Robert Stockton Williamson

After West Point he was assigned to the Topographic Engineers, and was on several expeditions of exploration in the West.

He was promoted to Captain in August 1861. He produced a number of maps of areas of operations during the war. He was cited by Gen Burnside for having "made some most daring reconnaissances" at New Bern (NC) earlier in 1862.

He was on Gen Burnside's staff as Topographical Engineer.

from 21 November till 21 December, 1862, and held that post in the Department of the Pacific from 9 February till 3 March, 1863, when he was transferred to the corps of engineers, in which he was made major on 7 May. Afterward he served on the Pacific coast as superintending engineer of various surveys of rivers, harbors, and sites for fortifications.

He continued in Army service where he was appointed Lt Colonel 22 Feb 1869. He retired 23 June 1882.

Sources: Heitman, Francis Historical Register and Dictionary of the United States Army 1789-1903, Washington, US Government Printing Office, 1903; and
Appleton's Cyclopedia of American Biography, edited by James Grant Wilson and John Fiske. Six volumes, New York: D. Appleton and Company, 1887-1889

There is a mountain (California, second to Mt Whitney in height) and a bird (sapsucker) named for him.

1/21/1825; Oxford, NY

11/10/1882; San Francisco, CA; burial in Masonic Cemetery, San Francisco, CA