John Jr. is my 5th great-grandfather and III is my 4th great-grandfather.
I've changed the last name of III's second wife from Scott to Faren. This is per:
From "William Brown, English Immigrant of Hatfield and Leicester, Massachusetts and his Descendants, c 1669-1994," by Carol Willits Brown, Gateway Press, 1994, pg. 67:
Record of Deaths, Probate Court, Athens, County: Polly Brown, died April 25, 1870, aged 90 yrs. 6 mo. 7 days, widowed, died in Ames Twp.; born in Mass.; father, Noah Faren, no mother listed; color, white; cause of death, old age; place of residence, Ames Twp.
The above book also cites information from a book by Naomi Dodds Phillips, "Phillips-Dodds Family History" that states, "a circuit rider, as preachers were called then, told John Brown about a nice widow woman, Polly Scott Phillips, and later they were married..."
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Polly's third child, Eli Fearing Brown was probably named after Polly's family surname. It is unclear whether the spelling was Faren or Fearing.