Well spotted, David.

Here are the marriages of John Kelly and Cath Kelly, 3 days apart in Lawrence:

Name: Julia Ann Hall
Gender: Female
Marriage Date: 4 Mar 1840
Marriage Place: Lawrence, Ohio, USA
Spouse: John Kelly
Film Number: 000317716

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Name: Cader Powell
Gender: Male
Marriage Date: 1 Mar 1840
Marriage Place: Lawrence, Ohio, USA
Spouse: Catharine Kelly
Film Number: 000317716

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Here’s one of Cath Powell nee Kelly’s daughters in 1900 with her maternal uncle’s wife:

1900 US

Name: Sarah L Powell
Age: 56
Birth Date: Jan 1844
Birthplace: Ohio
Home in 1900: Ironton Ward 3, Lawrence, Ohio
Ward of City: 3rd
Street: Vernon St
House Number: 181
Sheet Number: 3
Number of Dwelling in Order of Visitation: 41
Family Number: 44
Race: White
Gender: Female
Relation to Head of House: Boarder
Marital Status: Single
Father's Birthplace: Ohio
Mother's Birthplace: Isle of Man
Occupation: Milliner
Months not employed: 0
Can Read: Yes
Can Write: Yes
Can Speak English: Yes
Neighbors: View others on page
Household Members: Name Age
Julia A Kelly 78
Bertulla Kelly 10
Sarah L Powell 56
Mary J Mitchell 61
Annie E Rice 24
William D Rice 23
Bessie Rice 8/12

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Jean C