There are online ancestry trees that claim she married Jesse M. JANES on July 4, 1901 in Muscatine, Iowa. That was a different Florence CHATFIELD. This Florence was living in Sunfield Michigan in 1910 (1910 US Census - Sunfield, Eaton, MI; ED 94 Henry CHATFIELD). She married Harley F. DAY.
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Find A Grave Memorial# 63280999
Burial Plot U-44
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29th Jun 1900 Census Record in Sunfield, Eaton, Michigan.
13th May 1910 Census Record in Sunfield, Eaton, Michigan.
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Florence A Day in household of Harl F Day, "USA Census, 1920"
Event Place: Windsor, Eaton, Michigan
District: 115
Gender: Female
Age: 26
Marital Status: Married
Race: White
Can Read: Yes
Can Write: Yes
Relationship to Head of Household: Wife
Birth Year (Estimated): 1894
Birthplace: Michigan
Father's Birthplace: Michigan
Mother's Birthplace: Indiana
Sheet Number and Letter: 12A
Household ID: 315
Line Number: 20
Affiliate Name: The U.S. National Archives and Records Administration (NARA)
Affiliate Publication Number: T625
GS Film number: 1820763
Digital Folder Number: 004311588
Image Number: 00643
Household Gender Age Birthplace
Head Harl F Day M 27 Ohio
Wife Florence A Day F 26 Michigan
Son Dorence M Day M 5 Michigan
Dau Ilene E Day F 3 Michigan
Boarder Donald L Freavor M 13 Michigan
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USA Census, 1930
Name: Florence A Day
Event Place: Windsor, Eaton, Michigan
District: 0030
Gender: Female
Age: 36
Marital Status: Married
Race: White
Relationship to Head of Household: Wife
Birth Year (Estimated): 1894
Birthplace: Michigan
Father's Birthplace: Michigan
Mother's Birthplace: Indiana
Sheet Number and Letter: 6A
Household ID: 139
Line Number: 49
GS Film number: 2340718
Digital Folder Number: 004607719
Image Number: 00915
Household Gender Age Birthplace
Head Harley F Day M 37 Ohio
Wife Florence A Day F 36 Michigan
Son Dorance M Day M 15 Michigan
Dau Eilene E Day F 13 Michigan
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Florence Day in household of Harl Day, "USA Census, 1940"
Event Place: Eaton Township, Eaton, Michigan
Gender: Female
Age: 46
Marital Status: Married
Race: White
Relationship to Head of Household: Wife
Birthplace: Michigan
Birth Year (Estimated): 1894
Last Place of Residence: Rural, Eaton, Michigan
District: 23-13
Family Number: 38
Sheet Number and Letter: 2B
Line Number: 57
Affiliate Publication Number: T627
Affiliate Film Number: 1747
Digital Folder Number: 005461584
Image Number: 00411
Household Gender Age Birthplace
Head Harl Day M 47 Ohio
Wife Florence Day F 46 Michigan
Dau Eilena Day F 23 Michigan
Son Billy Joe Day M 8 Michigan