Could someone tell me please when these two were married, I think it was early 1780's

I have these children for them:-
Margery b1783
Margaret b1785
Ann b1788
Jane b 1790
Robert b1793 married Mary Bridson
John b1797
Elizabeth b1799 married Robert Cowley
Thomas b 1800 married Jane Sayle
Catherine b1802 married M G Hampton

Any help with the above would be appreciated.
Thanks
Eric