JB
James Brennan — 1940 US Census Record
Model Tree available1940 United States Federal Census · Kings-County, New York
Our Model Tree links this James Brennan across the 1920, 1930 and 1940 US Censuses in Kings-County, New York (XGBoost, ~Confirmed), with identified parents Frank & Francis — first a son (b.~1920), then head of a 3-person household.
Age 20
b. ~1920
Male
Son
Born: New York
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Kings-County, New York |
| Surname | Brennan |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | Kings |
| Additional Details | |
| Highest Grade | No |
| 1935 Residence | Same House |
| Birth State | New York |
| Birth Country | United States |
| Birthplace (normalized) | new york |
| Township / Ward | New York City |
| Est. Birth Year | ~1920 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Francis Brennan | Head | — | 47 | ~1893 |
| James Brennan | Son | — | 20 | ~1920 |
| Mildred Brennan | Spouse | — | 41 | ~1899 |
Census Appearances
1920
Kings, New …
Son, age
Kings, New York · implied b. ~1920 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brennan |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| 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
Kings, New …
Son, age 10
Kings, New York · implied b. ~1920 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brennan |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| 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
Kings-County, New …
Son, age 20
Kings-County, New York · implied b. ~1920 — 3 household members
| Surname | Brennan |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | New York |
| 1935 Residence (City) | New York City |
| 1935 Residence (County) | Kings |
| Highest Grade | No |
| 1935 Residence | Same House |
| 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 Francis Brennan (~0.92 confidence) and father Frank Brennan (~0.92 confidence) and mother Mildred Brennan (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Frank Brennan
b. ~1891
Source father
● Household
· direct · ~0.92
Father
Francis Brennan
b. ~1893
Source father
● Household
· direct · ~0.92
Father
Frank Brennan
b. ~1894
Source father
● Household
· direct · ~0.92
Mother
Mildred Brennan
b. ~1899
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Brennan
Son · 1940 · age 20 · b. ~1920 · 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 — Kings-County, New York
Open full size
1940 US Federal Census — Kings-County, New York
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-02584-00843)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Edward Weiss | 12 | Son | — | New York |
| 42 | Joseph Weiss | 10 | Son | — | New York |
| 43 | Robert Weiss | 6 | Son | — | New York |
| 44 | Edward Yonnes | 50 | Head | Sheet Metal | New York |
| 45 | Margaret Yonnes | 50 | Wife | — | Germany |
| 46 | Elizabeth Yonnes | 33 | Adopted Daughter | Mangel Girl | New York |
| 47 | Margaret Heidinger | 76 | Mother-in-law | — | Germany |
| 48 | Peter Yonnes | 55 | Brother | Watchman | New York |
| 49 | Jerome Staropoli | 64 | Head | — | Italy |
| 50 | Providence Staropoli | 57 | Wife | Asst | Italy |
| 51 | Mary Staropoli | 25 | Daughter | — | New York |
| 52 | Lucy Alba | 26 | Daughter | — | New York |
| 53 | Anthony Alba | 27 | Son-in-law | — | New York |
| 54 | Louis Sunko | 50 | Head | Window Dress | Lithuania |
| 55 | Helen Sunko | 47 | Wife | Waiter | Lithuania |
| 56 | Albert Sunko | 25 | Son | — | New York |
| 57 | Lucille Sunko | 21 | Daughter | Machinist | New York |
| 58 | Eleanor Sunko | 18 | Daughter | Office Work | New York |
| 59 | Bertha Sunko | 15 | Daughter | Office Work | New York |
| 60 | Jeanne Sunko | 9 | Daughter | — | New York |
| 61 | Joseph Aronin | 53 | Head | Store Proprietor | Russia |
| 62 | Lillian Aronin | 46 | Wife | — | New York |
| 63 | Mortin Aronin | 22 | Son | — | New York |
| 64 | Francis Brennan | 47 | Head | New Worker | New York |
| 65 | Mildred Brennan | 41 | Wife | Clerk | New York |
| 66 | James Brennan THIS PERSON | 20 | Son | — | New York |
| 67 | Grace Kraft | 52 | Head | Clerk | New York |
| 68 | Philip Kraft | 8 | Son | — | New York |
| 69 | Richard Kraft | 5 | Son | — | New York |
| 70 | Henry Schneider | 39 | Head | Trucker | New York |
| 71 | Pauline Schneider | 68 | Mother | — | New York |
| 72 | Francis Spina | 47 | Head | Laborer | Italy |
| 73 | Rose Spina | 43 | Wife | — | Italy |
| 74 | Anthony Spina | 20 | Son | Park Dept | New York |
| 75 | Vito Spina | 17 | Son | New Worker | New York |
| 76 | Vincenza Spina | 15 | Daughter | — | New York |
| 77 | James Spina | 13 | Son | — | New York |
| 78 | Rose Spina | 10 | Daughter | — | New Jersey |
| 79 | Margaret Spina | 8 | Daughter | — | New York |
Pedigree Summary
James
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)