MB
Margaret Brennan — 1940 US Census Record
Model Tree available1940 United States Federal Census · Union-County, New Jersey
Our Model Tree links this Margaret Brennan across the 1920, 1930 and 1940 US Censuses in Union-County, New Jersey (XGBoost, ~Confirmed), with identified parents Edward & Annie — first a daughter (b.~1910), then head of a 8-person household.
Age 30
b. ~1910
Female
Daughter
Born: New Jersey
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Union-County, New Jersey |
| Surname | Brennan |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Rahway City |
| 1935 Residence (County) | UNION |
| Additional Details | |
| Occupation | Key-Punch Operator |
| Industry | Life-Insurance |
| Class of Worker | PW |
| Hours Worked | 35 |
| Income (1939) | 1192 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same house |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Occupation | Key-Punch Operator |
| Township / Ward | Rahway City |
| Est. Birth Year | ~1910 |
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 Margaret | Age | Birth yr |
|---|---|---|---|---|
| Edward Brennan | Son | — | 26 | ~1914 |
| Margaret Brennan | Daughter | — | 30 | ~1910 |
| Ann Brennan | Daughter | — | 23 | ~1917 |
| Roger Brennan | Son | — | 20 | ~1920 |
| Edward Brennan | Head | — | 62 | ~1878 |
| Rose Brennan | Daughter | — | 24 | ~1916 |
| Annie Brennan | Spouse | — | 58 | ~1882 |
| Robert Brennan | Son | — | 15 | ~1925 |
Census Appearances
1920
Union, New …
Daughter, age 10
Union, New Jersey · implied b. ~1910 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brennan |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1930
Union, New …
Daughter, age 20
Union, New Jersey · implied b. ~1910 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brennan |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Occupation | Stenographer |
| Industry | Prudential |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Union-County, New …
Daughter, age 30
Union-County, New Jersey · implied b. ~1910 — 8 household members
| Surname | Brennan |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | New Jersey |
| 1935 Residence (City) | Rahway City |
| 1935 Residence (County) | UNION |
| Occupation | Key-Punch Operator |
| Industry | Life-Insurance |
| Class of Worker | PW |
| Hours Worked | 35 |
| Income (1939) | 1192 |
| Highest Grade | Hs 4 |
| 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 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Edward Brennan (~0.92 confidence) and mother Annie Brennan (~0.92 confidence) and mother Anna Brennan (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Edward Brennan
b. ~1878
Source father
● Household
· direct · ~0.92
Mother
Annie Brennan
b. ~1882
Source mother
● Household
· direct · ~0.92
Mother
Anna Brennan
b. ~1886
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Margaret Brennan
Daughter · 1940 · age 30 · b. ~1910 · New Jersey
★ You are viewing this record
Sibling
Edward Brennan
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ann Brennan
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Roger Brennan
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rose Brennan
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Brennan
Sibling · 1940 · age 15
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 — Union-County, New Jersey
Open full size
1940 US Federal Census — Union-County, New Jersey
Page Contents
35 people indexed on this census page (nara:1940:m-t0627-02388-00403)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | George Terpack | 50 | Head | Handy Man | Austria |
| 2 | Sophie Terpack | 55 | Wife | — | Hungary |
| 3 | John Terpack | 28 | Son | Shipping Clerk | Penn |
| 4 | George Terpack | 22 | Son | Shipping Clerk | New Jersey |
| 5 | Peter Terpack | 16 | Son | — | New Jersey |
| 6 | Joseph Watson | 20 | Head | Laborer | Georgia |
| 7 | Lillian Watson | 19 | Wife | — | New Jersey |
| 8 | Evelyn Watson | 1 | Daughter | — | New Jersey |
| 9 | Joseph Jr. Watson | 0 | Son | — | New Jersey |
| 11 | George Schalestock | 32 | Head | Locomotive Fireman | New Jersey |
| 12 | Mary Suring | 30 | Sister | — | New Jersey |
| 13 | Charles Schalestock | 28 | Brother | Chiropractor | New Jersey |
| 14 | Mary Schalestock | 60 | Mother | — | Hungary |
| 15 | John Fedeles | 59 | Head | Track Laborer | Austria |
| 16 | Pauline Fedeles | 52 | Wife | — | Austria |
| 17 | Charles Fedeles | 22 | Son | App Machinist | New Jersey |
| 18 | Mary Mccrecken | 48 | Head | — | Penn |
| 19 | Arthur L. Mccrecken | 24 | Son | Machinist | New Jersey |
| 23 | Harry Sallinger | 56 | Head | Signal Maintainer | New Jersey |
| 24 | Katherine Sallinger | 55 | Wife | — | New Jersey |
| 25 | Frank Tolly | 23 | Step-Son | Acquisition Clerk | New Jersey |
| 26 | Mary Brennan | 68 | Sister-in-law | — | New Jersey |
| 27 | Edward Brennan | 62 | Head | Salesman | New Jersey |
| 28 | Annie Brennan | 58 | Wife | — | New Jersey |
| 29 | Margaret Brennan THIS PERSON | 30 | Daughter | Key-Punch Operator | New Jersey |
| 30 | Edward Brennan | 26 | Son | Truck-Driver | New Jersey |
| 31 | Rose Brennan | 24 | Daughter | — | New Jersey |
| 32 | Ann Brennan | 23 | Daughter | Stenographer | New Jersey |
| 33 | Roger Brennan | 20 | Son | Machine Operator | New Jersey |
| 34 | Robert Brennan | 15 | Son | — | New Jersey |
| 36 | Alonzo Jolly | 51 | Head | Pick & Shovel Laborer | Georgia |
| 37 | Anna Jolly | 48 | Wife | General-Work | Georgia |
| 38 | Annabelle Jolly | 75 | Mother | — | Georgia |
| 39 | Dolores Blackwell | 9 | Daughter | — | New Jersey |
| 40 | Laura Edwards | 23 | Lodger | General Days-Worker | New Jersey |
Related Census Records
Pedigree Summary
Margaret + 5 siblings
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)