Mary Hannah Williams may have married John Duckett in New Zealand in 1875, but has not been confirmed as yet, as cannot find adequate documentation as yet. Mary Hannah Williams and John Duckett had several children, their marriage and birth registrations for some of their children can be found on the NZ BDM website. It appears they moved to New Zealand and then some of the family were in Michigan or other areas in the United States.
https://www.bdmhistoricalrecords.dia.govt.nz
Name: WILLIAMS, HANNAH
Mother's Maiden Surname: ORCHARD
GRO Reference: 1850 SEP Quarter in HELSTON
Volume 09 Page 113
Day Month 02-Oct Year 1850 Parish Crowan
Forename Mary Hanah Surname WILLIAMS
Sex dau
Father Forename Edward
Mother Forename Hanah
Residence Crowan
Father Rank Profession sawyer
Transcriber Sue Mutton
Name: Mary Hannah Williams
Age: 7 Mo Estimated birth year: abt 1850 Relation: Daughter
Father's name: Edward Williams Mother's name: Hannah Williams
Gender: Female Where born: Crowan, Cornwall, England
Civil Parish: Crowan County: Cornwall Country: England
Registration district: Helston Sub-registration district: St Keverne
ED, institution, or vessel: 1g Household schedule number: 27
Household Members: Name Age
Edward Williams 34; Hannah Williams 23; Mary Hannah Williams 7 Mo; Hannah Williams 80.
Source Citation Class: HO107; Piece: 1913; Folio: 514; Page: 10; GSU roll: 221067
Name: Mary Hannah Williams
Age: 10 Estimated birth year: 1851 Relation: Daughter
Father's name: Edward Williams Mother's name: Hannah Williams
Gender: Female Where born: Crowan
Civil Parish: Crowan County: Cornwall Country: England
Registration district: Helston Sub-registration district: Crowan
ED, institution, or vessel: 7 Household schedule number: 60
Household Members: Name Age
Edward Williams 45; Hannah Williams 37; Mary Hannah Williams 10; Ann Williams 9; Elizabeth Williams 8; Martha Williams 5; Grace Williams 4.
Source Citation Class: RG 9; Piece: 1575; Folio: 80; Page: 12; GSU roll: 542833
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