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John Mcgrath — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Kings-County, New York
Our Model Tree links this John Mcgrath across the 1920, 1930 and 1940 US Censuses in Kings-County, New York (XGBoost, ~Confirmed) — first a head (b.~1869), then head of a 4-person household.
Age 71
b. ~1869
Male
Head
Born: Ireland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Kings-County, New York |
| Surname | McGrath |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 71 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | Kings |
| Naturalization Status | Naturalized |
| Additional Details | |
| Hours Worked | 0 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Township / Ward | New York City |
| Est. Birth Year | ~1869 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Mcgrath | Head | — | 71 | ~1869 |
| Catherine Gormley | Other | — | 47 | ~1893 |
| John Mcgrath | Son | — | 17 | ~1923 |
| Catherine Mcgrath | Spouse | — | 68 | ~1872 |
Census Appearances
1920
New York, …
Other, age 54
New York, New York · implied b. ~1866 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McGrath |
| Given Name | John |
| Relationship to Head | Uncle |
| Sex | M |
| Color / Race | White |
| Age | 54 |
| Marital Status | Single |
| Birthplace | Ireland |
| Year of Immigration | 1873 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Proofreader |
| Industry | Publishing House |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Year of Naturalization | 1885 |
| Birthplace (normalized) | ireland |
1930
Kings, New …
Other, age 66
Kings, New York · implied b. ~1864 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McGrath |
| Given Name | John |
| Relationship to Head | Uncle |
| Sex | M |
| Color / Race | White |
| Age | 66 |
| Marital Status | Single |
| Birthplace | Ireland |
| Naturalization Status | First papers filed |
| Year of Immigration | 1878 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Helper |
| Industry | Lumber Yard |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
Kings-County, New …
Head, age 71
Kings-County, New York · implied b. ~1869 — 4 household members
| Surname | McGrath |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 71 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | Kings |
| Naturalization Status | Naturalized |
| Hours Worked | 0 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
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 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage.
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This person
Anchor record
John Mcgrath
Head · 1940 · age 71 · b. ~1869 · New York
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Kings-County, New York
Open full size
1940 US Federal Census — Kings-County, New York
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-02567-00506)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Daisy Commander | 20 | Daughter-in-law | — | North Carolina |
| 2 | Gager Hagen | 41 | Head | Painter | Norway |
| 3 | Althe Hagen | 33 | Wife | — | Norway |
| 4 | Raymond Hagen | 13 | Son | — | New York |
| 5 | George Ancken | 29 | Head | Clerk | New York |
| 6 | William Wollschlaeger | 41 | Head | Silver Finisher | New York |
| 7 | Edna Wollschlaeger | 38 | Wife | — | Connecticut |
| 8 | William Wollschlaeger | 15 | Son | — | Connecticut |
| 9 | Dagmar Carlson | 35 | Wife | House Maid | Sweden |
| 10 | Cecil Smith | 63 | Head | Stevedore | Denmark |
| 11 | Anna Smith | 63 | Wife | — | Sweden |
| 12 | Florence Smith | 23 | Daughter | — | New York |
| 13 | Oscar Low | 46 | Lodger | Waiter | Norway |
| 14 | Walter John Wolters | 20 | Lodger | Stock Clerk | New York |
| 15 | George Fred Miller | 21 | Lodger | Stock Clerk | New York |
| 16 | Eivind Bottolfsen | 41 | Head | Tank Cleaner | Norway |
| 17 | Julia Bottolfsen | 41 | Wife | — | Norway |
| 18 | John Mcgrath THIS PERSON | 71 | Head | — | Ireland |
| 19 | John J. Mcgrath | 17 | Son | New Worker | New York |
| 20 | Catherine Mcgrath | 68 | Wife | — | Ireland |
| 21 | Catherine Gormley | 47 | Servant | House Maid | Ireland |
| 22 | James Tynion | 38 | Head | Lawyer | New York |
| 23 | Louise Tynion | 42 | Wife | — | New York |
| 24 | James Tynion | 16 | Son | — | New York |
| 25 | Donald Tynion | 15 | Son | — | New York |
| 26 | Louise Tynion | 14 | Daughter | — | New York |
| 27 | George Hughes | 48 | Head | Houseman | Mass |
| 28 | Catherine Hughes | 49 | Wife | — | Mass |
| 29 | John Hughes | 24 | Son | Porter | Mass |
| 30 | Louise Hughes | 22 | Daughter | Stenographer | Mass |
| 31 | George Hughes | 19 | Son | Truck Driver | Mass |
| 32 | Mathias Bader | 41 | Head | Proprietor | Germany |
| 33 | Rose Bader | 37 | Wife | Proprietor | Germany |
| 34 | Rose Bader | 13 | Daughter | — | New York |
| 35 | Dora Olsen | 43 | Servant | House Maid | Germany |
| 36 | Selman Gulliksen | 30 | Head | Laborer | Norway |
| 37 | Marie Gulliksen | 26 | Wife | — | Norway |
| 38 | Anker Gulliksen | 2 | Son | — | New York |
| 39 | Hans Braadland | 43 | Lodger | Carpenter | Norway |
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)