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James Mcgrath — 1940 US Census Record
Model Tree available1940 United States Federal Census · Essex-County, New Jersey
Our Model Tree links this James Mcgrath across the 1920, 1930 and 1940 US Censuses in Essex-County, New Jersey (XGBoost, ~Confirmed), with identified parents Katherine & Thomas — first a son (b.~1915), then head of a 5-person household.
Age 25
b. ~1915
Male
Son
Born: New Jersey
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Essex-County, New Jersey |
| Surname | McGrath |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Bloomfield Town |
| 1935 Residence (County) | Essex |
| Additional Details | |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Township / Ward | Bloomfield Town |
| Est. Birth Year | ~1915 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Rita Mcgrath | Daughter | — | 21 | ~1919 |
| Katherine Mcgrath | Head | — | 56 | ~1884 |
| Woodruff Mcgrath | Son | — | 23 | ~1917 |
| John Mcgrath | Son | — | 18 | ~1922 |
| James Mcgrath | Son | — | 25 | ~1915 |
Census Appearances
1920
Essex, New …
Son, age 3
Essex, New Jersey · implied b. ~1917 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McGrath |
| Given Name | James F |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | Ireland |
| Mother Tongue | English |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1930
Essex, New …
Son, age 14
Essex, New Jersey · implied b. ~1916 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McGrath |
| Given Name | James F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | Ireland |
| Can Read/Write | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Essex-County, New …
Son, age 25
Essex-County, New Jersey · implied b. ~1915 — 5 household members
| Surname | McGrath |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Bloomfield Town |
| 1935 Residence (County) | Essex |
| 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 James Mcgrath across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Katherine Mcgrath (~0.92 confidence) and father Thomas Mcgrath (~0.92 confidence) and father Thomas Mcgrath (~0.92 confidence) and mother Marie Mcgrath (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Katherine Mcgrath
b. ~1884
Source mother
● Household
· direct · ~0.92
Father
Thomas Mcgrath
b. ~1886
Source father
● Household
· direct · ~0.92
Father
Thomas Mcgrath
b. ~1886
Source father
● Household
· direct · ~0.92
Mother
Marie Mcgrath
b. ~1890
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Mcgrath
Son · 1940 · age 25 · b. ~1915 · New Jersey
★ You are viewing this record
Sibling
Woodruff Mcgrath
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rita Mcgrath
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Mcgrath
Sibling · 1940 · age 18
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-t0627-02330-00046)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Richard Badrozni | 9 | Son | — | New Jersey |
| 42 | Estelle Wirkoskis | 34 | Sister | Operator | New Jersey |
| 43 | George Kisch | 38 | Head | Butter & Cheese | New Jersey |
| 44 | Florence Kisch | 35 | Wife | — | New Jersey |
| 45 | Alice Lang | 48 | Head | Laundress | New Jersey |
| 46 | Chas. Lang | 18 | Son | Stamper | New Jersey |
| 47 | Patrick Kelly | 44 | Lodger | Pullman Porter | Ireland |
| 48 | William Gohanowski | 47 | Head | — | Poland |
| 49 | Victoria Gohanowski | 47 | Wife | — | Poland |
| 50 | Edward Gohanowski | 25 | Son | Porter | New Jersey |
| 51 | Raymond Gohanowski | 20 | Son | — | New Jersey |
| 52 | John Holgate | 33 | Head | Bus Driver | New Jersey |
| 53 | Marie Holgate | 29 | Wife | Trimmer | New Jersey |
| 54 | John Holgate | 10 | Son | — | New Jersey |
| 55 | Irene Holgate | 8 | Daughter | — | New Jersey |
| 56 | Robert Unsele | 52 | Head | Gardener | Germany |
| 57 | Marie Unsele | 49 | Wife | Housework | Germany |
| 58 | Robert Jr. Unsele | 15 | Son | — | New Jersey |
| 59 | Jacob Molitor | 39 | Head | Pharmacist | New Jersey |
| 60 | Rita Molitor | 32 | Wife | — | New Jersey |
| 61 | Hazel Molitor | 5 | Daughter | — | New Jersey |
| 62 | Katherine Mcgrath | 56 | Head | Adjuster-Electric | New Jersey |
| 63 | James Mcgrath THIS PERSON | 25 | Son | — | New Jersey |
| 64 | Woodruff Mcgrath | 23 | Son | Adjuster-Electric | New Jersey |
| 65 | Rita Mcgrath | 21 | Daughter | Clerk-Typist | New Jersey |
| 66 | John Mcgrath | 18 | Son | A. A. W. | New Jersey |
| 67 | Anthony Schafer | 38 | Head | Bus Driver | New Jersey |
| 68 | Margaret Schafer | 38 | Wife | — | New Jersey |
| 69 | Anthony Schafer | 14 | Son | — | New Jersey |
| 70 | Joseph Schafer | 13 | Son | — | New Jersey |
| 71 | George Schafer | 12 | Son | — | New Jersey |
| 72 | Louis Schwerzmann | 64 | Head | Butcher | New York |
| 73 | Margaret Schwerzmann | 77 | Wife | — | England |
| 74 | William L. Schwerzmann | 40 | Son | Printer | New York |
| 75 | Anna Schwerzmann | 40 | Daughter-in-law | — | Pennsylvania |
| 76 | Clara Schwerzmann | 21 | Granddaughter | New Worker | New Jersey |
| 77 | Anthony Pizynony | 46 | Head | Moulder | Poland |
| 78 | Sophie Pizynony | 34 | Wife | — | Poland |
| 79 | Edward Pizynony | 9 | Son | — | New Jersey |
| 80 | Walter Pizynony | 3 | Son | — | New Jersey |
Pedigree Summary
James + 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)