JM
John Monahan — 1940 US Census Record
Model Tree available1940 United States Federal Census · New-York-County, New York
Our Model Tree links this John Monahan across the 1920, 1930 and 1940 US Censuses in New-York-County, New York (XGBoost, ~Confirmed), with identified parents Michael & Katherine — first a head (b.~1908), then head of a 4-person household.
Age 32
b. ~1908
Male
Head
Born: New York
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | New-York-County, New York |
| Surname | Monahan |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | New York |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | New York |
| Additional Details | |
| Occupation | Elevator operator |
| Industry | Life Insurance Co |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1600 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Occupation | Elevator Operator |
| Township / Ward | New York City |
| Est. Birth Year | ~1908 |
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 Monahan | Head | — | 32 | ~1908 |
| Agnes Mclean | Other | — | 13 | ~1927 |
| Arleen Monahan | Daughter | — | ~1940 | |
| Mary Monahan | Spouse | — | 23 | ~1917 |
Census Appearances
1920
New York, …
Son, age 12
New York, New York · implied b. ~1908 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Minahan |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1930
New York, …
Son, age 22
New York, New York · implied b. ~1908 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Minahan |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Salesman |
| Industry | Merchant |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
New-York-County, New …
Head, age 32
New-York-County, New York · implied b. ~1908 — 4 household members
| Surname | Monahan |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | New York |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | New York |
| Occupation | Elevator operator |
| Industry | Life Insurance Co |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1600 |
| 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 John Monahan across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Michael Minahan (~0.92 confidence) and mother Katherine Minahan (~0.92 confidence) and mother Delia Minahan (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Michael Minahan
b. ~1876
Source father
● Household
· direct · ~0.92
Mother
Katherine Minahan
b. ~1882
Source mother
● Household
· direct · ~0.92
Mother
Delia Minahan
b. ~1883
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Monahan
Head · 1940 · age 32 · b. ~1908 · 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-t0627-02663-00862)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Jack Rosenthal | 33 | Head | Proprietor | New York |
| 42 | Malvine Rosenthal | 33 | Wife | Housewife | New York |
| 43 | Dietrich Heins | 52 | Head | Assistant Foreman | Germany |
| 44 | Anna Heins | 72 | Mother | — | Germany |
| 45 | Marguerite Heins | 42 | Sister | Stenographer | New York |
| 46 | Charles Goldbach | 62 | Head | Proprietor | Germany |
| 47 | Agnes Goldbach | 56 | Wife | Housewife | Bohemia |
| 48 | Raymond Meara | 51 | Lodger | Foreman | New York |
| 49 | Anna Compel | 55 | Head | — | Austria |
| 50 | Mary Compel | 31 | Daughter | Office Worker | New York |
| 51 | John Compel | 28 | Son | New Worker | New York |
| 52 | Joseph Compel | 24 | Son | Delivery | New York |
| 53 | Elizabeth Compel | 21 | Daughter | Office Worker | New York |
| 54 | Olga Davenport | 19 | Daughter | — | New York |
| 55 | Elizabeth Davenport | 1 | Granddaughter | — | New York |
| 56 | Thomas Compel | 16 | Son | New Worker | New York |
| 57 | James Flynn | 58 | Head | Assorter | Eire |
| 58 | Mary Flynn | 59 | Wife | Housewife | Eire |
| 59 | Patrick Flynn | 25 | Son | Telephone Clerk | Eire |
| 60 | Eileen Flynn | 19 | Daughter | — | New York |
| 61 | William Vervoordt | 28 | Head | Oilman | Belgium |
| 62 | Philomena Vervoordt | 25 | Wife | Superintendent | Belgium |
| 63 | John Vervoordt | 5 | Son | — | Belgium |
| 64 | John Monahan THIS PERSON | 32 | Head | Elevator Operator | New York |
| 65 | Mary Monahan | 23 | Wife | Housewife | New York |
| 66 | Arleen Monahan | 0 | Daughter | — | New York |
| 67 | Agnes Mclean | 13 | Sister-in-law | — | New York |
| 68 | Thomas Jr. Nelson | 67 | Head | Detective | Eire |
| 69 | Catherine Nelson | 70 | Wife | — | Eire |
| 70 | Thomas Jr. Nelson | 34 | Son | Secretary | New York |
| 71 | Anna Mulgrew | 38 | Daughter | Telephone Operator | New York |
| 72 | Francis Mulgrew | 8 | Grandson | — | New York |
| 73 | James Barstow | 64 | Head | Private Tutor | Maine |
| 74 | Katharine Barstow | 49 | Wife | Remedial Teacher | Massachusetts |
| 75 | James, Jr. Barstow | 20 | Son | Reporter | Massachusetts |
| 76 | Patrick Buckley | 74 | Head | — | Eire |
| 77 | Catherine Buckley | 29 | Niece | Route Clerk | Eire |
| 78 | John Mcmahon | 65 | Head | — | Eire |
| 79 | Margaret Mcmahon | 63 | Wife | Housewife | Eire |
| 80 | Mary Loveland | 74 | Sister | — | Eire |
Pedigree Summary
John
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)