1  Mercy Chidester    +  Samuel Long Blair       2  Sarah Ann Blair (23 Dec 1827 Crawford Co, PA – 5 Sep 1913 Naperville, IL)         +  Matthew Blair (14 May 1823 – 21 May 1891 Forreston, Ogle Co, IL)            3  Francis P. Blair (1856 – 4 Aug 1864)            3  Matthew William Blair (1860 Forreston, Ogle Co, IL – )               +  Mary Rebecca Johnson (1862 – )            3  J. Grant Blair (1864 – 21 Oct 1875)            3  Mertie Blair (1870 – 1 Dec 1875)