JH
John Hagan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this John Hagan across the 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1897), then head of a 7-person household.
Age 43
b. ~1897
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Hagan |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Somerville City |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | scrap maker |
| Industry | scrap mfg |
| Class of Worker | PW |
| Hours Worked | 3 |
| Income (1939) | 496 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Scrap Maker |
| Township / Ward | Somerville City |
| Est. Birth Year | ~1897 |
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 |
|---|---|---|---|---|
| Patricia Crowley | Other | — | 17 | ~1923 |
| John Hagan | Son | — | 43 | ~1897 |
| Mary Crowley | Daughter | — | 41 | ~1899 |
| Patrick Hagan | Head | — | 68 | ~1872 |
| Alice Hagan | Daughter | — | 27 | ~1913 |
| Catherine Hagan | Daughter | — | 20 | ~1920 |
| Mary Crowley | Other | — | 21 | ~1919 |
Census Appearances
1930
Middlesex, Massachusetts
Son, age 33
Middlesex, Massachusetts · implied b. ~1897 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hagan |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Free State |
| Mother's Birthplace | Free State |
| Occupation | Soap Maker |
| Industry | Soap Factory |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | Yes WW |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Son, age 43
Middlesex-County, Massachusetts · implied b. ~1897 — 7 household members
| Surname | Hagan |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Somerville City |
| 1935 Residence (County) | Middlesex |
| Occupation | scrap maker |
| Industry | scrap mfg |
| Class of Worker | PW |
| Hours Worked | 3 |
| Income (1939) | 496 |
| Highest Grade | No 8 |
| 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 John Hagan across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Hagan
Son · 1940 · age 43 · b. ~1897 · Massachusetts
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Sibling
Catherine Hagan
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Hagan
Sibling · 1940 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Crowley
Sibling · 1940 · age 41
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-t0627-01702-00686)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Viola P. Price | 41 | wife | — | Massachusetts |
| 2 | Edward J. Price | 22 | son | Waiter | Massachusetts |
| 3 | Viola K. Price | 21 | daughter | Seamstress | Massachusetts |
| 4 | Clinton F. Price | 20 | son | Shipper | Massachusetts |
| 5 | John B. Price | 11 | son | — | Massachusetts |
| 6 | Anna G. Price | 2 | daughter | — | Massachusetts |
| 7 | Isabella F. Price | 0 | daughter | — | Massachusetts |
| 8 | Benjamin N. Towski | 29 | head | Packer | Massachusetts |
| 9 | Lucille B. Towski | 23 | wife | — | Massachusetts |
| 10 | Barbara A. Towski | 0 | daughter | — | Massachusetts |
| 11 | Patrick J. Mcnair | 60 | head | — | Eire |
| 12 | Marion E. Mcnair | 27 | daughter | Clerk | Massachusetts |
| 13 | Theresa M. Mcnair | 26 | daughter | Operator | Massachusetts |
| 14 | Patrick Hagan | 68 | head | Custodian | Eire |
| 15 | John Hagan THIS PERSON | 43 | son | Scrap Maker | Massachusetts |
| 16 | Mary C. Crowley | 41 | daughter | Bookkeeper | Massachusetts |
| 17 | Mary A. Crowley | 21 | grand-d | — | Massachusetts |
| 18 | Patricia A. Crowley | 17 | grand-d | — | Massachusetts |
| 19 | Alice B. Hagan | 27 | daughter | Teacher | Massachusetts |
| 20 | Catherine M. Hagan | 20 | daughter | — | Massachusetts |
| 21 | Daniel J. Coleman | 68 | head | Frt Handler | Eire |
| 22 | Ellen T. Coleman | 63 | wife | — | Eire |
| 23 | Daniel J. Jr. Coleman | 26 | son | Frt Handler | Massachusetts |
| 24 | John J. Gervais | 32 | head | Chauffeur | Massachusetts |
| 25 | Flora J. Gervais | 33 | sister | Packer | Massachusetts |
| 26 | Catherine Gervais | 21 | sister | Saleslady | Massachusetts |
| 27 | James N. Gervais | 23 | brother | Packer | Massachusetts |
| 28 | Patrick Gervais | 15 | brother | — | Eire |
| 29 | Julia T. Gervais | 61 | wife | — | Eire |
| 30 | Charles Aveni | 42 | head | Proprietor | Italy |
| 31 | Filomena Aveni | 32 | wife | — | Italy |
| 32 | Gaetano A. Aveni | 8 | son | — | Massachusetts |
| 33 | Victorice Aveni | 5 | daughter | — | Massachusetts |
| 34 | Angela F. Aveni | 1 | son | — | Massachusetts |
| 35 | Nellie G. Quinn | 59 | head | Cutter | Massachusetts |
| 36 | Peter G. Nademchuk | 30 | head | Automotive Electrician | Russia |
| 37 | Genevieve Nademchuk | 26 | wife | Packer | Massachusetts |
| 38 | Michael J. Foley | 43 | head | Fisherman | Canada-Eng |
| 39 | Esther A. Foley | 42 | wife | — | Canada-Eng |
| 40 | Sadie F. Foley | 16 | 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)