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John Mcmullen — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this John Mcmullen across the 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1928), then head of a 10-person household.
Age 12
b. ~1928
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | McMullen |
| Given Name | John P |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | NEWTON |
| 1935 Residence (County) | MIDDLESEX |
| Additional Details | |
| Highest Grade | Yes 4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Newton |
| Est. Birth Year | ~1928 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Phillip Mcmullen | Head | — | 33 | ~1907 |
| Edwin Mcmullen | Other | — | 72 | ~1868 |
| William Mcmullen | Son | — | 8 | ~1932 |
| Barbara Mcmullen | Spouse | — | 32 | ~1908 |
| Ann Mcmullen | Daughter | — | 5 | ~1935 |
| Edwin Mcmullen | Son | — | 4 | ~1936 |
| Phillip Mcmullen | Son | — | 7 | ~1933 |
| John Mcmullen | Son | — | 12 | ~1928 |
| Barbara Mcmullen | Daughter | — | 10 | ~1930 |
| Thomas Mcmullen | Son | — | 1 | ~1939 |
Census Appearances
1930
Middlesex, Massachusetts
Son, age 2
Middlesex, Massachusetts · implied b. ~1928 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | MacMullen |
| Given Name | John P |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Ireland Free State |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Son, age 12
Middlesex-County, Massachusetts · implied b. ~1928 — 10 household members
| Surname | McMullen |
| Given Name | John P |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | NEWTON |
| 1935 Residence (County) | MIDDLESEX |
| Highest Grade | Yes 4 |
| 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 Mcmullen across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Mcmullen
Son · 1940 · age 12 · b. ~1928 · Massachusetts
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Sibling
Barbara Mcmullen
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ann Mcmullen
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Mcmullen
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Phillip Mcmullen
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Mcmullen
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edwin Mcmullen
Sibling · 1940 · age 4
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-t0627-01614-00296)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Catherine Coelli | 7 | Daughter | — | Massachusetts |
| 2 | Stevie Coelli | 5 | Son | — | Massachusetts |
| 3 | Danny Coelli | 3 | Son | — | Massachusetts |
| 4 | Lucy Coelli | 1 | Daughter | — | Massachusetts |
| 5 | Thomas F Murphy | 72 | Head | — | Canada English |
| 6 | Dorothy Murphy | 30 | Daughter | — | Massachusetts |
| 7 | Mary Murphy | 28 | Daughter | — | Massachusetts |
| 8 | Phillip W Mcmullen | 33 | Head | Chauffeur | Massachusetts |
| 9 | Barbara Mcmullen | 32 | Wife | — | Eire |
| 10 | John P Mcmullen THIS PERSON | 12 | Son | — | Massachusetts |
| 11 | Barbara S Mcmullen | 10 | Daughter | — | Massachusetts |
| 12 | William B Mcmullen | 8 | Son | — | Massachusetts |
| 13 | Phillip W Jr Mcmullen | 7 | Son | — | Massachusetts |
| 14 | Ann M Mcmullen | 5 | Daughter | — | Massachusetts |
| 15 | Edwin F Mcmullen | 4 | Son | — | Massachusetts |
| 16 | Thomas M Mcmullen | 1 | Son | — | Massachusetts |
| 17 | Edwin R Mcmullen | 72 | Father | — | Nova Scotia |
| 18 | Herbert J Austin | 37 | Head | Salesman | Massachusetts |
| 19 | Mary D Austin | 32 | Wife | — | Massachusetts |
| 20 | Herbert J Jr Austin | 9 | Son | — | Massachusetts |
| 21 | Barbara M Austin | 8 | Daughter | — | Massachusetts |
| 22 | John F Austin | 2 | Son | — | Florida |
| 23 | Thomas J Maguire | 38 | Head | Postman | Massachusetts |
| 24 | Martha A Maguire | 30 | Wife | — | Nova Scotia |
| 25 | James D Maguire | 12 | Son | — | Nova Scotia |
| 26 | Richard J Maguire | 10 | Son | — | Massachusetts |
| 27 | Martha A Maguire | 2 | Daughter | — | Massachusetts |
| 28 | John Fitzpatrick | 61 | Head | Laborer | Massachusetts |
| 29 | Ellen Fitzpatrick | 54 | Wife | — | Eire |
| 30 | Patrick Lavalle | 50 | Head | Operator | Eire |
| 31 | Mary Lavalle | 48 | Wife | — | Eire |
| 32 | Fredrick F Maguire | 34 | Head | Metal Worker | Massachusetts |
| 33 | Margaret Maguire | 24 | Wife | — | Massachusetts |
| 34 | Mary K Maguire | 2 | Daughter | — | Massachusetts |
| 35 | Margaret F Maguire | 0 | Daughter | — | Massachusetts |
| 36 | Edward Mulrain | 48 | Head | Operator | New Hampshire |
| 37 | Anna Mulrain | 48 | Wife | — | Massachusetts |
| 38 | Arthur Mulrain | 23 | Son | Metal Worker | Massachusetts |
| 39 | James Mulrain | 20 | Son | Tester | Massachusetts |
| 40 | Mary Mulrain | 18 | 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)