JB
John Brennan — 1940 US Census Record
Model Tree available1940 United States Federal Census · Orleans-County, Louisiana
Our Model Tree links this John Brennan across the 1920, 1930 and 1940 US Censuses in Orleans-County, Louisiana (XGBoost, ~Confirmed), with identified parents James & Minerva — first a son (b.~1916), then head of a 4-person household.
Age 24
b. ~1916
Male
Son
Born: Louisiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Orleans-County, Louisiana |
| Surname | Brennan |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Louisiana |
| 1935 Residence (City) | New Orleans City |
| Additional Details | |
| Occupation | Clerk |
| Industry | Cafe |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 700 |
| Highest Grade | H 4 |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
| Occupation | Clerk |
| Township / Ward | New Orleans City |
| Est. Birth Year | ~1916 |
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 |
|---|---|---|---|---|
| James Brennan | Head | — | 51 | ~1889 |
| James Brennan | Son | — | 26 | ~1914 |
| John Brennan | Son | — | 24 | ~1916 |
| Minerva Brennan | Spouse | — | 50 | ~1890 |
Census Appearances
1920
Orleans, Louisiana
Son, age 4
Orleans, Louisiana · implied b. ~1916 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brennan |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Louisiana |
| Father's Birthplace | Louisiana |
| Mother's Birthplace | Louisiana |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
1930
Orleans, Louisiana
Son, age 14
Orleans, Louisiana · implied b. ~1916 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brennan |
| Given Name | John D |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Louisiana |
| Father's Birthplace | Louisiana |
| Mother's Birthplace | Louisiana |
| Can Read/Write | Yes |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
1940
Orleans-County, Louisiana
Son, age 24
Orleans-County, Louisiana · implied b. ~1916 — 4 household members
| Surname | Brennan |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Louisiana |
| 1935 Residence (City) | New Orleans City |
| Occupation | Clerk |
| Industry | Cafe |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 700 |
| Highest Grade | H 4 |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
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 Brennan across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father James Brennan (~0.92 confidence) and mother Minerva Brennan (~0.92 confidence) and father James Brennan (~0.92 confidence) and mother Minerva Brennan (~0.92 confidence) and father Delmont Davis (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Brennan
b. ~1889
Source father
● Household
· direct · ~0.92
Mother
Minerva Brennan
b. ~1890
Source mother
● Household
· direct · ~0.92
Father
James Brennan
b. ~1891
Source father
● Household
· direct · ~0.92
Mother
Minerva Brennan
b. ~1891
Source mother
● Household
· direct · ~0.92
Father
Delmont Davis
b. ~1903
Source father
● Household
· direct · ~0.92
This person
Anchor record
John Brennan
Son · 1940 · age 24 · b. ~1916 · Louisiana
★ You are viewing this record
Sibling
James Brennan
Sibling · 1940 · age 26
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 — Orleans-County, Louisiana
Open full size
1940 US Federal Census — Orleans-County, Louisiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01420-00381)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Carol Ann Vitter | 4 | Grand Child | — | Louisiana |
| 2 | Patricia Vitter | 18 | Daughter | — | Louisiana |
| 3 | Albert Werner | 29 | Head | Photo Engraver | Louisiana |
| 4 | Marion Werner | 26 | Wife | — | Louisiana |
| 5 | Benjamin Halleover | 47 | Head | Stone Mason | Louisiana |
| 6 | Hortense Halleover | 47 | Wife | — | Louisiana |
| 7 | Clare Halleover | 16 | Daughter | — | Louisiana |
| 8 | Ernest Halleover | 9 | Son | — | Louisiana |
| 9 | Evelyn Halleover | 8 | Daughter | — | Louisiana |
| 10 | Edwin Villette | 35 | Head | Market Manager | Louisiana |
| 11 | Marion Villette | 30 | Wife | — | Louisiana |
| 12 | Kay Villette | 7 | Daughter | — | Louisiana |
| 13 | Dana Villette | 5 | Daughter | — | Louisiana |
| 14 | Edwin Jr. Villette | 2 | Son | — | Louisiana |
| 15 | Adolph Baudot | 72 | Father-in-law | — | Louisiana |
| 16 | Margaret Baudot | 72 | Mother-in-law | — | Louisiana |
| 17 | Charles Rhodes | 26 | Head | Teller | Louisiana |
| 18 | Catherine Rhodes | 23 | Wife | Typist | Louisiana |
| 19 | Charles Gerard | 47 | Head | Fireman | Louisiana |
| 20 | Viola Gerard | 47 | Wife | — | Louisiana |
| 21 | John Doyle | 34 | Head | Instrument Man | Oklahoma |
| 22 | Amelia Doyle | 33 | Wife | — | Louisiana |
| 23 | Geraldine Doyle | 2 | Daughter | — | Louisiana |
| 24 | Carolyn Doyle | 0 | Daughter | — | Louisiana |
| 25 | Henry Kistner | 57 | Head | Stationary Engineer | Illinois |
| 26 | Beulah Kistner | 52 | Wife | — | Philadelphia |
| 27 | Dorothea Kistner | 20 | Daughter | Public Library | New Jersey |
| 28 | Robert La Nasa | 25 | Head | Importer | Louisiana |
| 29 | Theresa La Nasa | 24 | Wife | — | Louisiana |
| 30 | Patrick La Nasa | 5 | Son | — | Louisiana |
| 31 | Clarence Gonzales | 49 | Father-in-law | Paving Inspector | Louisiana |
| 32 | Annie Gonzales | 48 | Mother-in-law | — | Louisiana |
| 33 | Robert Gonzales | 28 | Brother-in-law | Booking Agent | Louisiana |
| 34 | James Brennan | 51 | Head | Maintenance Man | Louisiana |
| 35 | Minerva Brennan | 50 | Wife | — | Louisiana |
| 36 | James Jr. Brennan | 26 | Son | — | Louisiana |
| 37 | John Brennan THIS PERSON | 24 | Son | Clerk | Louisiana |
| 38 | Christian Berckes | 63 | Head | — | New York |
| 39 | Louise Berckes | 73 | Wife | — | Louisiana |
| 40 | Archibald Berckes | 37 | Son | Teller | Louisiana |
Pedigree Summary
John + 1 sibling
Gen 1 · 5 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)