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John Sweeney — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this John Sweeney across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a head (b.~1880), then head of a 9-person household.
Age 60
b. ~1880
Male
Head
Born: England
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Sweeney |
| Given Name | John L |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 60 |
| Marital Status | Married |
| Birthplace | England |
| 1935 Residence (City) | Somerville City |
| 1935 Residence (County) | Middlesex |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Machinist |
| Industry | Refinery Co. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1200 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth Country | England |
| Birthplace (normalized) | england |
| Occupation | Machinist |
| Township / Ward | Somerville City |
| Est. Birth Year | ~1880 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Rita Sweeney | Daughter | — | 18 | ~1922 |
| Mary Sweeney | Daughter | — | 25 | ~1915 |
| Sarah Sweeney | Daughter | — | 13 | ~1927 |
| John Sweeney | Head | — | 60 | ~1880 |
| Francis Sweeney | Son | — | 21 | ~1919 |
| John Sweeney | Son | — | 23 | ~1917 |
| Edward Sweeney | Son | — | 11 | ~1929 |
| Myles Sweeney | Son | — | 22 | ~1918 |
| Sarah Sweeney | Spouse | — | 46 | ~1894 |
Census Appearances
1920
Middlesex, Massachusetts
Head, age 40
Middlesex, Massachusetts · implied b. ~1880 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sweeney |
| Given Name | John L |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | England |
| Year of Immigration | 1886 |
| Naturalization Status | Naturalized |
| Father's Birthplace | England |
| Mother's Birthplace | Ireland |
| Occupation | Machinist |
| Industry | Shop |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth Country | England |
| Year of Naturalization | 1900 |
| Birthplace (normalized) | england |
1930
Middlesex, Massachusetts
Head, age 50
Middlesex, Massachusetts · implied b. ~1880 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sweeney |
| Given Name | John L. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | England |
| Naturalization Status | Naturalized |
| Year of Immigration | 1884 |
| Age at First Marriage | 24 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | England |
| Occupation | Machinist |
| Industry | Brewery |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Value / Rent | $5000 |
| Birth Country | England |
| Birthplace (normalized) | england |
1940
Middlesex-County, Massachusetts
Head, age 60
Middlesex-County, Massachusetts · implied b. ~1880 — 9 household members
| Surname | Sweeney |
| Given Name | John L |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 60 |
| Marital Status | Married |
| Birthplace | England |
| 1935 Residence (City) | Somerville City |
| 1935 Residence (County) | Middlesex |
| Naturalization Status | Naturalized |
| Occupation | Machinist |
| Industry | Refinery Co. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1200 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth Country | England |
| Birthplace (normalized) | england |
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 Sweeney across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Sweeney
Head · 1940 · age 60 · b. ~1880 · 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-t0627-01704-00205)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Norma E Dinsmore | 15 | Granddaughter | — | Massachusetts |
| 42 | Robert Dinsmore | 14 | Grandson | — | Massachusetts |
| 43 | Leonard P Dinsmore | 11 | Grandson | — | Massachusetts |
| 44 | John A Winterson | 54 | Head | Car Cleaner | Ireland |
| 45 | Mary T Winterson | 51 | Wife | — | Ireland |
| 46 | Rita G Winterson | 20 | Daughter | Bench Work | Virginia |
| 47 | Virginia Winterson | 18 | Daughter | New Worker | Massachusetts |
| 48 | John J Winterson | 14 | Son | — | Massachusetts |
| 49 | John L Sweeney THIS PERSON | 60 | Head | Machinist | England |
| 50 | Sarah A Sweeney | 46 | Wife | — | England |
| 51 | Mary L Sweeney | 25 | Daughter | School Teacher | Massachusetts |
| 52 | John L Sweeney | 23 | Son | Investigator | Massachusetts |
| 53 | Myles A Sweeney | 22 | Son | Factory Worker | Massachusetts |
| 54 | Francis W Sweeney | 21 | Son | Factory Worker | Massachusetts |
| 55 | Rita J Sweeney | 18 | Daughter | New Worker | Massachusetts |
| 56 | Sarah Sweeney | 13 | Daughter | — | Massachusetts |
| 57 | Edward J Sweeney | 11 | Son | — | Massachusetts |
| 58 | John Wright | 63 | Head | Salesman | Ireland |
| 59 | Sarah A Wright | 62 | Wife | — | Ireland |
| 61 | John B Mcgrath | 37 | Head | Central Office | Massachusetts |
| 62 | Ethel V Mcgrath | 41 | Wife | — | Massachusetts |
| 63 | Anthony Di Lorenzo | 26 | Head | Packer | Massachusetts |
| 64 | Philomena Di Lorenzo | 29 | Wife | Stitcher | Italy |
| 65 | Giovannina De Santis | 50 | Mother-in-law | — | Italy |
| 66 | Leonardo De Santis | 28 | Brother-in-law | Window Dresser | Italy |
| 67 | Sabino Gentile | 65 | Head | Blacksmith | Italy |
| 68 | Peter O'Connor | 31 | Son-in-law | Weigher | Massachusetts |
| 69 | Louise T O'Connor | 26 | Daughter | — | Massachusetts |
| 70 | Joseph L Pendergast | 41 | Head | Boiler Setter | Massachusetts |
| 71 | Dorothy M Pendergast | 39 | Wife | — | Massachusetts |
| 72 | Joseph L Jr Pendergast | 14 | Son | — | Massachusetts |
| 73 | Eugene W Pendergast | 13 | Son | — | Massachusetts |
| 74 | Charles G Brown | 46 | Head | Sorter | Massachusetts |
| 75 | Irene L Brown | 47 | Wife | — | Maine |
| 76 | George B Darling | 53 | Head | Trainman | Massachusetts |
| 77 | Lillian E Darling | 53 | Wife | — | Massachusetts |
| 78 | Henry B Darling | 24 | Son | Packer | Massachusetts |
| 79 | John G Darling | 23 | Son | — | Massachusetts |
| 80 | William Darling | 21 | Son | New Worker | 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)