MM
Mary Mulligan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Hudson-County, New Jersey
Our Model Tree links this Mary Mulligan across the 1930 and 1940 US Censuses in Hudson-County, New Jersey (XGBoost, ~Confirmed) — first a daughter (b.~1920), then head of a 10-person household.
Age 20
b. ~1920
Female
Daughter
Born: New Jersey
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Hudson-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) | Town of West New York |
| 1935 Residence (County) | Hudson |
| Additional Details | |
| Occupation | Trimmer |
| Industry | Mfg Wallets |
| Class of Worker | PW |
| Hours Worked | 65 |
| Income (1939) | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Occupation | Trimmer |
| Township / Ward | Town Of West New York |
| 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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| John Mulligan | Head | — | 44 | ~1896 |
| Joseph Mulligan | Son | — | 13 | ~1927 |
| Mary Mulligan | Daughter | — | 20 | ~1920 |
| James Mulligan | Son | — | 9 | ~1931 |
| Alma Mulligan | Spouse | — | 43 | ~1897 |
| Margaret Mulligan | Daughter | — | 11 | ~1929 |
| Thomas Mulligan | Son | — | 18 | ~1922 |
| Anne Mulligan | Daughter | — | 16 | ~1924 |
| John Mulligan | Son | — | 22 | ~1918 |
| William Mulligan | Son | — | 6 | ~1934 |
Census Appearances
1930
Hudson, New …
Daughter, age 9
Hudson, New Jersey · implied b. ~1921 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mulligan |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | Free State Ireland |
| Mother's Birthplace | New Jersey |
| Occupation | none |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Hudson-County, New …
Daughter, age 20
Hudson-County, New Jersey · implied b. ~1920 — 10 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) | Town of West New York |
| 1935 Residence (County) | Hudson |
| Occupation | Trimmer |
| Industry | Mfg Wallets |
| Class of Worker | PW |
| Hours Worked | 65 |
| Income (1939) | 0 |
| Highest Grade | Hs 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
Joseph Mulligan
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Mulligan
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Mulligan
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Mulligan
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Mulligan
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Mulligan
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anne Mulligan
Sibling · 1940 · age 16
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 — Hudson-County, New Jersey
Open full size
1940 US Federal Census — Hudson-County, New Jersey
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02354-00243)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Florence Larson | 35 | Wife | — | New Jersey |
| 42 | Robert Larson | 10 | Son | — | New Jersey |
| 43 | Joy Larson | 6 | Son | — | New Jersey |
| 44 | Carl Nelson | 30 | Brother in law | Adjustment Clerk | New Jersey |
| 45 | Einer Nelson | 29 | Brother in law | Loader | New Jersey |
| 46 | Boyer Anderson | 63 | Head | Carpenter | Sweden |
| 47 | Ruth Anderson | 18 | Daughter | Creaser | New Jersey |
| 48 | Albert Schutz | 71 | Head | Porter | New York |
| 49 | Florence Schutz | 72 | Wife | — | New York |
| 50 | Charles Schutz | 50 | Son | Tie Cutter | New York |
| 51 | Lillian Keller | 33 | Daughter | Dressmaker | New York |
| 52 | Dorothy Keller | 15 | Granddaughter | — | New Jersey |
| 53 | Barbara Keller | 11 | Granddaughter | — | New Jersey |
| 54 | Morris Klieger | 55 | Head | Rabbi | Poland |
| 55 | Jennie Klieger | 49 | Wife | — | Poland |
| 56 | Florence Klieger | 21 | Daughter | Cashier | Poland |
| 57 | Herman Klieger | 18 | Son | Shipping Clerk | Poland |
| 58 | Beatrice Klieger | 11 | Daughter | — | Ohio |
| 59 | Gertrude Klieger | 7 | Daughter | — | New York |
| 60 | Edward Mc Gill | 65 | Head | Janitor | New York |
| 61 | John Mulligan | 44 | Head | Shipping Clerk | New Jersey |
| 62 | Alma Mulligan | 43 | Wife | — | New Jersey |
| 63 | John Mulligan | 22 | Son | Butcher | New Jersey |
| 64 | Mary Mulligan THIS PERSON | 20 | Daughter | Trimmer | New Jersey |
| 65 | Thomas Mulligan | 18 | Son | Porter | New Jersey |
| 66 | Anne Mulligan | 16 | Daughter | Shuttler | New Jersey |
| 67 | Joseph Mulligan | 13 | Son | — | New Jersey |
| 68 | Margaret Mulligan | 11 | Daughter | — | New Jersey |
| 69 | James Mulligan | 9 | Son | — | New Jersey |
| 70 | William Mulligan | 6 | Son | — | New York |
| 71 | Arthur Jacobson | 42 | Head | Proprietor | New Jersey |
| 72 | Gertie Jacobson | 42 | Wife | — | New Jersey |
| 73 | Anton Larson | 71 | Head | — | Sweden |
| 74 | Gertrude Larson | 72 | Wife | — | Sweden |
| 75 | Olaf Johnson | 59 | Brother | Carpenter | Sweden |
| 76 | William Lully | 50 | Head | Auto Mechanic | New York |
| 77 | Emily Lully | 48 | Wife | Starcher | New York |
| 78 | Christina Haas | 75 | Mother in law | — | Germany |
| 79 | Joseph Federico | 39 | Head | Auto Mechanic | Italy |
| 80 | Teresa Federico | 33 | Wife | — | New York |
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)