I have only recently picked-up my family history again - I needed a break after 15 years! I see that you and pgc5bjc are still looking for details on Martha Bonynge and family.
Do you have computer software like Family Tree Maker?
If so, I can send you a report showing the links between Bonynges, Williams etc.
If I can help you both in any way, please respond to my email address email@example.com