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John Mullins — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this John Mullins across the 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1911), then head of a 7-person household.
Age 29
b. ~1911
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Mullins |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Somerville |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | New Worker |
| Class of Worker | GW |
| Hours Worked | 3 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | New Worker |
| Township / Ward | Somerville |
| Est. Birth Year | ~1911 |
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 |
|---|---|---|---|---|
| Francis Mullins | Son | — | 32 | ~1908 |
| Francis Mullins | Son | — | 27 | ~1913 |
| Robert Mullins | Son | — | 16 | ~1924 |
| John Mullins | Head | — | 63 | ~1877 |
| Edward Mullins | Son | — | 24 | ~1916 |
| Susan Mullins | Spouse | — | 60 | ~1880 |
| John Mullins | Son | — | 29 | ~1911 |
Census Appearances
1930
Suffolk, Massachusetts
Son, age 20
Suffolk, Massachusetts · implied b. ~1910 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mullen |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Ireland |
| Occupation | Shoe worker |
| Industry | Shoe factory |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Son, age 29
Middlesex-County, Massachusetts · implied b. ~1911 — 7 household members
| Surname | Mullins |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Somerville |
| 1935 Residence (County) | Middlesex |
| Occupation | New Worker |
| Class of Worker | GW |
| Hours Worked | 3 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| 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 Mullins across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Mullins
Son · 1940 · age 29 · b. ~1911 · Massachusetts
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Sibling
Robert Mullins
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Mullins
Sibling · 1940 · age 32
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Mullins
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Mullins
Sibling · 1940 · age 27
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-t0627-01702-00868)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Helen B Hayes | 38 | Wife | — | Massachusetts |
| 42 | John Hayes | 7 | Son | — | Massachusetts |
| 43 | James Hayes | 5 | Son | — | Massachusetts |
| 44 | Kevin Hayes | 3 | Son | — | Massachusetts |
| 45 | Hector Degrace | 59 | Head | — | Canada French |
| 46 | Mary Degrace | 53 | Wife | Saleswoman | Canada French |
| 47 | Doris Degrace | 20 | Daughter | New Worker | Massachusetts |
| 48 | Charles Babbin | 41 | Lodger | — | Canada English |
| 49 | Mary Babbin | 57 | Lodger | — | Canada English |
| 50 | Thomas Gauthier | 30 | Head | Meat Cutter | Eire |
| 51 | Lillian Gauthier | 30 | Wife | — | Massachusetts |
| 52 | Daniel Driscoll | 43 | Head | Laborer | Eire |
| 53 | Marie Driscoll | 43 | Wife | — | Eire |
| 54 | Mary Driscoll | 10 | Daughter | — | Massachusetts |
| 55 | Joseph Stapleton | 40 | Head | Longshoreman | Canada English |
| 56 | Mary Stapleton | 31 | Wife | — | Canada English |
| 57 | Cornelius Fitzpatrick | 33 | Lodger | Fireman | Canada English |
| 58 | Margaret Kelleher | 54 | Head | Charwoman | Eire |
| 59 | Catherine Kelleher | 25 | Daughter | Typist | Massachusetts |
| 60 | Timothy Kelleher | 15 | Son | — | Massachusetts |
| 61 | Michael Redane | 48 | Head | Laborer | Eire |
| 62 | Margaret Redane | 50 | Wife | — | Eire |
| 63 | John Redane | 22 | Son | Packer | Massachusetts |
| 64 | Nora Redane | 20 | Daughter | New Worker | Massachusetts |
| 65 | Mary Redane | 17 | Daughter | — | Massachusetts |
| 66 | Joseph Redane | 13 | Son | — | Massachusetts |
| 67 | Edward Sullivan | 33 | Head | Trucker | Massachusetts |
| 68 | Mary Sullivan | 31 | Wife | — | Massachusetts |
| 69 | Ann Marie Sullivan | 5 | Daughter | — | Massachusetts |
| 70 | William J. Sullivan | 1 | Son | — | Massachusetts |
| 71 | John J. Mullins | 63 | Head | Laborer | Eire |
| 72 | Susan Mullins | 60 | Wife | — | Eire |
| 73 | Francis Mullins | 32 | Son | Pulling Glass | Massachusetts |
| 74 | John Mullins THIS PERSON | 29 | Son | New Worker | Massachusetts |
| 75 | Francis Mullins | 27 | Son | New Worker | Massachusetts |
| 76 | Edward Mullins | 24 | Son | Laborer | Massachusetts |
| 77 | Robert Mullins | 16 | Son | — | Massachusetts |
| 78 | People Alves | 43 | Head | Laborer | Portugal |
| 79 | Mercedes Alves | 38 | Wife | — | Portugal |
| 80 | Lucille Alves | 22 | Daughter | Machine Operator | 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)