As for Amy Wilmot
I would like to see if she got married
Marriages Dec 1898
Wilmot Amy Fulham 1a 434
Age 28, so birth abt 1870
Father named as Samuel Wilmot a joiner, witnesses Eliza & George William VALLANCE
The other two seem unlikely,
If she married, she may well have married as Williams.
More to the point. When did Margeret Wilmot/Williams die? Blowed if I can identify her death