Dear Suz et al.
I am very wary of all tables on websites. Yesterday I was in the Society of Genealogists Library in London, and saw transcripts of the Earls Barton registers in the 18th century. From those, and the Will of James WHITWORTH, I extracted the following issue for James and his wife, Ann:
Robert (bpt. April 14, 1756) (died post-1806, maybe 1829)
Ann (bpt. October 9, 1757); she married John CLARKE, of Harrold, Beds, and she was still alive in 1803, but reputedly died in 1829
Thomas (bpt. July 11, 1760) (reputedly died in 1839)
Mary (bpt. December 29, 1761) (reputedly died in 1844)
Temperance (bpt. September 11, 1765); she had married Thomas KNIGHT, and was still alive in 1803, with a son, Samuel, but she reputedly died in 1810).
James (bpt. April 19, 1767) (died post 1806; maybe in 1853)
Elizabeth (bpt. July 12, 1769) (reputedly died in 1833)
John (bpt. February 19, 1771) (1770/71-1855) (supposedly)
William (bpt. November 25, 1772) (reputedly died in 1849)
Joseph (bpt. June 4, 1774) (reputedly died in 1841)
Benjamin (bpt. August 30, 1775) (appears to have died before 1841, probably in 1832)
Charles (bpt. April 25, 1777) (reputedly died in 1862)
Elizabeth (bpt. May 25, 1778)
I have also discovered that my John WHITWORTH was married again at the ripe old age of 75 in 1845, and have ordered his marriage certificate, which will hopefully confirm who his father was.