Following the American Civil War, he accompanied a cavalry expedition from the banks of the Missouri River to the city of Denver, Colorado.
In 1869 Robinson came to Arkansas to construct the first twenty miles (32 km) of the St. Louis, Iron Mountain and Southern Railway.
[1] In connection with his work on the Little Rock & Fort Smith Robinson received one square mile of land south of the Cadron Ridge in Faulkner County, extending south roughly from what is today Prince Street to Dave Ward Drive.
He reserved the northeast corner of his property for the establishment of a town site, and the southern half as private hunting lands and as a plantation for raising shorthorn cattle, hogs, and sheep.
One year later Robinson married his second wife, Mary Louise De St. Louis of Montreal, Canada.