JM
John Mahoney — 1940 US Census Record
Linked across censuses1940 United States Federal Census · New-York-County, New York
Our Model Tree links this John Mahoney across the 1920, 1930 and 1940 US Censuses in New-York-County, New York (XGBoost, ~Confirmed) — first a head (b.~1892), then head of a 3-person household.
Age 48
b. ~1892
Male
Head
Born: Ireland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | New-York-County, New York |
| Surname | Mahoney |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | New York |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Superintendent |
| Industry | Apartment house |
| Class of Worker | PW |
| Hours Worked | 104 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Occupation | Superintendent |
| Township / Ward | New York City |
| Est. Birth Year | ~1892 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| John Mahoney | Head | — | 48 | ~1892 |
| Lucy Mahoney | Son | — | 14 | ~1926 |
| Helen Mahoney | Spouse | — | 55 | ~1885 |
Census Appearances
1920
New York, …
Other, age 27
New York, New York · implied b. ~1893 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mahoney |
| Given Name | John |
| Relationship to Head | Lodger |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Ireland |
| Year of Immigration | 1913 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Chauffeur |
| Industry | Private |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Irish |
| Birth Country | Ireland |
| Year of Naturalization | 1919 |
| Birthplace (normalized) | ireland |
1930
New York, …
Head, age 39
New York, New York · implied b. ~1891 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Mahoney |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1907 |
| Age at First Marriage | 26 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Repairman |
| Industry | Highways |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Home Value / Rent | 30 |
| Radio Set | R |
| Veteran | No |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
New-York-County, New …
Head, age 48
New-York-County, New York · implied b. ~1892 — 3 household members
| Surname | Mahoney |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | New York |
| Naturalization Status | Naturalized |
| Occupation | Superintendent |
| Industry | Apartment house |
| Class of Worker | PW |
| Hours Worked | 104 |
| 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 Mahoney across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Mahoney
Head · 1940 · age 48 · b. ~1892 · 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 — New-York-County, New York
Open full size
1940 US Federal Census — New-York-County, New York
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02657-00395)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Conde Aloni | 46 | Head | Labour | Italy |
| 2 | Lena Aloni | 39 | Wife | Servantwoman | France |
| 3 | Raymond Aloni | 17 | Son | — | New York |
| 4 | Hugo Aloni | 14 | Son | — | New York |
| 5 | Mary Aloni | 12 | Daughter | — | New York |
| 6 | Hanna Driscoll | 64 | Head | Servant | Ireland |
| 7 | Margaret Caldwell | 65 | Head | — | Ireland |
| 8 | Eugene Caldwell | 24 | Son | Clerk | New York |
| 9 | John Mahoney THIS PERSON | 48 | Head | Superintendent | Ireland |
| 10 | Helen Mahoney | 55 | Wife | — | France |
| 11 | Lucy Mahoney | 14 | Son | — | New York |
| 12 | Henry Schadlbaurer | 68 | Head | Artist | Austria |
| 13 | Louise Schadlbaurer | 65 | Wife | — | Austria |
| 14 | Anne Scheel | 24 | Head | — | Germany |
| 15 | Samuel Solstein | 50 | Head | Laundryman | Austria |
| 16 | Anna Solstein | 48 | Wife | — | Austria |
| 17 | June Solstein | 17 | Daughter | New Worker | New York |
| 18 | James T. Krogen | 57 | Head | Mechanical Engineer | Philadelphia |
| 19 | Margaret Krogen | 56 | Wife | — | Philadelphia |
| 20 | James Jr. Krogen | 28 | Son | Fountain Man | New York |
| 21 | George Krogen | 19 | Son | Ass'T Chef | Virginia |
| 22 | Earl Gillery | 67 | Lodger | — | New York |
| 23 | William La Bold | 56 | Lodger | Odd Jobs | Pennsylvania |
| 24 | Robert Davis | 45 | Head | Chauffeur | New York |
| 25 | Sara Davis | 34 | Wife | Ladies Maid | New York |
| 26 | Ismael Inoucal | 47 | Lodger | Chauffeur | Philippine Island |
| 27 | Benjamin Alvarez | 63 | Lodger | Butler | Spain |
| 28 | Edward Coward | 59 | Head | Chauffeur | England |
| 29 | Florence Coward | 55 | Wife | Servant | Connecticut |
| 30 | Patrick Brabany | 34 | Lodger | House Man | Ireland |
| 31 | Lina Langenbaum | 76 | Lodger | — | Germany |
| 32 | Michael Reilly | 64 | Lodger | — | New York |
| 33 | George Frye | 66 | Lodger | — | New York |
| 34 | Herbert Kinsley | 26 | Lodger | Soda Man | New York |
| 35 | Theodore E. Peros | 35 | Lodger | Kitchen Worker | Greece |
| 36 | George Cully | 38 | Lodger | — | New York |
| 37 | Margaret Cahill | 57 | Lodger | — | New York |
| 38 | Frank Kealis | 25 | Lodger | Cook | Pennsylvania |
| 39 | Terence O'Brien | 35 | Lodger | Laborer | Ireland |
| 40 | Frank Laurely | 42 | Lodger | Counterman | Czechoslovakia |
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)