I was researching Zerah & Sarah Curryer Rolfe when I came across your message here. You must have the wives reversed for #5 Stephen Scudder. He would have married Elizabeth first & then married Sarah after her husband Zerah died on 16 Apr 1842. He's buried at Spring Hill Cemetery in Butler County Ohio (see findagrave.com).
There's a Sarah Curryer in the 1820 census living in Liberty Twp, Butler County, OH, presumably Sarah's mother. She seems to be head of household so she must be a widow. (I'm using familysearch.org so don't have access to the actual census images.) Skipping to the 1850 census both Sarahs are living in the same household, still in Liberty Twp, their names given as Sarah Currer and Sarah Rolph. Sarah Rolfe's two sons are listed ages 12 and 9. There's also a 2-yr old boy with the surname Denkens, perhaps her nephew.
In the 1860 census for Liberty Twp, Stephen Scudder is apparently now married to Sarah Curryer as his household members are Sarah Scudder, age 45, Mary A. Scudder, age 18, Ezra W. Scudder, age 5, and Elizabeth Scudder, age 17. Presumably the two little ones are Stephen's by his second wife Sarah.