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John Mcelroy — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Queens-County, New York
Our Model Tree links this John Mcelroy across the 1930 and 1940 US Censuses in Queens-County, New York (XGBoost, ~Confirmed) — first a son (b.~1923), then head of a 4-person household.
Age 17
b. ~1923
Male
Son
Born: New York
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Queens-County, New York |
| Surname | McElroy |
| Given Name | John M. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | Queens |
| Additional Details | |
| Highest Grade | H 4 |
| 1935 Residence | Same Place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Township / Ward | New York City |
| Est. Birth Year | ~1923 |
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 Mcelroy | Son | — | 17 | ~1923 |
| Charlotte Mcelroy | Daughter | — | 14 | ~1926 |
| Henry Mcelroy | Head | — | 44 | ~1896 |
| Charlotte Mcelroy | Spouse | — | 45 | ~1895 |
Census Appearances
1930
Queens, New …
Son, age 7
Queens, New York · implied b. ~1923 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McAlree |
| Given Name | John R. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New York |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
Queens-County, New …
Son, age 17
Queens-County, New York · implied b. ~1923 — 4 household members
| Surname | McElroy |
| Given Name | John M. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | Queens |
| Highest Grade | H 4 |
| 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 Mcelroy across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Mcelroy
Son · 1940 · age 17 · b. ~1923 · New York
★ You are viewing this record
Sibling
Charlotte Mcelroy
Sibling · 1940 · age 14
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 — Queens-County, New York
Open full size
1940 US Federal Census — Queens-County, New York
Page Contents
35 people indexed on this census page (nara:1940:m-t0627-02735-00387)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Pauline Simkins | 28 | Housemaid | Housemaid | South Carolina |
| 42 | Liston C. Bertram | 40 | Head | Lawyer | Virginia |
| 43 | Elsa Bertram | 37 | Wife | — | Germany |
| 44 | Joyce Bertram | 7 | Daughter | — | New York |
| 49 | Herald H. Whittington | 45 | Head | Salesman | Ohio |
| 50 | Mildred M. Whittington | 44 | Wife | — | Ohio |
| 51 | Ross M. Whittington | 17 | Son | — | Kentucky |
| 52 | Julia K. Whittington | 8 | Daughter | — | Missouri |
| 53 | Bessie Adams | 46 | Servant | House Maid | Ohio |
| 54 | Hugh Willoughby | 47 | Head | Artist | England |
| 55 | Hillary F. Willoughby | 38 | Wife | — | England |
| 56 | Bruce H. Willoughby | 8 | Son | — | New York |
| 57 | Willard Nevins | 49 | Head | Organist | New York |
| 58 | Helen W. Nevins | 40 | Wife | — | New York |
| 59 | Judith Nevins | 14 | Daughter | — | New York |
| 60 | Janet Nevins | 10 | Daughter | — | New York |
| 61 | Edward S. Cowdrick | 56 | Head | Industrial Relations Counsel | Ohio |
| 62 | Nellie A. Cowdrick | 47 | Wife | — | Kansas |
| 63 | Henry M. Mcelroy | 44 | Head | Trade Assn Exec/Executive | New York |
| 64 | Charlotte M. Mcelroy | 45 | Wife | Educational Advisor | New York |
| 65 | John M. Mcelroy THIS PERSON | 17 | Son | — | New York |
| 66 | Charlotte M. Mcelroy | 14 | Daughter | — | New York |
| 67 | Bernice Evans | 38 | Head | Secretary | Pennsylvania |
| 68 | William H. Southworth | 53 | Head | Bank Manager | New York |
| 69 | Katherine Southworth | 49 | Wife | — | New York |
| 70 | Mary A. Southworth | 10 | Daughter | — | New York |
| 71 | Harold A. Gillman | 46 | Head | District Mngr | Wisconsin |
| 72 | Marion R. Gillman | 43 | Wife | — | Wisconsin |
| 73 | Allene Gillman | 11 | Daughter | — | New York |
| 74 | George N. Papanicolaou | 57 | Head | Asst Professor | Greece |
| 75 | Mary A. Papanicolaou | 50 | Wife | Asst Research | Greece |
| 76 | Wilhelmine Sosh | 72 | Servant | Housework | Germany |
| 77 | Esmeralda Allen | 66 | Lodger | — | Romania |
| 78 | Carl Friedman | 66 | Head | Broker | Sweden |
| 79 | Aina M. Friedman | 62 | Wife | Broker | Finland |
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)