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Mary Whalen — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Mary Whalen across the 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a spouse (b.~1886), then head of a 7-person household.
Age 54
b. ~1886
Female
Spouse
Born: Canada English
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Whalen |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | Canada English |
| 1935 Residence (City) | Waltham |
| 1935 Residence (County) | Middlesex |
| Naturalization Status | Naturalized |
| Additional Details | |
| Highest Grade | H-3 |
| 1935 Residence | Same place |
| Birth Country | Canada |
| Birthplace (normalized) | canada english |
| Township / Ward | Waltham |
| Est. Birth Year | ~1886 |
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 |
|---|---|---|---|---|
| Margaret Whalen | Daughter | — | 29 | ~1911 |
| Marion Whalen | Daughter | — | 17 | ~1923 |
| Alice Whalen | Daughter | — | 27 | ~1913 |
| John Whalen | Head | — | 57 | ~1883 |
| George Rude | Other | — | 53 | ~1887 |
| John Whalen | Son | — | 30 | ~1910 |
| Mary Whalen | Spouse | — | 54 | ~1886 |
Census Appearances
1930
Suffolk, Massachusetts
Other, age 45
Suffolk, Massachusetts · implied b. ~1885 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Whelen |
| Given Name | Margaret |
| Relationship to Head | Maid |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Widowed |
| Birthplace | Canada English |
| Naturalization Status | Alien |
| Year of Immigration | 1915 |
| Age at First Marriage | 25 |
| Father's Birthplace | Canada English |
| Mother's Birthplace | Canada English |
| Occupation | Servant |
| Industry | Family |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | Canada |
| Birthplace (normalized) | canada english |
1940
Middlesex-County, Massachusetts
Spouse, age 54
Middlesex-County, Massachusetts · implied b. ~1886 — 7 household members
| Surname | Whalen |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | Canada English |
| 1935 Residence (City) | Waltham |
| 1935 Residence (County) | Middlesex |
| Naturalization Status | Naturalized |
| Highest Grade | H-3 |
| 1935 Residence | Same place |
| Birth Country | Canada |
| Birthplace (normalized) | canada english |
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 Whalen across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Whalen
Spouse · 1940 · age 54 · b. ~1886 · Massachusetts
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Middlesex-County, Massachusetts
Open full size
1940 US Federal Census — Middlesex-County, Massachusetts
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01619-00024)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Milton W. Morris | 31 | Head | Electrician | New Hampshire |
| 42 | Mildred M. Morris | 27 | Wife | — | Mass |
| 43 | Beverly J. Morris | 6 | Daughter | — | Mass |
| 44 | Nancy Morris | 4 | Daughter | — | Mass |
| 45 | Milton Jr. Morris | 2 | Son | — | Mass |
| 46 | Carol A. Morris | 1 | Daughter | — | Mass |
| 47 | John Whalen | 57 | Head | Meat Dealer | Mass |
| 48 | Mary Whalen THIS PERSON | 54 | Wife | — | Canada English |
| 49 | John Jr. Whalen | 30 | Son | Truck Driver | Mass |
| 50 | Alice Whalen | 27 | Daughter | Nurse R.N. | Mass |
| 51 | Marion Whalen | 17 | Daughter | — | Mass |
| 52 | George Rude | 53 | Brother-in-law | — | Mass |
| 53 | Margaret Whalen | 29 | Daughter | Art Teacher | Mass |
| 54 | Gladys Ross | 37 | Head | Proprietress | Canada English |
| 55 | Barbara Ross | 14 | Daughter | — | Mass |
| 56 | Donald Ross | 9 | Son | — | Mass |
| 57 | Deborah Ross | 5 | Daughter | — | Mass |
| 58 | Mary Dunkirk | 42 | Daughter | Hairdresser | Canada English |
| 59 | Ellen Mullin | 72 | Mother | Nurse R.N. | Canada English |
| 60 | Hugh Mullin | 32 | Brother | — | Canada English |
| 61 | Louis Shapero | 24 | Head | — | Mass |
| 62 | Elizabeth Shapero | 25 | Wife | — | Mass |
| 63 | Henry Shapero | 44 | Son | Billposter | Mass |
| 64 | Parker Chandler | 25 | Brother | Gas Attendant | Mass |
| 65 | Christine Palmer | 30 | Lodger | Stenographer | New Hampshire |
| 66 | Adeline Herrick | 23 | Lodger | — | Mass |
| 67 | Robert Hanford | 41 | Lodger | Salesman | Connecticut |
| 68 | George Strank | 55 | Head | Undertaker | Mass |
| 69 | Martha M. Strank | 53 | Wife | — | Canada English |
| 70 | Charles W. Pater | 51 | Head | Draftsman | Mass |
| 71 | Edith P. Pater | 50 | Wife | — | Mass |
| 72 | Ralph S. Banks | 38 | Head | Engineer | Mass |
| 73 | Margaret E. Banks | 40 | Wife | — | Scotland |
| 74 | David L. Whalen | 57 | Head | Clerk | Mass |
| 75 | Mary Whalen | 47 | Wife | — | Mass |
| 76 | Dorothy Whalen | 17 | Daughter | — | Mass |
| 77 | Joan Whalen | 11 | Daughter | — | Mass |
| 78 | Peter M. Garrison | 76 | Head | — | Mass |
| 79 | Helen M. Garrison | 45 | Daughter | Bookkeeper | Mass |
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)