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Mary Mann — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this Mary Mann across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1917), then head of a 7-person household.
Age 23
b. ~1917
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Mann |
| Given Name | Mary A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Occupation | Stenographer |
| Industry | Customs Broker |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 236 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Stenographer |
| Township / Ward | Boston City |
| Est. Birth Year | ~1917 |
Household Members
Census records only state relationship to the household head.
Pairwise kinship is derived (~90–95% accurate), not recorded.
Step/blended families and boarders can break it.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mildred Mann | Daughter | — | 39 | ~1901 |
| James Mann | Son | — | 25 | ~1915 |
| Mary Mann | Daughter | — | 23 | ~1917 |
| Beatrice Mann | Daughter | — | 28 | ~1912 |
| Margaret Mann | Spouse | — | 62 | ~1878 |
| Peter Mann | Head | — | 62 | ~1878 |
| Henry Mann | Son | — | 37 | ~1903 |
Census Appearances
1930
Suffolk, Massachusetts
Daughter, age 12
Suffolk, Massachusetts · implied b. ~1918 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mann |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Maine |
| Mother's Birthplace | Newfoundland |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Daughter, age 23
Suffolk-County, Massachusetts · implied b. ~1917 — 7 household members
| Surname | Mann |
| Given Name | Mary A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Occupation | Stenographer |
| Industry | Customs Broker |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 236 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
Model Tree
An inferred pedigree reconstructed from census links — up to 4 generations within the 1900–1950 window. Closer generations are built from household co-residence; deeper ones are bridged by following a relative to their own childhood census. Confidence compounds and weakens with each generation.
Our Model Tree links Mary Mann across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Mann
Daughter · 1940 · age 23 · b. ~1917 · Massachusetts
★ You are viewing this record
Sibling
Mildred Mann
Sibling · 1940 · age 39
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Beatrice Mann
Sibling · 1940 · age 28
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Mann
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Henry Mann
Sibling · 1940 · age 37
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Suffolk-County, Massachusetts
Open full size
1940 US Federal Census — Suffolk-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01668-00716)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Patricia Gaffney | 9 | Daughter | — | Massachusetts |
| 42 | Hamaie | Tamaie Glebow | 64 | Head | — | Germany |
| 43 | Henry Glebow | 42 | Son | Proprietor | Germany |
| 44 | Max Hennings | 52 | Head | White Maker | Germany |
| 45 | Agnes Hennings | 46 | Wife | — | Massachusetts |
| 46 | John R. French | 58 | Head | Shipper | Massachusetts |
| 47 | Clara L. French | 53 | Wife | — | Massachusetts |
| 48 | Louise A. Stoll | 57 | Head | Bookkeeper | Massachusetts |
| 49 | Peter Mann | 62 | Head | Doorman | New York |
| 50 | Margaret Mann | 62 | Wife | — | New York |
| 51 | Henry L. Mann | 37 | Son | Bartender | Massachusetts |
| 52 | Mildred M. Mann | 39 | Daughter | Stenographer | Massachusetts |
| 53 | Beatrice C. Mann | 28 | Daughter | Stenographer | Massachusetts |
| 54 | Mary A. Mann THIS PERSON | 23 | Daughter | Stenographer | Massachusetts |
| 55 | James C. Mann | 25 | Son | Chauffeur | Massachusetts |
| 56 | Mary A. Mccarthy | 64 | Head | — | Ireland |
| 57 | Charles J. Mccarthy | 37 | Son | Office Clerk | Massachusetts |
| 58 | Elizabeth F. Mccarthy | 30 | Daughter | Saleslady | Massachusetts |
| 59 | Agnes G. Mccarthy | 28 | Daughter | Office Clerk | Massachusetts |
| 60 | Mary A. O'Brien | 64 | Head | — | Irish Free State |
| 61 | Leonard G. O'Brien | 35 | Son | Office Clerk | Massachusetts |
| 62 | Anna R. O'Brien | 26 | Daughter | Stenographer | Massachusetts |
| 63 | Richard W. O'Brien | 22 | Son | Bookkeeper | Massachusetts |
| 64 | Harry J. Bolland | 45 | Head | Chef | Wisconsin |
| 65 | Hattie Bolland | 46 | Wife | — | Wisconsin |
| 66 | Harry J. Jr. Bolland | 19 | Son | New Worker | England |
| 67 | Beatrice B. Bolland | 13 | Daughter | — | Massachusetts |
| 68 | Michael J. Sheil | 47 | Head | Machine Operator | Massachusetts |
| 69 | Theresa C. Sheil | 40 | Sister | Armature Winder | Massachusetts |
| 70 | Margaret O'Connell | 64 | Head | — | Massachusetts |
| 71 | Irene B. O'Connell | 34 | Daughter | Stenographer | Massachusetts |
| 72 | Abby T. O'Connell | 32 | Daughter | Bookkeeper | Massachusetts |
| 73 | Gertrude O'Connell | 29 | Daughter | Stenographer | Massachusetts |
| 74 | Kathryn O'Connell | 26 | Daughter | — | Massachusetts |
| 75 | Clifford Abby O'Connell | 20 | Son | — | Massachusetts |
| 76 | William J. Glennon | 57 | Head | Electric Engineer | Massachusetts |
| 77 | Julia G. Glennon | 42 | Wife | — | Massachusetts |
| 78 | William J. Jr. Glennon | 13 | Son | — | Massachusetts |
| 79 | John C. Glennon | 7 | Son | — | Massachusetts |
| 80 | Hammond Drake | 60 | Head | Salesman | Canada |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 United States Federal Census (NARA). Our Model Tree links this person across census decades using XGBoost-based record linkage, with per-link confidence scores. Household corroboration strengthens the signal when co-residents appear on the same census pages in multiple years.
Source: National Archives and Records Administration (NARA)