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Margaret Brennan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · New-York-County, New York
Our Model Tree links this Margaret Brennan across the 1920, 1930 and 1940 US Censuses in New-York-County, New York (XGBoost, ~Confirmed) — first a head (b.~1873), then head of a 4-person household.
Age 67
b. ~1873
Female
Head
Born: Ireland
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | New-York-County, New York |
| Surname | Brennan |
| Given Name | Margaret |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 67 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | New York |
| Naturalization Status | Naturalized |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Township / Ward | New York City |
| Est. Birth Year | ~1873 |
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 Margaret | Age | Birth yr |
|---|---|---|---|---|
| Margaret Brennan | Head | — | 67 | ~1873 |
| Mary Dillon | Daughter | — | 42 | ~1898 |
| Dorothy Dillon | Other | — | 22 | ~1918 |
| John Dillon | Other | — | 50 | ~1890 |
Census Appearances
Spouse, age 48
New York, New York · implied b. ~1872 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brennan |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Ireland |
| Year of Immigration | 1890 |
| Naturalization Status | Alien |
| 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 | 1918 |
| Birthplace (normalized) | ireland |
1930
New York, …
Spouse, age 57
New York, New York · implied b. ~1873 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brennen |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | Ireland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1889 |
| Age at First Marriage | 28 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
New-York-County, New …
Head, age 67
New-York-County, New York · implied b. ~1873 — 4 household members
| Surname | Brennan |
| Given Name | Margaret |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 67 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | New York |
| Naturalization Status | Naturalized |
| 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 Margaret Brennan across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Margaret Brennan
Head · 1940 · age 67 · b. ~1873 · New York
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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
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1940 US Federal Census — New-York-County, New York
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02659-00271)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Margaret O'Leary | 58 | Head | — | New York |
| 42 | Catherine O'Leary | 31 | Daughter | Stenographer | New York |
| 43 | James Drayler | Trayler | 54 | Boarder | Laborer | New York |
| 44 | James Reagan | 58 | Head | Police Man | Ireland |
| 45 | Mary Reagan | 55 | Wife | — | Ireland |
| 46 | James Reagan | 23 | Son | Clerk | New York |
| 47 | Eleanor Reagan | 16 | Daughter | — | New York |
| 48 | Teresa Reagan | 14 | Daughter | — | New York |
| 49 | Patrick Monahan | 65 | Head | Laborer | Ireland |
| 50 | Mary Monahan | 31 | Daughter | Investigator | New York |
| 51 | Richard Bollander | 28 | Head | Artist | New Jersey |
| 52 | Maia | Maria Tuohy | 65 | Head | Waitress | Ireland |
| 53 | Edward Tuohy | 29 | Son | Clerk | New York |
| 54 | Julia Tuohy | 24 | Daughter | Stenographer | New York |
| 55 | John Young | 66 | Head | Chauffeur | Ireland |
| 56 | Annie Young | 65 | Wife | — | Ireland |
| 57 | Catherine Young | 29 | Daughter | Stenographer | New York |
| 58 | Peter Sakala | 51 | Head | Superintendent | Pennsylvania |
| 59 | Barbara Sakala | 52 | Wife | — | Hungary |
| 60 | Joseph Sovero | Sorero | 48 | Head | Assistant | Hungary |
| 61 | Margaret Brennan THIS PERSON | 67 | Head | — | Ireland |
| 62 | John Dillon | 50 | Son in law | Bartender | Ireland |
| 63 | Mary Dillon | 42 | Daughter | Clerk | New York |
| 64 | Dorothy Dillon | 22 | Grand daughter | — | New York |
| 65 | Winifred Kennedy | 60 | Head | — | Ireland |
| 66 | Catherine Kennedy | 82 | Sister | — | Ireland |
| 67 | Margaret Kennedy | 58 | Sister | House Keeper | Ireland |
| 68 | Agnes Patchen | 40 | Lodger | — | New York |
| 69 | Ann Conlin | 65 | Head | — | New York |
| 70 | Edward J. Conlin | 41 | Son | Police | New York |
| 71 | Emma Conlin | 20 | Daughter in law | — | New York |
| 72 | William O'Brien | 31 | Head | Deputy Collector | New York |
| 73 | Mary B O'Brien | 58 | Mother | — | New Jersey |
| 74 | George O'Brien | 27 | Brother | Book Clerk | New York |
| 75 | Peter Mchugh | 56 | Head | Chauffeur | Ireland |
| 76 | Mary Mchugh | 46 | Wife | — | New York |
| 77 | Helen Mchugh | 23 | Daughter | Secretary | New York |
| 78 | Peter Jr. Mchugh | 22 | Son | Clerk | New York |
| 79 | James Mchugh | 11 | Son | — | New York |
| 80 | Joan Mchugh | 6 | Daughter | — | New York |
Related Census Records
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)