RICHARDS of Lawford and/or Manningtree

[Neko]

very interested in learning the parents names for Elizabeth Richards b. abt 1755 probably in Lawford, possibly bapt. in Manningtree. she is my 4x great grandmother.
not able to access records so would greatly appreciate a look-up.
I don't know anything more about her, but her children's names may give a clue to her siblings and parent's names.

her children's names;
William
James
Joseph
Elizabeth
Hezekiah
Mary Richards
Hezekiah Richards
James
Anne
John Wainwright
Hannah
Thomas
Maria
Thomas
Thomas

were her parents Hezekiah and Mary Richards? was her mother's maiden name Wainwright? the problem is, with exception to Hezekiah, the given names could be in either family. there are a number of Hezekiah Richards in the area, and they are connected to Lawford and Colchester.
many thanks to anyone who can find Elizabeth's possibly non-conformist baptism for me.