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John Keefe — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this John Keefe across the 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 7-person household.
Age 11
b. ~1929
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Keefe |
| Given Name | John S. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Highest Grade | 6 |
| 1935 Residence | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Wilmington |
| Est. Birth Year | ~1929 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Genevieve Keefe | Spouse | — | 29 | ~1911 |
| John Keefe | Head | — | 33 | ~1907 |
| Dorothy Keefe | Daughter | — | 6 | ~1934 |
| John Keefe | Son | — | 11 | ~1929 |
| James Keefe | Son | — | 8 | ~1932 |
| Joan Keefe | Son | — | 7 | ~1933 |
| Kenneth Keefe | Son | — | 2 | ~1938 |
Census Appearances
1930
Suffolk, Massachusetts
Other, age 1
Suffolk, Massachusetts · implied b. ~1929 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Keefe |
| Given Name | John S. |
| Relationship to Head | Boarder-Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | none |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Son, age 11
Middlesex-County, Massachusetts · implied b. ~1929 — 7 household members
| Surname | Keefe |
| Given Name | John S. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Highest Grade | 6 |
| 1935 Residence | Massachusetts |
| 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 John Keefe across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Keefe
Son · 1940 · age 11 · b. ~1929 · Massachusetts
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Sibling
Joan Keefe
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Keefe
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kenneth Keefe
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Keefe
Sibling · 1940 · age 6
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 — 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-t0627-01621-00620)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Mary Norman E. Gary | 20 | Son | — | Massachusetts |
| 42 | Frederic L. Gary | 16 | Son | — | Massachusetts |
| 43 | Walter Haller | 40 | Head | Labourer | Massachusetts |
| 44 | Stella L. Haller | 39 | Wife | — | Massachusetts |
| 45 | Walter F. Haller | 17 | Son | Clerk | Massachusetts |
| 46 | Richard C. Haller | 11 | Son | — | Massachusetts |
| 47 | Walter S. Haller | 9 | Son | — | Massachusetts |
| 48 | Thomas J. Buckley | 32 | Head | Laborer | Rhode Island |
| 49 | Helen D. Buckley | 28 | Wife | — | Massachusetts |
| 50 | Marjorie A. Buckley | 7 | Daughter | — | Massachusetts |
| 51 | Nancy M. Buckley | 2 | Daughter | — | Massachusetts |
| 52 | Edward L. Howe | 54 | Head | Electrician | Massachusetts |
| 53 | Josephine Howe | 53 | Wife | — | Massachusetts |
| 54 | John Keefe | 33 | Head | Truck Driver | Massachusetts |
| 55 | Genevieve Keefe | 29 | Wife | — | Massachusetts |
| 56 | John S. Keefe THIS PERSON | 11 | Son | — | Massachusetts |
| 57 | James V. Keefe | 8 | Son | — | Massachusetts |
| 58 | Joan E. Keefe | 7 | Son | — | Massachusetts |
| 59 | Dorothy J. Keefe | 6 | Daughter | — | Massachusetts |
| 60 | Kenneth J. Keefe | 2 | Son | — | Massachusetts |
| 61 | Joseph A. Crispo | 39 | Head | Foreman | Massachusetts |
| 62 | Margaret E. Crispo | 35 | Wife | — | Massachusetts |
| 63 | Joseph A. Crispo | 12 | Son | — | Massachusetts |
| 64 | Elaine J. Crispo | 11 | Daughter | — | Massachusetts |
| 65 | Charlotte M. Crispo | 10 | Daughter | — | Massachusetts |
| 66 | Mona G. Crispo | 9 | Daughter | — | Massachusetts |
| 67 | Joseph A. W. Crispo | 7 | Son | — | Massachusetts |
| 68 | Peter B. Galka | 35 | Head | Mechanic | Massachusetts |
| 69 | Avis M. Galka | 30 | Wife | Mechanic | Massachusetts |
| 70 | Avis M. Galka | 13 | Daughter | — | Massachusetts |
| 71 | H. Russell Arthur | 67 | Head | — | New Hampshire |
| 72 | Matilda Arthur | 61 | Wife | Retired | Massachusetts |
| 73 | Walter Taylor | 30 | Son | Truck Driver | Massachusetts |
| 74 | Marie Taylor | 29 | Daughter | Truck Driver | Massachusetts |
| 75 | Harry H. Mathee | 28 | Head | Owner | Massachusetts |
| 76 | Mary A. Mathee | 24 | Wife | Owner | Canada-English |
| 77 | Harold Mathee | 2 | Son | — | Massachusetts |
| 78 | Chelsea G. Davis | 62 | Head | Retired | Vermont |
| 79 | Anna Davis | 55 | Wife | Assistant | Vermont |
| 80 | William E. Wagstaff | 36 | Head | Foreman | Canada-English |
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)