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.~1878), then head of a 5-person household.
Age 62
b. ~1878
Female
Spouse
Born: Canada Eng
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Keefe |
| Given Name | Mary E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 62 |
| Marital Status | Married |
| Birthplace | Canada Eng |
| 1935 Residence (City) | Arlington |
| 1935 Residence (County) | Middlesex |
| Naturalization Status | Naturalized |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birthplace (normalized) | canada eng |
| Township / Ward | Arlington |
| Est. Birth Year | ~1878 |
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 |
|---|---|---|---|---|
| Kathleen Keefe | Daughter | — | 33 | ~1907 |
| Daniel Keefe | Head | — | 67 | ~1873 |
| Mary Keefe | Spouse | — | 62 | ~1878 |
| George Keefe | Son | — | 24 | ~1916 |
| Margaret Keefe | Daughter | — | 35 | ~1905 |
Census Appearances
1930
Suffolk, Massachusetts
Other, age 54
Suffolk, Massachusetts · implied b. ~1876 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Keefe |
| Given Name | Margaret |
| Relationship to Head | Roomer |
| Sex | F |
| Color / Race | White |
| Age | 54 |
| Marital Status | Single |
| Birthplace | Canada Eng |
| Naturalization Status | Alien |
| Year of Immigration | 1900 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Canada Eng |
| Occupation | Housekeeper |
| Industry | Servant |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Veteran | No |
| Birthplace (normalized) | canada eng |
1940
Middlesex-County, Massachusetts
Spouse, age 62
Middlesex-County, Massachusetts · implied b. ~1878 — 5 household members
| Surname | Keefe |
| Given Name | Mary E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 62 |
| Marital Status | Married |
| Birthplace | Canada Eng |
| 1935 Residence (City) | Arlington |
| 1935 Residence (County) | Middlesex |
| Naturalization Status | Naturalized |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birthplace (normalized) | canada eng |
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 62 · b. ~1878 · 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-t0627-01601-00183)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Martin J. Kelly | 52 | Head | P.O. Clerk | Ireland |
| 42 | Mary G. Kelly | 39 | Wife | — | Mass |
| 43 | Helen V. Kelly | 20 | Daughter | New Worker | Mass |
| 44 | Cornelius Mcnamara | 48 | Head | Bus Oper. | Ireland |
| 45 | Angelina Mcnamara | 51 | Wife | — | Canada Eng |
| 46 | Cornelius Mcnamara | 21 | Son | Truck Driver | Mass |
| 47 | Mary Mcnamara | 20 | Daughter | Bookkeeper | Mass |
| 48 | Joseph Mcnamara | 18 | Son | — | Mass |
| 49 | Rita Mcnamara | 16 | Daughter | — | Mass |
| 50 | Alban S. Buttrick | 30 | Head | Salesman | Mass |
| 51 | Lucy Buttrick | 31 | Wife | — | Canada Eng |
| 52 | Rebecca Buttrick | 0 | Daughter | — | Mass |
| 53 | Joseph A. Silva | 42 | Head | Barber | Portugal |
| 54 | Edna R. Silva | 31 | Wife | — | Mass |
| 55 | Claire Silva | 8 | Daughter | — | Mass |
| 56 | Dorothy Silva | 6 | Daughter | — | Mass |
| 57 | Joseph A. Jr. Silva | 2 | Son | — | Mass |
| 58 | George Wilson | 59 | Head | Grocer | England |
| 59 | Frances Wilson | 59 | Wife | — | Mass |
| 60 | Florence M. Wilson | 28 | Daughter | Clerk | Mass |
| 61 | Daniel Keefe | 67 | Head | Manager Of House | Ireland |
| 62 | Mary E. Keefe THIS PERSON | 62 | Wife | — | Canada Eng |
| 63 | Margaret Keefe | 35 | Daughter | — | Mass |
| 64 | Kathleen Keefe | 33 | Daughter | — | Mass |
| 65 | George L. Keefe | 24 | Son | Attendant | Mass |
| 66 | John J. Gallagher | 43 | Head | Bookkeeper | Mass |
| 67 | Lucy Gallagher | 29 | Wife | — | Mass |
| 68 | Louise Gallagher | 13 | Daughter | — | Mass |
| 69 | Irene Gallagher | 10 | Daughter | — | Mass |
| 70 | Frances Gallagher | 8 | Daughter | — | Mass |
| 71 | Evelyn Gallagher | 5 | Daughter | — | Mass |
| 72 | Albert Gallagher | 1 | Son | — | Mass |
| 73 | John J. Hartnett | 61 | Head | Letter Carrier | Mass |
| 74 | Edith Hartnett | 57 | Wife | — | Mass |
| 75 | Raymond Hartnett | 25 | Son | — | Mass |
| 76 | Patrick Sweeney | 43 | Head | Printer | Mass |
| 77 | Frances Sweeney | 42 | Wife | — | Mass |
| 78 | Mary Sweeney | 19 | Daughter | Waitress | Mass |
| 79 | Frances Sweeney | 15 | Daughter | New Worker | Mass |
| 80 | Mildred Sweeney | 13 | Daughter | — | 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)