+———William Chidester McClure (16 Mar 1804 Crawford Co, PA – 1846 Ogle Co, IL)  |      William H. McClure (1846 – )  |          |   +———Samuel Long Blair (13 Feb 1783 Northumberland Co, PA – 5 Sep 1861 Adeline, Ogle Co, IL)  |   |  +———Nancy Hammond Blair (16 Feb 1814 Crawford Co, PA – 1906)      |          +———Mercy Chidester (2 Dec 1791 Washington Co, PA – 19 Jun 1861)