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Margaret Mcgrath — 1940 US Census Record
Model Tree available1940 United States Federal Census · Hudson-County, New Jersey
Our Model Tree links this Margaret Mcgrath across the 1920, 1930 and 1940 US Censuses in Hudson-County, New Jersey (XGBoost, ~Confirmed), with identified parents Jeremiah & Jeremiah — first a daughter (b.~1918), then head of a 6-person household.
Age 22
b. ~1918
Female
Daughter
Born: New Jersey
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Hudson-County, New Jersey |
| Surname | McGrath |
| Given Name | Margaret |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Jersey City |
| 1935 Residence (County) | Hudson |
| Additional Details | |
| Occupation | Comptometer |
| Industry | Natl Grocery |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 704 |
| Highest Grade | C 4 |
| 1935 Residence | Same house |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Occupation | Comptometer |
| Township / Ward | Jersey City |
| Est. Birth Year | ~1918 |
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 Margaret | Age | Birth yr |
|---|---|---|---|---|
| Jeremiah Mcgrath | Head | — | 53 | ~1887 |
| Helen Mcgrath | Daughter | — | 19 | ~1921 |
| Margaret Mcgrath | Daughter | — | 22 | ~1918 |
| Jeremiah Mcgrath | Son | — | 17 | ~1923 |
| Margaret Mcgrath | Spouse | — | 50 | ~1890 |
| Clara Mcgrath | Daughter | — | 24 | ~1916 |
Census Appearances
1920
Hudson, New …
Daughter, age 1
Hudson, New Jersey · implied b. ~1919 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McGrath |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1930
Hudson, New …
Daughter, age 11
Hudson, New Jersey · implied b. ~1919 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McGrath |
| Given Name | Margaret M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Can Read/Write | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Hudson-County, New …
Daughter, age 22
Hudson-County, New Jersey · implied b. ~1918 — 6 household members
| Surname | McGrath |
| Given Name | Margaret |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Jersey City |
| 1935 Residence (County) | Hudson |
| Occupation | Comptometer |
| Industry | Natl Grocery |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 704 |
| Highest Grade | C 4 |
| 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 Margaret Mcgrath across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Jeremiah Mcgrath (~0.92 confidence) and father Jeremiah Mcgrath (~0.92 confidence) and mother Margaret Mcgrath (~0.92 confidence) and mother Margaret Mcgrath (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Jeremiah Mcgrath
b. ~1883
Source father
● Household
· direct · ~0.92
Father
Jeremiah Mcgrath
b. ~1887
Source father
● Household
· direct · ~0.92
Mother
Margaret Mcgrath
b. ~1890
Source mother
● Household
· direct · ~0.92
Mother
Margaret Mcgrath
b. ~1891
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Margaret Mcgrath
Daughter · 1940 · age 22 · b. ~1918 · New Jersey
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Sibling
Helen Mcgrath
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jeremiah Mcgrath
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Clara Mcgrath
Sibling · 1940 · age 24
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-t0627-02408-00358)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Antoinette Wasco | 26 | wife | — | New Jersey |
| 42 | Thomas Traecker | 40 | Head | Chauffeur | New York |
| 43 | Florence Traecker | 40 | wife | — | New York |
| 44 | Florence Traecker | 18 | daughter | Inspecting | New Jersey |
| 45 | Mary Traecker | 16 | daughter | — | New Jersey |
| 46 | Thomas Traecker | 14 | son | — | New Jersey |
| 47 | Claire Traecker | 10 | daughter | — | New Jersey |
| 48 | Catherine Traecker | 6 | daughter | — | New Jersey |
| 49 | Walter Lacy | 51 | Head | Electrician | New York |
| 50 | Lena Lacy | 43 | wife | — | New York |
| 51 | Grace Lacy | 21 | daughter | Elec Bulb Tester | New York |
| 52 | Raymond Lacy | 20 | son | Packer | New York |
| 53 | — | None | — | — | — |
| 54 | John Hamer | 30 | Head | Mill Foreman | New Jersey |
| 55 | Dorothy Hamer | 23 | wife | — | New Jersey |
| 56 | Shirley Hamer | 6 | daughter | — | New Jersey |
| 57 | Jeremiah Mcgrath | 53 | Head | Clerk | New Jersey |
| 58 | Margaret Mcgrath | 50 | wife | — | New Jersey |
| 59 | Clara Mcgrath | 24 | daughter | Factory Hand | New Jersey |
| 60 | Margaret Mcgrath THIS PERSON | 22 | daughter | Comptometer | New Jersey |
| 61 | Helen Mcgrath | 19 | daughter | Cosmetic Hand | New Jersey |
| 62 | Jeremiah Mcgrath | 17 | son | Bus Boy | New Jersey |
| 63 | Martin Kluge | 59 | Head | Shipping Clerk | New Jersey |
| 64 | Minnie Kluge | 58 | wife | — | New Jersey |
| 65 | Mildred Kluge | 22 | daughter | Leather Painter | New Jersey |
| 66 | Edmund Usowicz | 26 | Head | Mixer | New Jersey |
| 67 | Marion Usowicz | 24 | wife | Waitress | New Jersey |
| 68 | Wallace Usowicz | 4 | son | — | New Jersey |
| 69 | Edward Wrenn | 34 | Head | Clerk | New Jersey |
| 70 | Agatha Wrenn | 30 | wife | Stenographer | New Jersey |
| 71 | George Mayer | 38 | Head | Foreman | New Jersey |
| 72 | Ruth Mayer | 28 | wife | — | New Jersey |
| 73 | Ruth Mayer | 4 | daughter | — | New Jersey |
| 74 | Frank Scarbo | 44 | Head | Automobile Mechanic | New Jersey |
| 75 | Jennie Scarbo | 34 | wife | — | New York |
| 76 | Beatrice Scarbo | 19 | daughter | — | New Jersey |
| 77 | Elsie Scarbo | 16 | daughter | — | New Jersey |
| 78 | Anna Scarbo | 14 | daughter | — | New Jersey |
| 79 | Costant Scarbo | 12 | son | — | New Jersey |
| 80 | Eleanor Scarbo | 11 | daughter | — | New Jersey |
Pedigree Summary
Margaret + 3 siblings
Gen 1 · 4 parents
~0.92
Max depth 4 (1900–1950 window)
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)