun, and Francis Burt (January 13, 1807 - October 18, 1854), who served in Washington, D.C. as the Third Auditor of the Treasury, and in 1854 was appointed the first Territorial Governor of Nebraska.
After obtaining a charter from the Pottawatomie County Commissioners, Brown called his enterprise the Lone Tree Ferry after the single tree which marked his landing on the Nebraska Territory side of the Missouri River.
When Lincoln became President in 1861, he appointed Kellogg as Chief Justice of the Supreme Court of the Nebraska Territory.