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Margaret Brennan — 1940 US Census Record
Model Tree available1940 United States Federal Census · Essex-County, New Jersey
Our Model Tree links this Margaret Brennan across the 1910, 1920, 1930 and 1940 US Censuses in Essex-County, New Jersey (XGBoost, ~Confirmed), with identified parents Patrick & Patrick — first a spouse (b.~1907), then head of a 4-person household.
Age 33
b. ~1907
Female
Spouse
Born: New Jersey
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Essex-County, New Jersey |
| Surname | Brennan |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | New Jersey |
| 1935 Residence (City) | Orange City |
| 1935 Residence (County) | Essex |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Township / Ward | Orange City |
| Est. Birth Year | ~1907 |
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 |
|---|---|---|---|---|
| Richard Brennan | Other | — | 30 | ~1910 |
| Margaret Brennan | Spouse | — | 33 | ~1907 |
| Margaret Brennan | Daughter | — | 2 | ~1938 |
| Cornelius Brennan | Head | — | 37 | ~1903 |
Census Appearances
1910
Essex, New …
Daughter, age 3
Essex, New Jersey · implied b. ~1907 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brennan |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1920
Essex, New …
Daughter, age 13
Essex, New Jersey · implied b. ~1907 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brennan |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New York |
| Occupation | Scholar |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1930
Essex, New …
Daughter, age 23
Essex, New Jersey · implied b. ~1907 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brennan |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New York |
| Occupation | Bookkeeper |
| Industry | Insurance |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Essex-County, New …
Spouse, age 33
Essex-County, New Jersey · implied b. ~1907 — 4 household members
| Surname | Brennan |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | New Jersey |
| 1935 Residence (City) | Orange City |
| 1935 Residence (County) | Essex |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
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 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Patrick Brennan (~0.92 confidence) and father Patrick Brennan (~0.92 confidence) and mother Mona Brennan (~0.92 confidence) and mother Nora Brennan (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Patrick Brennan
b. ~1875
Source father
● Household
· direct · ~0.92
Father
Patrick Brennan
b. ~1875
Source father
● Household
· direct · ~0.92
Mother
Mona Brennan
b. ~1876
Source mother
● Household
· direct · ~0.92
Mother
Nora Brennan
b. ~1876
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Margaret Brennan
Spouse · 1940 · age 33 · b. ~1907 · New Jersey
★ 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 — Essex-County, New Jersey
Open full size
1940 US Federal Census — Essex-County, New Jersey
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02339-00875)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Joseph Wittelshofer | 64 | Head | Laborer | Germany |
| 2 | George Wittelshofer | 29 | Son | Carpenter | New Jersey |
| 3 | Jacob Stein | 36 | Son-in-law | Carpenter | Holland |
| 4 | Mabel Stein | 27 | Daughter | — | New Jersey |
| 5 | Richard Stein | 10 | Grandson | — | New Jersey |
| 6 | Douglas Stein | 8 | Grandson | — | New Jersey |
| 7 | Joseph F. Mahoney | 40 | Head | Foreman | Massachusetts |
| 8 | Jessie Mahoney | 35 | Wife | — | New York |
| 9 | Patricia Mahoney | 12 | Daughter | — | New Jersey |
| 10 | Void Void | None | Void | Void | Void |
| 11 | Void Void | None | Void | Void | Void |
| 12 | Void Void | None | Void | Void | Void |
| 13 | Starting Burnside St. Completed Burnside St. | None | Void | Void | Void |
| 14 | Joseph F. Keans | 63 | Head | Mason | New Jersey |
| 15 | Mary R. Keans | 72 | Sister | — | New Jersey |
| 16 | Nellie T. Keans | 67 | Sister | Dress Maker | New Jersey |
| 17 | Joseph B. Keans | 30 | Son | — | New Jersey |
| 18 | Linda Millock | 26 | Head | — | New Jersey |
| 19 | Norman Millock | 31 | Husband | Carpenter | New Jersey |
| 20 | Lillian Smith | 15 | Sister-in-law | — | New Jersey |
| 21 | Alice Dougherty | 67 | Head | Dress Maker | New Jersey |
| 22 | Elizabeth Dougherty | 64 | Wife | — | New Jersey |
| 23 | Luella Church | 38 | Head | Supervisor | Connecticut |
| 24 | Veronica Church | 15 | Daughter | — | Massachusetts |
| 25 | Teresa Church | 14 | Daughter | — | New Jersey |
| 26 | Donald Church | 5 | Son | — | New Jersey |
| 27 | Thomas J. Maher | 41 | Head | Milk Man | New Jersey |
| 28 | Mary E. Maher | 39 | Wife | — | New Jersey |
| 29 | Thomas J. Maher | 15 | Son | — | New Jersey |
| 30 | Mary E. Maher | 14 | Daughter | — | New Jersey |
| 31 | Joseph F. Maher | 11 | Son | — | New Jersey |
| 32 | Neil H. Maher | 2 | Son | — | New Jersey |
| 33 | Cornelius Brennan | 37 | Head | Starter | New Jersey |
| 34 | Margaret Brennan THIS PERSON | 33 | Wife | — | New Jersey |
| 35 | Margaret Brennan | 2 | Daughter | — | New Jersey |
| 36 | Richard J. Brennan | 30 | Brother | — | New Jersey |
| 37 | Michael F. Hurley | 49 | Head | Talk Hand | New Jersey |
| 38 | Anna L. Hurley | 48 | Wife | — | New Jersey |
| 39 | John F. Hurley | 26 | Son | — | New Jersey |
| 40 | Michael J. Hurley | 24 | Son | — | New Jersey |
Related Census Records
Pedigree Summary
Margaret
Gen 1 · 4 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)