William H. Croxton was mentioned in the 1 January 1858 will of his father, Carter Croxton, proved 28 June 1858. I give to my three sons James C. Croxton, Richard A. Croxton and William H. Croxton my farm, and my three daughters, Elizabeth C. Croxton, Mildred A. Croxton and Sarah L. Croxton, to remain on the farm I now reside as a home for them so long as they remain unmarried. To son William H. Croxton negro boy Joe and negro girl Lizzy. In the event of death or marriage of my wife, personal estate to be divided between my six children. [Westmoreland County, Virgina, Deeds and Wills 35, pages 621–622.]

On 24 October 1859, Lewis A. L. Lamkin qualified as guardian to Richard A. Croxton, William H. Croxton, and Sarah L. Croxton, orphans of Carter Croxton, deceased. James C. Croxton and Mildred A. Croxton, orphans of Carter Croxton, made choice of Lewis A. L. Lamkin as their guardian. On this same date, Lewis A. L. Lamkin submitted his accounts as adminsitrator of the estate of Carter Croxton, deceased. [Westmoreland County, Virginia, Orders 1854–60, page 421.]