Sadly, it looks like it is not a match. Both my Thomas Defrance's dates are different to yours. The thing is I don't think there were that many DeFrances in Guernsey then or even now. It is not a common name in Jersey, a bit more common in Guernsey, but not greatly so.
I will keep you in mind should anything come up, or dates change, etc. Thanks for your help!
If you wish to check with my tree, my DeFrance connections is on my Davey Tree.