JM
James Mahoney — 1940 US Census Record
Model Tree available1940 United States Federal Census · Kings-County, New York
Our Model Tree links this James Mahoney across the 1920, 1930 and 1940 US Censuses in Kings-County, New York (XGBoost, ~Confirmed), with identified parents James & James — first a head (b.~1905), then head of a 3-person household.
Age 35
b. ~1905
Male
Head
Born: New York
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Kings-County, New York |
| Surname | Mahoney |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | New York |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | Kings |
| Additional Details | |
| Occupation | Fountain manager |
| Industry | Drug Store |
| Class of Worker | PW |
| Hours Worked | 54 |
| Income (1939) | 1400 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Occupation | Fountain Manager |
| Township / Ward | New York City |
| Est. Birth Year | ~1905 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| James Mahoney | Son | — | 2 | ~1938 |
| James Mahoney | Head | — | 35 | ~1905 |
| Mary Mahoney | Spouse | — | 37 | ~1903 |
Census Appearances
1920
Kings, New …
Son, age 14
Kings, New York · implied b. ~1906 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mahoney |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1930
Kings, New …
Son, age 23
Kings, New York · implied b. ~1907 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mahoney |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Can Read/Write | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
Kings-County, New …
Head, age 35
Kings-County, New York · implied b. ~1905 — 3 household members
| Surname | Mahoney |
| Given Name | James |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | New York |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | Kings |
| Occupation | Fountain manager |
| Industry | Drug Store |
| Class of Worker | PW |
| Hours Worked | 54 |
| Income (1939) | 1400 |
| Highest Grade | No 8 |
| 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 James Mahoney across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father James Mahoney (~0.92 confidence) and father James Mahoney (~0.92 confidence) and mother Sarah Mahoney (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Mahoney
b. ~1869
Source father
● Household
· direct · ~0.92
Father
James Mahoney
b. ~1876
Source father
● Household
· direct · ~0.92
Mother
Sarah Mahoney
b. ~1878
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Mahoney
Head · 1940 · age 35 · b. ~1905 · New York
★ You are viewing this record
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-t0627-02572-00577)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Peter Gioia | 33 | Head | Teacher | New York |
| 2 | Sara Gioia | 33 | Wife | — | New York |
| 3 | Ann Gioia | 5 | Daughter | — | New York |
| 4 | Frank W. De Torres | 67 | Head | Laborer | New York |
| 5 | James O'Hare | 29 | Head | Electric Welder | England |
| 6 | Anna O'Hare | 29 | Wife | — | Pennsylvania |
| 7 | Robert J. O'Hare | 4 | Son | — | New York |
| 8 | James T. O'Hare | 1 | Son | — | New York |
| 9 | James Mahoney THIS PERSON | 35 | Head | Fountain Manager | New York |
| 10 | Mary Mahoney | 37 | Wife | — | New Jersey |
| 11 | James Jr. Mahoney | 2 | Son | — | New York |
| 12 | Irving Edwards | 34 | Head | Detective | New York |
| 13 | Edna Edwards | 34 | Wife | — | Pennsylvania |
| 14 | Irving Jr. Edwards | 12 | Son | — | New York |
| 15 | George Edwards | 9 | Son | — | New York |
| 16 | George Yanez | 45 | Head | Operator | Spain |
| 17 | Virginia Yanez | 22 | Daughter | Stenographer | New York |
| 18 | Amado D'Amico | 50 | Head | Manager | Italy |
| 19 | Mary D'Amico | 50 | Wife | — | Italy |
| 20 | Frank D'Amico | 22 | Son | — | New York |
| 21 | Edward Onidie | 46 | Head | — | Norway |
| 22 | Agnes Onidie | 35 | Wife | Dressmaker | North Dakota |
| 23 | Robert Onidie | 15 | Son | — | Norway |
| 24 | Jose Lopez | 46 | Head | Tug Boat Engineer | Spain |
| 25 | Marie Lopez | 44 | Wife | — | Spain |
| 26 | Josephine Lopez | 19 | Daughter | — | New York |
| 27 | James Ennis | 31 | Head | Linotype Operator | New York |
| 28 | Anna C. Ennis | 33 | Wife | Bookkeeper | New York |
| 29 | Agustine J. Esposito | 34 | Head | Night Watchman | New York |
| 30 | Anna Esposito | 29 | Wife | — | New York |
| 31 | Agustine J. Jr. Esposito | 6 | Son | — | New York |
| 32 | Constance Esposito | 5 | Daughter | — | New York |
| 33 | Anthony Esposito | 36 | Brother | Night Watchman | New York |
| 34 | Joseph Chirico | 26 | Head | Letter Carrier | New York |
| 35 | Ella Chirico | 26 | Wife | — | New York |
| 36 | Norman Seifert | 15 | Brother | — | New York |
| 37 | Frank Malizia | 57 | Head | Bricklayer | Italy |
| 38 | Angelina Malizia | 44 | Wife | Operator | Italy |
| 39 | Joseph Malizia | 23 | Son | — | New York |
| 40 | Josephine Malizia | 6 | Daughter | — | New York |
Pedigree Summary
James
Gen 1 · 3 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)