It was Thomas Hancock that married 15 Jul 1706.

Spouse Joanne Fitchet

Their children: Joanna 17 Aug 1707

Thomas 12 Sep 1712

Elizabeth 9 Jul 1715

Ann 15 Mar 1720

Henry 4 Jun 1722

John 20 Jul 1730* not sure about John - it's stretching the time scale a bit much.He is possibly the son of Thomas bap 1712.
No William for Thomas and Joanna. As I said the only William that fits is the one bap 1738 unless our William was not from Finstock.