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James Sweeney — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this James Sweeney across the 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1927), then head of a 10-person household.
Age 13
b. ~1927
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Sweeney |
| Given Name | James M. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Everett |
| Additional Details | |
| Highest Grade | S 5 |
| 1935 Residence | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | West Acton |
| Est. Birth Year | ~1927 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Margaretmary Sweeney | Daughter | — | 3 | ~1937 |
| Maureen Sweeney | Daughter | — | 5 | ~1935 |
| Kathleen Sweeney | Daughter | — | 10 | ~1930 |
| Daniel Sweeney | Head | — | 53 | ~1887 |
| James Sweeney | Son | — | 13 | ~1927 |
| Robert Sweeney | Son | — | 7 | ~1933 |
| Joseph Sweeney | Son | — | 11 | ~1929 |
| Daniel Sweeney | Son | — | 17 | ~1923 |
| Paul Sweeney | Son | — | 15 | ~1925 |
| Beatrice Sweeney | Spouse | — | 37 | ~1903 |
Census Appearances
1930
Suffolk, Massachusetts
Son, age 4
Suffolk, Massachusetts · implied b. ~1926 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sweeney |
| Given Name | James M. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Vermont |
| Mother's Birthplace | Illinois |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Son, age 13
Middlesex-County, Massachusetts · implied b. ~1927 — 10 household members
| Surname | Sweeney |
| Given Name | James M. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Everett |
| Highest Grade | S 5 |
| 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 James Sweeney across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Sweeney
Son · 1940 · age 13 · b. ~1927 · Massachusetts
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Sibling
Robert Sweeney
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Daniel Sweeney
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Maureen Sweeney
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kathleen Sweeney
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Sweeney
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaretmary Sweeney
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paul Sweeney
Sibling · 1940 · age 15
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-t0627-01601-00048)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Dorothy Selman | 11 | Daughter | — | Massachusetts |
| 42 | Albert Wait | 40 | Head | Master Electrician | Massachusetts |
| 43 | Alice Wait | 37 | Wife | — | Massachusetts |
| 44 | Clare Wait | 7 | Daughter | — | Massachusetts |
| 45 | Carl A. Freeman | 30 | Head | Plumber | Michigan |
| 46 | Mary E. Freeman | 29 | Wife | Spring Dept | Canada-Eng |
| 47 | Shirley Freeman | 3 | Daughter | — | Massachusetts |
| 48 | Mary K. Butler | 55 | Mother-in-law | — | Canada-Eng |
| 49 | Horace B. Butler | 15 | Brother-in-law | — | Massachusetts |
| 50 | James B. Wilson | 32 | Head | Painter | New Jersey |
| 51 | Elinor H. Wilson | 33 | Wife | — | Massachusetts |
| 52 | Janet B. Wilson | 7 | Daughter | — | Massachusetts |
| 53 | James H. Wilson | 6 | Son | — | Massachusetts |
| 54 | Donald R. Wilson | 3 | Son | — | Massachusetts |
| 55 | David A. Wilson | 1 | Son | — | Massachusetts |
| 56 | Daniel Sweeney | 53 | Head | Night Superintendent | Irish Free State |
| 57 | Beatrice A. Sweeney | 37 | Wife | — | Irish Free State |
| 58 | Daniel J. Sweeney | 17 | Son | — | Massachusetts |
| 59 | Paul J. Sweeney | 15 | Son | — | Massachusetts |
| 60 | James M. Sweeney THIS PERSON | 13 | Son | — | Massachusetts |
| 61 | Joseph M. Sweeney | 11 | Son | — | Massachusetts |
| 62 | Kathleen M. Sweeney | 10 | Daughter | — | Massachusetts |
| 63 | Robert A. Sweeney | 7 | Son | — | Massachusetts |
| 64 | Maureen P. Sweeney | 5 | Daughter | — | Massachusetts |
| 65 | Margaretmary Sweeney | 3 | Daughter | — | Massachusetts |
| 66 | Michael King | 33 | Head | Pipe Fitter | Irish Free State |
| 67 | Josephine N. King | 26 | Wife | — | Massachusetts |
| 68 | James M. King | 3 | Son | — | Massachusetts |
| 69 | Mary Ellen King | 1 | Daughter | — | Massachusetts |
| 70 | Lillian Curley | 49 | Head | — | Irish Free State |
| 71 | Kathleen Curley | 17 | Daughter | — | Massachusetts |
| 72 | Madeline Curley | 16 | Daughter | — | Massachusetts |
| 73 | William Curley | 15 | Son | — | Massachusetts |
| 74 | Dorothy Curley | 14 | Daughter | — | Massachusetts |
| 75 | Patricia Curley | 14 | Daughter | — | Massachusetts |
| 76 | Theresa Curley | 12 | Daughter | — | Massachusetts |
| 77 | Edmund Curley | 9 | Son | — | Massachusetts |
| 78 | Raymond Stuart | 34 | Head | Transit Agent | Massachusetts |
| 79 | Grace Stuart | 32 | Wife | — | Massachusetts |
| 80 | Raymond L. Stuart | 10 | Daughter | — | Massachusetts |
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)