JB
James Brennan — 1940 US Census Record
Model Tree available1940 United States Federal Census · Erie-County, New York
Our Model Tree links this James Brennan across the 1920, 1930 and 1940 US Censuses in Erie-County, New York (XGBoost, ~Confirmed), with identified parents Frank & Frank — first a son (b.~1915), then head of a 6-person household.
Age 25
b. ~1915
Male
Son
Born: New York
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Erie-County, New York |
| Surname | Brennan |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | New York |
| 1935 Residence (City) | Tonawanda Town |
| 1935 Residence (County) | Erie |
| Additional Details | |
| Occupation | Mach. Operator |
| Industry | Paper Mill |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 196 |
| Highest Grade | H 1 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Occupation | Mach. Operator |
| Township / Ward | Tonawanda Town |
| Est. Birth Year | ~1915 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Frank Brennan | Head | — | 55 | ~1885 |
| Myrtle Brennan | Other | — | 20 | ~1920 |
| Erna Voelker | Other | — | 63 | ~1877 |
| Ronald Brennan | Other | — | ~1940 | |
| James Brennan | Son | — | 25 | ~1915 |
| Frances Brennan | Spouse | — | 51 | ~1889 |
Census Appearances
1920
Erie, New …
Son, age 5
Erie, New York · implied b. ~1915 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brenon |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1930
Erie, New …
Son, age 15
Erie, New York · implied b. ~1915 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brenon |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | New York |
| Father's Birthplace | New York |
| Mother's Birthplace | New York |
| Can Read/Write | Yes |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
1940
Erie-County, New …
Son, age 25
Erie-County, New York · implied b. ~1915 — 6 household members
| Surname | Brennan |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Married |
| Birthplace | New York |
| 1935 Residence (City) | Tonawanda Town |
| 1935 Residence (County) | Erie |
| Occupation | Mach. Operator |
| Industry | Paper Mill |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 196 |
| Highest Grade | H 1 |
| 1935 Residence | Same place |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
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 James Brennan across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Frank Brennan (~0.92 confidence) and father Frank Brenon (~0.92 confidence) and mother Frances Brenon (~0.92 confidence) and mother Florence Brenon (~0.92 confidence) and mother Frances Brennan (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Frank Brennan
b. ~1885
Source father
● Household
· direct · ~0.92
Father
Frank Brenon
b. ~1885
Source father
● Household
· direct · ~0.92
Mother
Frances Brenon
b. ~1888
Source mother
● Household
· direct · ~0.92
Mother
Florence Brenon
b. ~1889
Source mother
● Household
· direct · ~0.92
Mother
Frances Brennan
b. ~1889
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Brennan
Son · 1940 · age 25 · b. ~1915 · 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 — Erie-County, New York
Open full size
1940 US Federal Census — Erie-County, New York
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02531-00521)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Margaret Burgess | 16 | Daughter | — | New York |
| 42 | William L. Burgess | 34 | Head | Interior Decorator | New York |
| 43 | Alene Burgess | 30 | Wife | — | New York |
| 44 | William L. Jr. Burgess | 7 | Son | — | New York |
| 45 | Barbara L. Burgess | 5 | Daughter | — | New York |
| 46 | Carol Anne Burgess | 0 | Daughter | — | New York |
| 47 | Virginia Johnson | 17 | Maid | Maid | New York |
| 48 | Willard Reed | 39 | Head | Foreman Oil Business | Pennsylvania |
| 49 | Aimee Reed | 34 | Wife | — | Pennsylvania |
| 50 | Marjorie Reed | 7 | Daughter | — | New York |
| 51 | Harry Reed | 3 | Son | — | New York |
| 52 | Gordon Charles | 31 | Head | Mech. Operator | New York |
| 53 | Rose Charles | 27 | Wife | — | New York |
| 54 | Gordon Jr. Charles | 11 | Son | — | New York |
| 55 | Rita Charles | 10 | Daughter | — | New York |
| 56 | Sarah Childs | 50 | Mother | — | New York |
| 57 | Martha Robolt | 46 | Head | — | New York |
| 58 | Charles Robolt | 23 | Son | Mechanic | New York |
| 59 | Dorothy H. Robolt | 17 | Daughter | — | New York |
| 60 | Gardiner Watterson | 32 | Head | Engineer | New York |
| 61 | Helen Watterson | 33 | Wife | — | New York |
| 62 | Roger Watterson | 7 | Son | — | New York |
| 63 | Stuart Watterson | 5 | Son | — | New York |
| 64 | Laura M. Lapp | 59 | Mother | — | New York |
| 65 | Thomas Stevenson | 62 | Head | Wood Pattern Maker | Scotland |
| 66 | Elizabeth Stevenson | 60 | Wife | — | Scotland |
| 67 | James Stevenson | 32 | Son | Machinist | Scotland |
| 68 | Barbara Stevenson | 29 | Daughter-in-law | — | New York |
| 69 | James Jr. Stevenson | 13 | Grandson | — | New York |
| 70 | Mary E. Stevenson | 8 | Granddaughter | — | New York |
| 71 | Barbara G. Stevenson | 6 | Granddaughter | — | New York |
| 72 | Frank Brennan | 55 | Head | Cattle Dealer | New York |
| 73 | Frances Brennan | 51 | Wife | — | New York |
| 74 | James Brennan THIS PERSON | 25 | Son | Mach. Operator | New York |
| 75 | Myrtle Brennan | 20 | Daughter-in-law | — | New York |
| 76 | Ronald Brennan | 0 | Grandson | — | New York |
| 77 | Erna L. Voelker | 63 | Lodger | — | New York |
| 78 | Willard T. Thames | 43 | Head | Assemblyman | New York |
| 79 | Nellie Thames | 49 | Wife | — | New York |
| 80 | Charles Theisler | 56 | Head | Dairy Farm | New York |
Pedigree Summary
James
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)