MK
Mary Keefe — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Mary Keefe across the 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a spouse (b.~1889), then head of a 5-person household.
Age 51
b. ~1889
Female
Spouse
Born: Massachusetts
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Keefe |
| Given Name | Mary S. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Arlington town |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Arlington Town |
| Est. Birth Year | ~1889 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| William Keefe | Son | — | 26 | ~1914 |
| Mary Keefe | Daughter | — | 25 | ~1915 |
| Paul Keefe | Son | — | 23 | ~1917 |
| William Keefe | Other | — | 54 | ~1886 |
| Mary Keefe | Spouse | — | 51 | ~1889 |
Census Appearances
1930
Middlesex, Massachusetts
Spouse, age 41
Middlesex, Massachusetts · implied b. ~1889 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Keefe |
| Given Name | Mary A. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| Age at First Marriage | 20 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Spouse, age 51
Middlesex-County, Massachusetts · implied b. ~1889 — 5 household members
| Surname | Keefe |
| Given Name | Mary S. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Arlington town |
| 1935 Residence (County) | Middlesex |
| Highest Grade | Hs 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 Keefe across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Keefe
Spouse · 1940 · age 51 · b. ~1889 · 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
40 people indexed on this census page (nara:1940:m-t0627-01601-00637)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | William E. Keefe | 54 | Father | Court Assistant | Massachusetts |
| 2 | Mary S. Keefe THIS PERSON | 51 | Wife | — | Massachusetts |
| 3 | William E. Jr. Keefe | 26 | Son | Electrical Engineer | Massachusetts |
| 4 | Mary J. Keefe | 25 | Daughter | School Teacher | Massachusetts |
| 5 | Paul H. Keefe | 23 | Son | New Worker | Massachusetts |
| 6 | Joseph Jr. Chaves | 29 | Head | Upholsterer | Portugal |
| 7 | Angelina Chaves | 31 | Wife | — | Portugal |
| 8 | Joseph Chaves | 70 | Head | — | Portugal |
| 9 | Mary Bento | 36 | Daughter | Cementer | Portugal |
| 10 | Mary Cunha | 36 | Daughter | Folder | Ironer | Massachusetts |
| 11 | Manuel Cunha | 25 | Son-in-law | Laborer | Massachusetts |
| 12 | Thomas Sartini | 26 | Head | Paymaster | Massachusetts |
| 13 | Eleanor Sartini | 28 | Wife | — | Massachusetts |
| 14 | Joseph Kuchinsky | 59 | Head | Beef Lugger | Russia |
| 15 | Mary Kuchinsky | 48 | Wife | — | Russia |
| 16 | Andrew Kuchinsky | 25 | Son | Baker | Massachusetts |
| 17 | Anna Kuchinsky | 21 | Daughter | Clerical Office | Massachusetts |
| 18 | Walter Kuchinsky | 18 | Son | Messenger | Massachusetts |
| 19 | George Kazinjian | 44 | Head | — | Armenia |
| 20 | Hosanna Kazinjian | 37 | Wife | — | Armenia |
| 21 | Diana Kazinjian | 14 | Daughter | — | Massachusetts |
| 22 | Aurora Kazinjian | 13 | Daughter | — | Massachusetts |
| 23 | George Kazinjian | 11 | Son | — | Massachusetts |
| 24 | Norika Kazinjian | 4 | Daughter | — | Massachusetts |
| 25 | Louis H. Rossi | 24 | Head | Draftsman | Italy |
| 26 | Hope Rossi | 23 | Wife | Salesgirl | Massachusetts |
| 27 | Sandra Rossi | 0 | Daughter | — | Massachusetts |
| 28 | Henry Raynor | 23 | Head | Vegetable Packer | Massachusetts |
| 29 | Dorothy Raynor | 23 | Wife | Laundry Assembler | Massachusetts |
| 30 | Joseph Munsey | 34 | Head | Supervisor | Massachusetts |
| 31 | Veronica Munsey | 28 | Wife | — | Massachusetts |
| 32 | Florentine Munsey | 8 | Daughter | — | Massachusetts |
| 33 | Joseph Jr. Munsey | 1 | Son | — | Massachusetts |
| 34 | Norman Levinson | 27 | Head | Mathematics Teacher | Massachusetts |
| 35 | Zipporah Levinson | 24 | Wife | — | New York |
| 36 | Erica Levinson | 0 | Daughter | — | Massachusetts |
| 37 | J. Gregory Parkins | 36 | Head | Musician | Massachusetts |
| 38 | Lilla Parkins | 39 | Wife | — | Canada-English |
| 39 | J. Gregory Jr. Parkins | 13 | Son | — | Massachusetts |
| 40 | William Craig | 60 | Head | Laborer | Northern Ireland |
Related Census Records
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)