FreeREG has a Benjamin Belcher Bapt 17 Jul 1698 St Peter and St Paul , Wantage to WILLIAM/ANNE
Birth 07 Jul 1698
+ his likely Marriage same Church to Elizabeth NOAKE
Familysearch.Org has several children to them;
Anne 1726
Mary 1728
William 1730
Thomas 1732
Elizabeth 1734
Betty 1736
John 1737
Joseph 1741
Elizabeth 1743
Martha 1739
John 1737
No Benjamin that I can see