I believe the William N. Wilson listed on page 400 of the 1840 census could be my great-great-grandfather.  If so, he was the son of George B. Wilson (b: abt. 1764 in Pennsylvania?,  d: 4/14/1834) and Agnes McMachen (b: abt. 1776, d: 8/10/1834).  Both are  buried in the Wilson Cemetery in Butler Co.. William N. Wilson (b: 8/14/1801 d: 2/28/1971) married Mary Elizabeth Martin (b: abt 1808 in Pennsylvania?, d: abt 1869) on 10/28/1824.  They are also buried in the Wilson Cemetery.  I believe William N. and Mary had some seven children with these approx. birth years (based on dwelling #834 of 1850 Census):
George G.        1827
Sally            1830
Albina           1834
Thomas J.        1840  (10/8/1840?)
William H.       1843
James            1845
Robert D.        1849
I'm working for any information to confirm or correct this info.  Also, I'm interested in learning of William N.'s  siblings.  Possibilities are:
Jane (m. Obed Bennett 11/16/1824)
Matilda Jane (m.Benjamin Porter 6/30/1824) (d: 10/2/1890)  - W. T. Wilson