KOONTZ, William Henry, a Representative from Somerset County; born in the city of Somerset, Somerset County, Pa., July 15, 1830; clerk to the commisioners, Somerset County (4 years); lawyer (1851-1911); elected, District Attorney, Somerset County (1853-1856); elected, delegate, Republican National Convention (1860); elected, prothonotary and clerk of the courts, Somerset County (1861-1864); elected, United States Congress (July 18, 1866-1869); not a candidate for reelection to Congress (1868); counsel, Baltimore & Ohio Railroad Company; elected to the Pennsylvania House of Representatives as a Republican in 1898 and 1900; not a candidate for reelection to the House (1902); unsuccessful campaign, Pennsylvania State Senate (1906); died, July 4, 1911 in the city of Somerset, Somerset County, Pennsylvania; interred, Union Cemetery, Somerset, Somerset County, Pennsylvania.
Blackburn, E. Howard., and William Henry Welfley. History of Bedford and Somerset Counties, Pennsylvania: With Genealogical and Personal History. Edited by Hon. William Henry Koontz. 3 vols. New York, NY: Lewis Publishing Company, 1906.