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- [S376] "Civil Registration Index of England and Wales: 1837 - 1983", database, Free BMD Indexes, (http://www.freebmd.org.uk/), Marriage, Bertram Mallett / Mary Jane Trenerry, registered Mar. 1910, Truro, Cornwall, England, volume 5c, page 268, original record held by Office of National Statistics (ONS), General Register Office (GRO), UK.
- [S378] "Civil Registration Index of England and Wales: 1837 - 1983", database, Free BMD Indexes, (http://www.freebmd.org.uk/), Birth, Mary Jane Trenerry, registered June 1888, Truro, Cornwall, England, volume 5c, page 130, original record held by Office of National Statistics (ONS), General Register Office (GRO), UK.
- [S544] "The 1939 Register for England and Wales", database with images, findmypast.com, (https://www.findmypast.com/, accessed Feb 17, 2016), household of Bertram Mallett, Borough/District: Truro M.B., County: Cornwall, Piece Number 6710D, Item Number 008, original record held by The National Archives of the UK (TNA): General Register Office (GRO.).
- [S449] "Census Returns of England and Wales, 1911", database with images, Ancestry.com, (http://www.ancestry.com/, accessed Aug 19, 2012), household of Bertram Mallett, 4 Dereham Terrace, Truro, Cornwall, England, Class RG14, Piece 13855, Schedule 106, original record held by The National Archives of the UK (TNA): Public Record Office (PRO.).
- [S377] Mallett, Nigel, San Diego, California, USA, to Mallett, Robert, e-mail, Oct. 25, 2009, Jan. 19, 2010, Family, Bertram Mallett, privately held by Robert Mallett, Ottawa, Ontario, Canada., M1G629S531.
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