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Mary Mcmullen — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Mercer-County, New Jersey
Our Model Tree links this Mary Mcmullen across the 1930 and 1940 US Censuses in Mercer-County, New Jersey (XGBoost, ~Confirmed) — first a spouse (b.~1886), then head of a 6-person household.
Age 54
b. ~1886
Female
Spouse
Born: New Jersey
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Mercer-County, New Jersey |
| Surname | McMullen |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | New Jersey |
| 1935 Residence (City) | Hamilton Twp. |
| 1935 Residence (County) | Mercer |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Township / Ward | Hamilton Twp |
| Est. Birth Year | ~1886 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Joseph Mcmullen | Son | — | 28 | ~1912 |
| Frank Mcmullen | Head | — | 51 | ~1889 |
| Rita Mcmullen | Daughter | — | 16 | ~1924 |
| Frank Mcmullen | Son | — | 23 | ~1917 |
| Mary Mcmullen | Spouse | — | 54 | ~1886 |
| Claire Mcmullen | Daughter | — | 27 | ~1913 |
Census Appearances
1930
Mercer, New …
Other, age 44
Mercer, New Jersey · implied b. ~1886 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McMillan |
| Given Name | Mary J |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | New Jersey |
| Age at First Marriage | 24 |
| Father's Birthplace | Germany |
| Mother's Birthplace | New Jersey |
| Can Read/Write | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Mercer-County, New …
Spouse, age 54
Mercer-County, New Jersey · implied b. ~1886 — 6 household members
| Surname | McMullen |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | New Jersey |
| 1935 Residence (City) | Hamilton Twp. |
| 1935 Residence (County) | Mercer |
| Class of Worker | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
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 Mary Mcmullen across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Mcmullen
Spouse · 1940 · age 54 · b. ~1886 · New Jersey
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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 — Mercer-County, New Jersey
Open full size
1940 US Federal Census — Mercer-County, New Jersey
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02356-00885)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Kenneth Mapps | 15 | Son | — | New Jersey |
| 2 | Harry Jr Mapps | 12 | Son | — | New Jersey |
| 3 | Ruth Mapps | 8 | Daughter | — | New Jersey |
| 4 | Martha Mapps | 7 | Daughter | — | New Jersey |
| 5 | Mary Rainier | 73 | Head | — | New Jersey |
| 6 | Benjamin Rainier | 39 | Son | Machinist | New Jersey |
| 7 | Moses Mcmahon | 39 | Head | Machinist | New Jersey |
| 8 | Sylvia Mcmahon | 38 | Wife | — | New Jersey |
| 9 | Francis Mcmahon | 18 | Son | Prentice | New Jersey |
| 10 | Helen Mcmahon | 14 | Daughter | — | New Jersey |
| 11 | Jack Mcmahon | 13 | Son | — | New Jersey |
| 12 | Roger Mcmahon | 9 | Son | — | New Jersey |
| 13 | Evelyn Mcmahon | 4 | Daughter | — | New Jersey |
| 14 | Wayne Mcmahon | 1 | Son | — | New Jersey |
| 15 | Luella Mathews | 63 | Head | General Clerk | New Jersey |
| 16 | Frank Mcmullen | 51 | Head | Foreman | Irish Free State |
| 17 | Mary Mcmullen THIS PERSON | 54 | Wife | — | New Jersey |
| 18 | Joseph Mcmullen | 28 | Son | Cable Worker | New Jersey |
| 19 | Claire Mcmullen | 27 | Daughter | Bookkeeper | New Jersey |
| 20 | Frank Jr. Mcmullen | 23 | Son | General Clerk | New Jersey |
| 21 | Rita Mcmullen | 16 | Daughter | — | New Jersey |
| 22 | Nell Summerville | 59 | Head | — | New Jersey |
| 23 | Mae Summerville | 20 | Daughter | New Worker | New Jersey |
| 24 | Franklin Summerville | 19 | Son | New Worker | New Jersey |
| 25 | Nell Summerville | 18 | Daughter | — | New Jersey |
| 26 | Robert Summerville | 16 | Son | — | New Jersey |
| 27 | Elva Havens | 41 | Head | Janitor'S Helper | Pennsylvania |
| 28 | Frank Rentner | 52 | Head | Plumber | New Jersey |
| 29 | Agnes Rentner | 51 | Wife | — | Pennsylvania |
| 30 | Edward Rentner | 54 | Brother | Machinist | New Jersey |
| 31 | Pinchot Rentner | 47 | Brother In Law | Laborer | New Jersey |
| 32 | Mary Rigelon | 60 | Head | — | Italy |
| 33 | Michael Rigelon | 30 | Son | Laborer | New Jersey |
| 34 | Joseph Rigelon | 27 | Son | Laborer | New Jersey |
| 35 | John Rigelon | 27 | Son | — | New Jersey |
| 36 | Frank Rigelon | 26 | Son | Machinist Helper | New Jersey |
| 37 | Sally Rigelon | 21 | Daughter In Law | — | New Jersey |
| 38 | Jerry Rigelon | 1 | Grand Son | — | New Jersey |
| 39 | Emil Brennaman | 34 | Head | Ropemaker | New Jersey |
| 40 | Katherine Brennaman | 54 | Mother | — | New Jersey |
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)