 
| Type | Valeur | 
|---|---|
| Titre | Mary in entry for Robert Duffield, "England Births and Christenings, 1538-1975" | 
| "England Births and Christenings, 1538-1975", database, FamilySearch (https://familysearch.org/ark:/61903/1:1:JQMH-KM3 : 19 March 2020), Mary in entry for Robert Duffield, 1726. |