"United States Census, 1850," James B Black in household of James B Black, Montgomery county, Montgomery, Illinois, United States
Image available
note William Black birth place
https://familysearch.org/pal:/MM9.1.1/M85D-Z1M
1860 census
https://familysearch.org/pal:/MM9.1.1/MX48-YTQ
MARY AND HER HUSBAND, JAMES, MOVED TO ILLNOIS IN 1831 AND SETTLED ON BEAVER CREEK, BOND CO., ILL., 6 MILES SOUTH OF GEENVILLE. AFTER LIVING THERE FOR TEN YEARS THEY MOVED TO THE SOUTHERN PART OF MONTGOMERY CO., ILL, TEN MILES FROM HILLSBORO<p>1850 CENSUS MONTOGOMERY CO., ILL PAGE 150 JAMES B. BLACK 51 FARMER TN MARGARET 51 (3RD WIFE) B. NC (NO CHILDREN) WILLIAM 16 B. ILL THOMAS 22 B. KY
https://familysearch.org/pal:/MM9.2.1/S1SK-39H
The parents of William Black b. 13 Nov. 1817 are Robert Black and Jane Buchanan. I have letters from William F. Black and Octavia Black giving some family genealogy. I descend from William's oldest brother James Buchanan Black b. 1799.
http://boards.ancestry.com/surnames.black/3230.1/mb.ashx
Robert Black and Jane Buchanan parents of James Buchanan Black