All four participants in Group D are descendants of John Cornelius Adrian Hamilton, a grandson of USA Founding Father, Alexander Hamilton. Alexander Hamilton, b 1755 Charlestown, Nevis, British West Indies, d 1804 in New York City, NY, m Elizabeth Schuyler, b 1757 Albany, NY, d 1854 Washington, DC. Son John Church Hamilton, b 1792 Philadelphia, PA, d 1882 Long Branch, Monmouth, NJ, m Maria Elizabeth Vanden Heuval, b 1793 New York City, d 1873 Niagara Falls, NY. John's son (and Alexander's grandson) John Cornelius Adrian Hamilton, b 1820 New York City, d 1879 Merced, CA, m Angeline Romer, b 1916 Greenburg, NY, d 1889 Springfield, MO. H-039, H-073 and H-079 are descended from Edgar Augustus Hamilton (b 1841), one of the sons of John and Angeline. H-039, a gg grandson of Edgar Augustus Hamilton, is the son of H-073 and the father of H-079. H-073 is a third cousin of H-072.