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John Brennan — 1940 US Census Record
Model Tree available1940 United States Federal Census · Luzerne-County, Pennsylvania
Our Model Tree links this John Brennan across the 1920, 1930 and 1940 US Censuses in Luzerne-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Michael & Margaret — first a son (b.~1917), then head of a 6-person household.
Age 23
b. ~1917
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Luzerne-County, Pennsylvania |
| Surname | Brennan |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Kingston Boro |
| 1935 Residence (County) | Luzerne |
| Additional Details | |
| Occupation | Waiter |
| Industry | Restaurant |
| Class of Worker | PW |
| Hours Worked | 30 |
| Income (1939) | 150 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Waiter |
| Township / Ward | Kingston Boro |
| Est. Birth Year | ~1917 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Agnes Brennan | Daughter | — | 10 | ~1930 |
| Michael Brennan | Head | — | 55 | ~1885 |
| Herbert Brennan | Son | — | 18 | ~1922 |
| Charles Brennan | Son | — | 11 | ~1929 |
| John Brennan | Son | — | 23 | ~1917 |
| Margaret Brennan | Spouse | — | 44 | ~1896 |
Census Appearances
1920
Luzerne, Pennsylvania
Other, age 3
Luzerne, Pennsylvania · implied b. ~1917 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brennan |
| Given Name | John |
| Relationship to Head | Boarder |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Luzerne, Pennsylvania
Other, age 14
Luzerne, Pennsylvania · implied b. ~1916 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brennan |
| Given Name | John |
| Relationship to Head | Stepson |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Luzerne-County, Pennsylvania
Son, age 23
Luzerne-County, Pennsylvania · implied b. ~1917 — 6 household members
| Surname | Brennan |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Kingston Boro |
| 1935 Residence (County) | Luzerne |
| Occupation | Waiter |
| Industry | Restaurant |
| Class of Worker | PW |
| Hours Worked | 30 |
| Income (1939) | 150 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 Michael Brennan (~0.92 confidence) and mother Margaret Brennan (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Michael Brennan
b. ~1885
Source father
● Household
· direct · ~0.92
Mother
Margaret Brennan
b. ~1896
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Brennan
Son · 1940 · age 23 · b. ~1917 · Pennsylvania
★ You are viewing this record
Sibling
Agnes Brennan
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Herbert Brennan
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Brennan
Sibling · 1940 · age 11
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 — Luzerne-County, Pennsylvania
Open full size
1940 US Federal Census — Luzerne-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03554-00495)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Walter, Shirley Walters | 12 | Daughter | — | Pennsylvania |
| 42 | Mary Brennan | 73 | Head | — | Pennsylvania |
| 43 | Michael Brennan | 55 | Head | Mason | Pennsylvania |
| 44 | Margaret Brennan | 44 | Wife | — | Pennsylvania |
| 45 | John Brennan THIS PERSON | 23 | Son | Waiter | Pennsylvania |
| 46 | Herbert J. Brennan | 18 | Son | Laborer | Pennsylvania |
| 47 | Charles Brennan | 11 | Son | — | Pennsylvania |
| 48 | Agnes Brennan | 10 | Daughter | — | Pennsylvania |
| 49 | Leo Stein | 37 | Head | Timekeeper | Pennsylvania |
| 50 | Cecelia Stein | 33 | Wife | — | Pennsylvania |
| 51 | Leo Jr. Stein | 14 | Son | — | Pennsylvania |
| 52 | Rosemary Stein | 11 | Daughter | — | Pennsylvania |
| 53 | Frederick Stein | 5 | Son | — | Pennsylvania |
| 54 | Eugene Brady | 61 | Head | Bartender | Pennsylvania |
| 55 | Mary Brady | 58 | Wife | — | Pennsylvania |
| 56 | Charles Brady | 38 | Son | — | Pennsylvania |
| 57 | Mary Brady | 28 | Daughter | — | Pennsylvania |
| 58 | Madeline Brady | 27 | Daughter | — | Pennsylvania |
| 59 | Irene Brady | 20 | Daughter | Laundress | Pennsylvania |
| 60 | Jim Brady | 25 | Son | — | Pennsylvania |
| 61 | Thomas Brady | 23 | Son | Laborer | Pennsylvania |
| 62 | Betty Brady | 15 | Daughter | — | Pennsylvania |
| 63 | Elmer Synder | 48 | Head | Laborer | Pennsylvania |
| 64 | Frances Synder | 50 | Wife | — | Pennsylvania |
| 65 | Frances Synder | 18 | Daughter | New Worker | Pennsylvania |
| 66 | Alice Synder | 17 | Daughter | — | Pennsylvania |
| 67 | Elmer Jr. Synder | 9 | Son | — | Pennsylvania |
| 68 | Margaret Pugh | 27 | Sister in law | — | Pennsylvania |
| 69 | Jim Pugh | 8 | Brother in law | — | Pennsylvania |
| 70 | Robert Parsons | 42 | Head | Teacher | Pennsylvania |
| 71 | Helen Parsons | 41 | Wife | — | Pennsylvania |
| 72 | Ralph Parsons | 6 | Son | — | Pennsylvania |
| 73 | Arthur Parsons | 4 | Son | — | Pennsylvania |
| 74 | Betty Parsons | 13 | Daughter | — | Pennsylvania |
| 75 | Bobby Parsons | 12 | Son | — | Pennsylvania |
| 76 | William Brennan | 52 | Head | Company Laborer | Pennsylvania |
| 77 | Maria Brennan | 37 | Wife | — | Pennsylvania |
| 78 | Rosemary Brennan | 19 | Daughter | — | Pennsylvania |
| 79 | Margaret Brennan | 9 | Daughter | — | Pennsylvania |
| 80 | Caroline Brennan | 3 | Daughter | — | Pennsylvania |
Pedigree Summary
John + 3 siblings
Gen 1 · 2 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)