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Mary Monahan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Bronx-County, New York
Our Model Tree links this Mary Monahan across the 1900, 1910, 1920, 1930 and 1940 US Censuses in Bronx-County, New York (XGBoost, ~Confirmed) — first a head (b.~1865), then head of a 3-person household.
Age 75
b. ~1865
Female
Head
Born: Ireland
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Bronx-County, New York |
| Surname | Monahan |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 75 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| 1935 Residence (City) | N.Y. |
| 1935 Residence (County) | Bronx |
| Naturalization Status | Naturalized |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Township / Ward | Ny |
| Est. Birth Year | ~1865 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Catherine Monahan | Daughter | — | 28 | ~1912 |
| Anna Monahan | Daughter | — | 30 | ~1910 |
| Mary Monahan | Head | — | 75 | ~1865 |
Census Appearances
1900
Kings, New …
Other, age 32
Kings, New York · implied b. ~1868 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Monohan |
| Given Name | Mary |
| Relationship to Head | Sister |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Ireland |
| Birth Month | Nov |
| Birth Year | 1868 |
| Year of Immigration | 1889 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1910
Kings, New …
Spouse, age 45
Kings, New York · implied b. ~1865 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Monehan |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Ireland |
| Years Married | 26 |
| Children Born | 12 |
| Children Living | 5 |
| Year of Immigration | 1888 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | none |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1920
Kings, New …
Spouse, age 55
Kings, New York · implied b. ~1865 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Monahan |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | Ireland |
| Year of Immigration | 1887 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Year of Naturalization | 1900 |
| Birthplace (normalized) | ireland |
1930
Kings, New …
Spouse, age 64
Kings, New York · implied b. ~1866 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Monahan |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 64 |
| Marital Status | Married |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1900 |
| Age at First Marriage | 22 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
Bronx-County, New …
Head, age 75
Bronx-County, New York · implied b. ~1865 — 3 household members
| Surname | Monahan |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 75 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| 1935 Residence (City) | N.Y. |
| 1935 Residence (County) | Bronx |
| Naturalization Status | Naturalized |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| 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 Mary Monahan across 5 US Census years (1900, 1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Monahan
Head · 1940 · age 75 · b. ~1865 · 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 — Bronx-County, New York
Open full size
1940 US Federal Census — Bronx-County, New York
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02491-00570)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Gertrude Kendell | 24 | Wife | Clerk | New York |
| 42 | Loretta Kendell | 38 | Head | Secretary | New York |
| 43 | Ida Connor | 75 | Head | — | New York |
| 44 | James Robinson | 42 | Head | Patrolman | Massachusetts |
| 45 | Ruth Robinson | 37 | Wife | — | Pennsylvania |
| 46 | Max Herzog | 40 | Head | Medical Doctor | Germany |
| 47 | Martha Herzog | 36 | Wife | Beautician | Germany |
| 48 | Mary Monahan THIS PERSON | 75 | Head | — | Ireland |
| 49 | Anna Monahan | 30 | Daughter | Clerk | New York |
| 50 | Catherine Monahan | 28 | Daughter | Bookkeeper | New York |
| 51 | David Byron | 28 | Head | Maintenance | New York |
| 52 | Catherine Byron | 30 | Wife | Waitress | Irish Free State |
| 53 | Joseph Feathers | 25 | Head | Clerk | New York |
| 54 | Vera Feathers | 24 | Wife | Clerk | New York |
| 55 | Jeanette Morrissey | 61 | Head | Sales Lady | Massachusetts |
| 56 | Walter Morrissey | 25 | Son | Architect Draftsman | Massachusetts |
| 57 | Cancelled | None | — | — | — |
| 58 | James Breslin | 35 | Head | Painter | Scotland |
| 59 | Georgina Breslin | 36 | Wife | — | Scotland |
| 60 | John Breslin | 13 | Son | — | Scotland |
| 61 | Lois Jean Breslin | 5 | Daughter | — | New York |
| 62 | Michael Dwyer | 38 | Head | Mechanic | Irish Free State |
| 63 | Margaret Dwyer | 36 | Wife | — | Irish Free State |
| 64 | Thomas Dwyer | 5 | Son | — | New York |
| 65 | William Dwyer | 3 | Son | — | New York |
| 66 | Annie Higgins | 73 | Head | — | Irish Free State |
| 67 | Bridget Higgins | 42 | Daughter | Corset Operator | New York |
| 68 | Michael Higgins | 39 | Son | Laborer - Sign Co. | New York |
| 69 | Daniel Higgins | 34 | Son | Laborer | New York |
| 70 | Charles Liefert | 34 | Head | Baker | New York |
| 71 | Margaret Liefert | 31 | Wife | Packer | Scotland |
| 72 | Joseph Gilchrist | 69 | Head | Electrician | New York |
| 73 | Mary Gilchrist | 67 | Wife | — | Irish Free State |
| 74 | Joseph Hillian | 65 | Head | Pier Superintendent | Ohio |
| 75 | Katherine Hillian | 59 | Wife | — | New York |
| 76 | James P. Watson | 60 | Head | Machinist | New York |
| 77 | Margaret Watson | 53 | Wife | — | New York |
| 78 | James Jr. Watson | 23 | Son | Printer Helper | New York |
| 79 | Margaret Watson | 20 | Daughter | — | New York |
| 80 | Robert W. Mchale | 46 | Head | Pattern Maker | Pennsylvania |
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)