Mary died at the age of 55 in 1948 in Sheffield.[2]
Sources
↑Birth Registration:
"England & Wales General Register Office" GRO Online Indexes - Birth (accessed 1 September 2021)
Willoughby, Mary (Mother's maiden name: Marsh). GRO Reference: 1892 Jul-Aug-Sep in Ecclesall Bierlow Volume 09C Page 477.
↑Death Registration:
"England & Wales General Register Office" GRO Online Indexes - Death (accessed 1 September 2021)
Dunwell, Mary (Age at death: 55). GRO Reference: 1948 Jan-Feb-Mar in Chesterfield Volume 03A Page 171.
1901 Census: "England and Wales Census, 1901" Citing Ecclesall Bierlow subdistrict, PRO RG 13, The National Archives, Kew, Surrey. FamilySearch (accessed 1 September 2021) FindMyPast Image (subscription required) Mary Willoughby in household of Dick Willoughby, Heeley, Yorkshire, England, United Kingdom
1911 Census: "England and Wales Census, 1911" Citing PRO RG 14, The National Archives of the UK, Kew, Surrey. FamilySearch (accessed 1 September 2021) FindMyPast Image (subscription required) Mary Willoughby in household of Dick Willoughby, Sheffield, Yorkshire, England, United Kingdom
Colgrave-54 and Willoughby-617 do not represent the same person because: After contact with Mal, I'm rejecting the merge - we don't know which Mary Colgrave even though there is only one Stephen H Duckhouse.
Willoughby-617 and Colgrave-54 appear to represent the same person because: They both married Stephen Duckhouse. The difference in name at birth is explained by Mary's first marriage.