+———Nicholas T. Koontz      |  +———William W. Koontz (22 May 1870 Mt. Morris, Ogle Co, IL – 1940 Mt. Morris, Ogle Co, IL)  |   |                  |   |           +———Jacob Henry Mumma (9 Apr 1766 Lancaster Co, Pensylvania – 23 Sep 1848)  |   |           |  |   |       +———John Mumma (12 Dec 1787 – 25 Nov 1835)  |   |       |   |      |   |       |   +———Elizabeth Newcomer Hertzler (4 Oct 1764 – 23 Feb 1836)  |   |       |  |   |   +———Elias Alexander Mumma (4 Apr 1809 Washington Co, MD – 1885)  |   |   |   |      |   |   |   +———Elizabeth Susan Shafer (19 Mar 1791 – 1 Aug 1820)  |   |   |  |   +———Susan M. Mumma (28 Jul 1845 IL – 17 Jul 1898 Ogle Co, IL)  |       |              |       |       +———John Miller  |       |       |  |       |   +———Daniel Miller (12 Sep 1778 – )  |       |   |  |       +———Susanna Miller (20 Feb 1809 MD – 25 May 1869)  |           |      |           +———Catherine Funk ( – 1823 Washington Co, MD)  |      Vivian Pauline Koontz   |          |   +———Samuel Domer (3 Sep 1818 Sharpsburg, Washington Co, MD – 4 Jul 1898 Mt. Morris, Ogle Co, IL)  |   |  +———Sarah A. Domer (10 Jul 1873 Leaf River, Ogle Co, IL – 1940)      |              |   +———William Herman Varner      |   |      +———Rachel E. Varner (3 Jan 1829 Fayette Co, OH – 8 Apr 1914)          |              +———Cynthia Ann Knox