Hello
I've not found a lot but here's what I have.
There are Webbs in Cherington for the dates you want having children ,marrying and being buried so it is unlikely she came from elsewhere.The actual records 1600-1664 seem to be missing.
We have 3 marriages in the 1670's and 80's
Mary 1676 by licence to Richard Hemmings last child 1689
Anna 9 June 1681 at Barcheston but of Cherington to Jo Williams
Nicholas 15 April 1684 to Elizabeth Hancock by licence
So for me the 3 would be siblings
Earlier Nicholas Webb is married 22.8.1677 ,no wife given
children Anne 10.9.1669,Damaris 30.3.1673-1690 and Mary 10.6.1671
Burials Nicholas Webb 22.8.1677 ,doesn't sat if child or man so could be the Nicholas having children 1669-1671 or a child of his.
Walter Web 26.4.1669.
It looks like Nicholas was baptised Aug 1638 at Whichford son of Walter.
Siblings Marie 4 April 1624 of Stourton ,Walter 4 March 1626 of Stourton ,John 20 Sep 1629 of Stourton ,Anne 24 Feb 1632 of Stourton ,Elizabeth and Richard October 1635
I'd expect there to be a connection to this family with either Nicholas or Walter being Mary's father.
Tithe records Cherrington
1663 Walter Webb 3, then a gap to Thomas Web 1 and John Webb 1
1671 and 1673 Nicholas 1 and John 1
This seems to confirm Walter was the father of Nicholas and the older generation.
Ciderdrinker