William Gurley (1821-1887), a graduate of the Rensselaer Polytechnic Institute, was a manufacturer in Troy, New York. He and his wife, Maria R. Kenney (d. 1897), had four surviving children: Clara Augusta (b. 1849), Esther Maria (b. 1853, m. Paul Cook), Lewis Warren (b. 1857), and Mary Miller (b. 1860). Clara A. Gurley, an alumna of the Troy Female Seminary, married Dr. Nicholas Williamson (1845-1902) of New Brunswick, New Jersey, on June 2, 1881. Williamson was mayor of New Brunswick from 1895-1902. They had five children: Clara Clouston (b. 1882), Nicholas (August 6, 1883-August 14, 1883), Ruth Alice (b. May 31, 1886), Charles Gurley (b. February 28, 1888), and Mary Agnes Burlock (b. July 29, 1891). In 1903, following her husband's death, Clara Gurley Williamson and her children moved to Dresden, Germany, where they remained until April 1905. Afterward, the Williamson family moved to Indianapolis, Indiana. Clara Gurley Williamson died in 1918.
Nicholas Williamson, son of Nicholas Williamson and Mary Rebecca Burlock, was born in New York City on March 9, 1845. He had six siblings: David Abeel (1840-1862), Mariana (1843-1871), Agnes (b. 1848), Douw Ditmars (b. 1851), George Norman (b. 1853) and Martha Codwise (b. 1855). David Abeel Williamson attended Rutgers College and volunteered as a private with the 7th New York Militia Regiment during the Civil War.
From the guide to the Williamson family collection, 1862-1918, (William L. Clements Library, University of Michigan)