JF
John Flaherty — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Kings-County, New York
Our Model Tree links this John Flaherty across the 1930 and 1940 US Censuses in Kings-County, New York (XGBoost, ~Confirmed) — first a son (b.~1925), then head of a 11-person household.
Age 15
b. ~1925
Male
Son
Born: New York
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Kings-County, New York |
| Surname | Flaherty |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | Kings |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | H-1 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Township / Ward | New York City |
| Est. Birth Year | ~1925 |
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 |
|---|---|---|---|---|
| Cecelia Flaherty | Daughter | — | 14 | ~1926 |
| Michael Flaherty | Son | — | 5 | ~1935 |
| Thomas Flaherty | Head | — | 50 | ~1890 |
| Catherine Flaherty | Daughter | — | 12 | ~1928 |
| Thomas Flaherty | Son | — | 6 | ~1934 |
| Theresa Flaherty | Daughter | — | 8 | ~1932 |
| Patrick Flaherty | Son | — | 18 | ~1922 |
| Margaret Flaherty | Daughter | — | 19 | ~1921 |
| John Flaherty | Son | — | 15 | ~1925 |
| Julia Flaherty | Spouse | — | 48 | ~1892 |
| Mary Flaherty | Daughter | — | 16 | ~1924 |
Census Appearances
1930
Kings, New …
Son, age 5
Kings, New York · implied b. ~1925 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Flaherty |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Home Owned/Rented | No |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
Kings-County, New …
Son, age 15
Kings-County, New York · implied b. ~1925 — 11 household members
| Surname | Flaherty |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | Kings |
| Class of Worker | 0 |
| Highest Grade | H-1 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
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 Flaherty across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Flaherty
Son · 1940 · age 15 · b. ~1925 · New York
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Sibling
Thomas Flaherty
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Flaherty
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Theresa Flaherty
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Flaherty
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Flaherty
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Cecelia Flaherty
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Michael Flaherty
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patrick Flaherty
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 — Kings-County, New York
Open full size
1940 US Federal Census — Kings-County, New York
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02547-00927)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Virginia Flaherty | 27 | Wife | — | Pennsylvania |
| 2 | Mathilda Flaherty | 70 | Head | — | New York |
| 3 | John Driscoll | 40 | Head | Repairman | New York |
| 4 | Faith Driscoll | 38 | Wife | — | New York |
| 5 | Patricia Driscoll | 5 | Daughter | — | New York |
| 6 | John Driscoll | 4 | Son | — | New York |
| 7 | George Slevin | 25 | Nephew | Messenger | New York |
| 8 | Peggy Slevin | 24 | Wife | Shirt Clerk | New York |
| 9 | Severino Garcia | 57 | Head | Superintendent | Spain |
| 10 | Mary Garcia | 48 | Wife | — | Spain |
| 11 | Helen Garcia | 26 | Daughter | Machine Operator | New York |
| 12 | Alfred Montoto | 36 | Son-in-law | Elevator Operator | Spain |
| 13 | Felix Elustondo | 26 | Son-in-law | Pressman | New York |
| 14 | Mabel Elustondo | 24 | Daughter | — | New York |
| 15 | Albert Elustondo | 5 | Son | — | New York |
| 16 | Francisco Vargas | 49 | Lodger | Fireman | Spain |
| 17 | Antonio Rocha | 68 | Head | Laborer | Spain |
| 18 | Dominga Rocha | 55 | Wife | — | Spain |
| 19 | Frank Rocha | 26 | Son | — | New York |
| 20 | Claudio Rocha | 23 | Son | Laborer | New York |
| 21 | Thomas Bropson | 69 | Head | — | New York |
| 22 | Mae Bropson | 45 | Daughter | Operator | New York |
| 23 | William Bropson | 30 | Son | Elevator Operator | New York |
| 24 | James Bropson | 27 | Son | Laborer | New York |
| 25 | Anna Haggerty | 32 | Daughter | — | New York |
| 26 | Arthur Haggerty | 3 | Son | — | New York |
| 27 | Thomas Flaherty | 50 | Head | Crane Runner | New York |
| 28 | Julia Flaherty | 48 | Wife | — | New York |
| 29 | Margaret Flaherty | 19 | Daughter | Clerk | New York |
| 30 | Patrick Flaherty | 18 | Son | — | New York |
| 31 | Mary Flaherty | 16 | Daughter | — | New York |
| 32 | John Flaherty THIS PERSON | 15 | Son | — | New York |
| 33 | Cecelia Flaherty | 14 | Daughter | — | New York |
| 34 | Catherine Flaherty | 12 | Daughter | — | New York |
| 35 | Theresa Flaherty | 8 | Daughter | — | New York |
| 36 | Thomas Flaherty | 6 | Son | — | New York |
| 37 | Michael Flaherty | 5 | Son | — | New York |
| 38 | Dennis Nolan | 36 | Head | Watchman | New York |
| 39 | Julie Nolan | 22 | Wife | — | Irish Free State |
| 40 | Dennis P. Nolan | 9 | Son | — | 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)