As you know Eliza J. Cox married John Newton on 24 JAN 1827 with consent given by John Cox f/o Eliza J. I believe the correct order of lineage to be as follows:
+Martha B. Hall
4.Eliza J Cox
Give me a holler if you would like further info on this line. I have dates, other siblings, and possible ancestry to England to around 1598.
Wondering why you hadn't responded before,