Most trees say they were married 1796, without a source - this could have originated as "about 1796", based on the birth year of their first known child.
'1793, 8, 3. Christopher [Hussey] dis mou [disowned for marrying out of unity].'
It is possible that this refers to this Christopher Hussey, whose marriage to Lydia Grubb is not recorded in the Quaker Encyclopedia.