Thank you for the ancestry suggestion. When the libraries open again, I will try to check that particular tree out. For others searching at home, here is the marriage record of John Sharp and Charlotte Throssell.
Marriages in Titchmarsh 1813 to 1837
P1 #3, 28 Feb, 1814, John Sharp of parish of Warmington and Charlotte Thropel [Throsell] of this parish, banns with consent of parents. Wits the clerk, Wm Curwain, and Ths Fryer. Although John Sharp was of the parish of Warmington, he was born in Great Addington. Charlotte was a child of Thomas Throssell and Mary Fryer of Titchmarsh. They lived for several years in Oundle before moving to Barnwell. Charlotte died before him.
Jenny