Hi Barbra

I don't have Bethersden birth records, only marriage 1556-1708.
Bethersden is probably about 8 miles from Rolvenden, so the birth of Jane Collins in 1731 is very likely your Jane.
I've looked at the Rolvenden records again and this is what I've found:
Christenings.....
17.3.1699/00. Samuel Button. Son of Richard and Mary.
5.8.1733. William Button. Son of Samuel and Sarah.
2.5.1762. Sarah Button. Daughter of William and Sarah.
29.7.1764. Samuel Button. Son of Willam and Sarah.
6.11.1766. Richard Button. Son of William and Sarah.
25.6.1769. Anne Button. Daughter of William and Jane.
17.2.1771. John Button. Son of William and Jane.
1.7.1772. Samuel Button. Son of William and Jane.
Burials......
24.12.1747. Sarah Button. Wife of Samuel.
3.5.1765. Samuel Button. Infant.
14.3.1729/30. Samuel Button.
17.8.1773. Samuel Button. Son of William and Jane.
2.3.1775. Samuel Button.
24.9.1793. William Button.
29.3.1814. William Button. Age 52.
4.9.1785. William Button........alongside this entry they have.....Poor (P might be Plague)
Marriages.....
26.6.1726. Samuel Button and Sarah Sampson.
There are a great number of Button records in Rolvenden but I think the above are probably all relevant to you. However, which death record applies to your William I don't know!
I did have a scout around for Wills but to no avail.
I also looked for a Rolvenden christening for Sarah Sampson, who may be Williams mum but there are no Sampson christenings at all in Rolvenden.
If you'd like any more lookups feel free to ask

Best wishes HL
