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John Monahan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · New-York-County, New York
Our Model Tree links this John Monahan across the 1930 and 1940 US Censuses in New-York-County, New York (XGBoost, ~Confirmed) — first a son (b.~1926), then head of a 8-person household.
Age 14
b. ~1926
Male
Son
Born: New York
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | New-York-County, New York |
| Surname | Monahan |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | New York |
| Additional Details | |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Township / Ward | New York City |
| Est. Birth Year | ~1926 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Monahan | Son | — | 14 | ~1926 |
| William Monahan | Son | — | 10 | ~1930 |
| Robert Monahan | Son | — | 12 | ~1928 |
| Mary Nash | Other | — | 70 | ~1870 |
| Elizabeth Monahan | Spouse | — | 42 | ~1898 |
| Thomas Monahan | Son | — | 16 | ~1924 |
| Thomas Monahan | Head | — | 39 | ~1901 |
| Grace Monahan | Daughter | — | 19 | ~1921 |
Census Appearances
1930
New York, …
Son, age 4
New York, New York · implied b. ~1926 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Monahan |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
New-York-County, New …
Son, age 14
New-York-County, New York · implied b. ~1926 — 8 household members
| Surname | Monahan |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | New York |
| Highest Grade | No 6 |
| 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 Monahan across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Monahan
Son · 1940 · age 14 · b. ~1926 · New York
★ You are viewing this record
Sibling
Grace Monahan
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Monahan
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Monahan
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Monahan
Sibling · 1940 · age 12
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 — New-York-County, New York
Open full size
1940 US Federal Census — New-York-County, New York
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-02629-00689)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Edward Jr Uzzi | 5 | Son | — | New York |
| 42 | Anthony Gomer | 46 | Head | Carpenter | Yugoslavia |
| 43 | Ida Gomer | 41 | Wife | — | New York |
| 44 | Lucille Gomer | 18 | Daughter | — | Michigan |
| 45 | Eugene Gomer | 17 | Son | — | Michigan |
| 46 | Anthony Gomer | 15 | Son | — | New York |
| 47 | Thomas Gomer | 14 | Son | — | New York |
| 48 | Carmen Gomer | 12 | Son | — | Michigan |
| 49 | Ruth Gomer | 9 | Daughter | — | New York |
| 50 | Alice Gomer | 6 | Daughter | — | New York |
| 51 | Bernard P. Porte | 47 | Head | Fireman | Spain |
| 52 | Mary Porte | 27 | Wife | — | Pennsylvania |
| 53 | Leo Porte | 7 | Son | — | New York |
| 54 | Clara Porte | 5 | Daughter | — | New York |
| 55 | John Porte | 3 | Son | — | New York |
| 56 | Donald Porte | 2 | Son | — | New York |
| 57 | Bernard Porte | 1 | Son | — | New York |
| 58 | Thomas Monahan | 39 | Head | Foreman | New York |
| 59 | Elizabeth Monahan | 42 | Wife | — | Jersey |
| 60 | Grace Monahan | 19 | Daughter | — | New York |
| 61 | Thomas Monahan | 16 | Son | — | New York |
| 62 | John Monahan THIS PERSON | 14 | Son | — | New York |
| 63 | Robert Monahan | 12 | Son | — | New York |
| 64 | William Monahan | 10 | Son | — | New York |
| 65 | Mary Nash | 70 | Mother-in-law | — | Ireland |
| 66 | Charles Glander | 46 | Head | Mechanic | New York |
| 67 | Mary Glander | 43 | Wife | Inserting | New York |
| 68 | Eddie Glander | 26 | Son | Clerical | New York |
| 69 | Marion Glander | 20 | Daughter | Clerical | New York |
| 70 | Jesus Murama | 48 | Head | — | Spain |
| 71 | Encarnacion Murama | 46 | Wife | — | Spain |
| 72 | Maria Murama | 16 | Daughter | — | New York |
| 73 | Gloria Murama | 9 | Daughter | — | New York |
| 74 | Carmen Delrice Murama | 17 | Daughter | — | New York |
| 75 | Felix Diasparra | 56 | Head | Iceman | Italy |
| 76 | Antoinette Diasparra | 50 | Wife | — | Italy |
| 77 | Frank Diasparra | 20 | Son | Laborer | Italy |
| 78 | Salvatore Diasparra | 16 | Son | — | New York |
| 79 | Amelia Rebolledo | 32 | Head | Making Lamp Shades | Chili |
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)