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John Mcgrath — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Essex-County, New Jersey
Our Model Tree links this John Mcgrath across the 1930 and 1940 US Censuses in Essex-County, New Jersey (XGBoost, ~Confirmed) — first a son (b.~1923), then head of a 11-person household.
Age 17
b. ~1923
Male
Son
Born: New Jersey
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Essex-County, New Jersey |
| Surname | McGrath |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Newark City |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same Place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Township / Ward | Newark City |
| Est. Birth Year | ~1923 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Anita Mcgrath | Daughter | — | 9 | ~1931 |
| Catherine Mcgrath | Daughter | — | 14 | ~1926 |
| James Mcgrath | Head | — | 53 | ~1887 |
| Robert Mcgrath | Son | — | 15 | ~1925 |
| Philip Mcgrath | Son | — | 19 | ~1921 |
| Joseph Mcgrath | Son | — | 10 | ~1930 |
| Daniel Mcgrath | Son | — | 13 | ~1927 |
| John Mcgrath | Son | — | 17 | ~1923 |
| James Mcgrath | Son | — | 21 | ~1919 |
| Vincent Mcgrath | Son | — | 6 | ~1934 |
| Anna Mcgrath | Spouse | — | 42 | ~1898 |
Census Appearances
1930
Essex, New …
Son, age 7
Essex, New Jersey · implied b. ~1923 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McGrath |
| Given Name | John E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | Ireland |
| Mother's Birthplace | New Jersey |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Essex-County, New …
Son, age 17
Essex-County, New Jersey · implied b. ~1923 — 11 household members
| Surname | McGrath |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Newark City |
| Income (1939) | 0 |
| Highest Grade | Hs 1 |
| 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 John Mcgrath across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Mcgrath
Son · 1940 · age 17 · b. ~1923 · New Jersey
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Sibling
Daniel Mcgrath
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Mcgrath
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anita Mcgrath
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Mcgrath
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Mcgrath
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Philip Mcgrath
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Vincent Mcgrath
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Mcgrath
Sibling · 1940 · age 21
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 — Essex-County, New Jersey
Open full size
1940 US Federal Census — Essex-County, New Jersey
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02421-00437)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Elizabeth M. Thieleman | 26 | Wife | — | New Jersey |
| 2 | Allen E. Thieleman | 1 | Son | — | New Jersey |
| 3 | John J. Clark | 32 | Head | Assist Foreman-Packing | New Jersey |
| 4 | Mary W. Clark | 28 | Wife | — | New Jersey |
| 5 | Patricia Clark | 8 | Daughter | — | New Jersey |
| 6 | John J. Clark | 2 | Son | — | New Jersey |
| 7 | Frank P. Galleglak|Gallegher | 63 | Head | Wood Patternmaker | New Jersey |
| 8 | Jennie J. Galleglak|Gallegher | 63 | Wife | — | New Jersey |
| 9 | Frank R. Galleglak|Gallegher | 36 | Son | Shipping Clerk | New Jersey |
| 10 | Jane R. Galleglak|Gallegher | 33 | Daughter | Statistical Clerk | New Jersey |
| 11 | Anna Schwartz | 57 | Head | — | Austria |
| 12 | Harry Schwartz | 31 | Son | Chauffeur-Taxi | New Jersey |
| 13 | Isah|Isak Schwartz | 29 | Daughter | Inspector | New Jersey |
| 14 | Nicholas Linarducci | 52 | Head | Handyman | Italy |
| 15 | Selina Linarducci | 57 | Wife | — | Italy |
| 16 | Margaret Linarducci | 33 | Daughter | Sewing Machine Operator | New Jersey |
| 17 | Florence Linarducci | 27 | Daughter | Steam Operator | New Jersey |
| 18 | Josephine Linarducci | 21 | Daughter | File Clerk | New Jersey |
| 19 | Mary Ventola | 36 | Daughter | — | New Jersey |
| 20 | Ida Ventola | 15 | Granddaughter | — | New Jersey |
| 21 | Samuel Ventola | 13 | Grandson | — | New Jersey |
| 22 | Margaret Ventola | 11 | Granddaughter | — | New Jersey |
| 23 | Nicholas Ventola | 8 | Grandson | — | New Jersey |
| 24 | Joseph Linarducci | 84 | Head | — | Italy |
| 25 | James Mcgrath | 53 | Head | Cabinet-Worker | Ireland |
| 26 | Anna Mcgrath | 42 | Wife | — | New Jersey |
| 27 | James Mcgrath | 21 | Son | Doorman | New Jersey |
| 28 | Philip Mcgrath | 19 | Son | Helper'S Helper | New Jersey |
| 29 | John Mcgrath THIS PERSON | 17 | Son | — | New Jersey |
| 30 | Robert Mcgrath | 15 | Son | Keeper | New Jersey |
| 31 | Catherine Mcgrath | 14 | Daughter | — | New Jersey |
| 32 | Daniel Mcgrath | 13 | Son | — | New Jersey |
| 33 | Joseph Mcgrath | 10 | Son | — | New Jersey |
| 34 | Anita Mcgrath | 9 | Daughter | — | New Jersey |
| 35 | Vincent Mcgrath | 6 | Son | — | New Jersey |
| 36 | Walter Stewart | 66 | Head | Platform Porter | Virginia |
| 37 | Lucy Stewart | 51 | Wife | — | Virginia |
| 38 | Annabelle Stewart | 26 | Daughter | Servant | New Jersey |
| 39 | Daisy Stewart | 24 | Daughter | Nursemaid | New Jersey |
| 40 | Laura Stewart | 15 | Daughter | — | New Jersey |
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)