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Mary Mulligan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Camden-County, New Jersey
Our Model Tree links this Mary Mulligan across the 1930 and 1940 US Censuses in Camden-County, New Jersey (XGBoost, ~Confirmed) — first a daughter (b.~1920), then head of a 7-person household.
Age 20
b. ~1920
Female
Daughter
Born: New Jersey
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Camden-County, New Jersey |
| Surname | Mulligan |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Camden City |
| 1935 Residence (County) | Camden |
| Additional Details | |
| Occupation | Laborer |
| Industry | Radio |
| Class of Worker | PW |
| Hours Worked | 15 |
| Income (1939) | 350 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Occupation | Laborer |
| Township / Ward | Camden City |
| Est. Birth Year | ~1920 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Patricia Mulligan | Daughter | — | 6 | ~1934 |
| Jane Mulligan | Daughter | — | 14 | ~1926 |
| Mary Mulligan | Spouse | — | 46 | ~1894 |
| Eleanor Mulligan | Daughter | — | 9 | ~1931 |
| Mary Mulligan | Daughter | — | 20 | ~1920 |
| John Mulligan | Head | — | 51 | ~1889 |
| Catherine Mulligan | Daughter | — | 25 | ~1915 |
Census Appearances
1930
Camden, New …
Daughter, age 10
Camden, New Jersey · implied b. ~1920 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mulligan |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | New Jersey |
| Can Read/Write | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Camden-County, New …
Daughter, age 20
Camden-County, New Jersey · implied b. ~1920 — 7 household members
| Surname | Mulligan |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Camden City |
| 1935 Residence (County) | Camden |
| Occupation | Laborer |
| Industry | Radio |
| Class of Worker | PW |
| Hours Worked | 15 |
| Income (1939) | 350 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| 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 Mulligan across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Mulligan
Daughter · 1940 · age 20 · b. ~1920 · New Jersey
★ You are viewing this record
Sibling
Eleanor Mulligan
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jane Mulligan
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Mulligan
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patricia Mulligan
Sibling · 1940 · age 6
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 — Camden-County, New Jersey
Open full size
1940 US Federal Census — Camden-County, New Jersey
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02395-00746)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Joseph Keefe | 43 | Head | Clerk | New Jersey |
| 2 | Ethel Keefe | 43 | Wife | — | New Jersey |
| 3 | Mary Keefe | 9 | Daughter | — | New Jersey |
| 4 | Walter L. Donahue | 30 | Head | Foreman | Virginia |
| 5 | Virginia C. Donahue | 22 | Wife | — | Maryland |
| 6 | Cancelled | None | — | — | — |
| 7 | Raymond Bishop | 51 | Head | Guard | Pennsylvania |
| 8 | Rose M. Bishop | 45 | Wife | — | Pennsylvania |
| 9 | Donald R. Bishop | 23 | Son | Machinist | New Jersey |
| 10 | Joseph G. Bishop | 18 | Son | Shipping | New Jersey |
| 11 | John P. Dross | 43 | Brother-in-law | — | Pennsylvania |
| 12 | Ulysses S. West | 43 | Head | Cleaning & Dyeing | Delaware |
| 13 | Kathryn West | 42 | Wife | — | Delaware |
| 14 | Ruth West | 21 | Daughter | Stenographer | New Jersey |
| 15 | Grace West | 17 | Daughter | — | New Jersey |
| 16 | Donald West | 7 | Son | — | New Jersey |
| 17 | Alice Dublin | 48 | Head | — | Pennsylvania |
| 18 | Joseph Dublin | 11 | Son | — | New Jersey |
| 19 | Mary Duckworth | 74 | Mother | — | Pennsylvania |
| 20 | Harry J. Showalter | 52 | Head | Electrician | Pennsylvania |
| 21 | Eva Showalter | 49 | Wife | — | Pennsylvania |
| 22 | Eleanor Showalter | 16 | Daughter | — | Pennsylvania |
| 23 | Lawrence Parker | 38 | Head | Florist | Pennsylvania |
| 24 | Julia Parker | 40 | Wife | — | Pennsylvania |
| 25 | William Finan | 19 | Son | General | Pennsylvania |
| 26 | John Finan | 16 | Son | — | Pennsylvania |
| 27 | Patrick Finan | 13 | Son | — | Pennsylvania |
| 28 | John Mulligan | 51 | Head | Fireman | Pennsylvania |
| 29 | Mary E. Mulligan | 46 | Wife | — | New Jersey |
| 30 | Catherine Mulligan | 25 | Daughter | Laborer | New Jersey |
| 31 | Mary Mulligan THIS PERSON | 20 | Daughter | Laborer | New Jersey |
| 32 | Jane Mulligan | 14 | Daughter | — | New Jersey |
| 33 | Eleanor Mulligan | 9 | Daughter | — | New Jersey |
| 34 | Patricia Mulligan | 6 | Daughter | — | New Jersey |
| 35 | Cancelled | None | — | — | — |
| 36 | James Egan | 57 | Head | Welder | New Jersey |
| 37 | Anna B. Egan | 57 | Wife | — | New Jersey |
| 38 | James R. Egan | 21 | Son | Accounting | New Jersey |
| 39 | William J. Egan | 14 | Son | — | New Jersey |
| 40 | Herman Brier | 38 | Head | Salesman | French-Canada |
Related Census Records
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)