WB
William Brennan — 1940 US Census Record
Model Tree available1940 United States Federal Census · Carbon-County, Pennsylvania
Our Model Tree links this William Brennan across the 1920, 1930 and 1940 US Censuses in Carbon-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Patrick & Catherine — first a head (b.~1910), then head of a 4-person household.
Age 30
b. ~1910
Male
Head
Born: Pennsylvania
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Carbon-County, Pennsylvania |
| Surname | Brennan |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Lansford Boro |
| 1935 Residence (County) | Carbon |
| Additional Details | |
| Occupation | Pipe-Fitter |
| Industry | Anthracite Strippings |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 350 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same Place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Pipe-Fitter |
| Township / Ward | Lansford Boro |
| 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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| William Brennan | Son | — | 3 | ~1937 |
| William Brennan | Head | — | 30 | ~1910 |
| Genevieve Brennan | Spouse | — | 28 | ~1912 |
| Patricia Brennan | Daughter | — | 4 | ~1936 |
Census Appearances
1920
Carbon, Pennsylvania
Son, age 9
Carbon, Pennsylvania · implied b. ~1911 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brennan |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Carbon, Pennsylvania
Son, age 19
Carbon, Pennsylvania · implied b. ~1911 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brennan |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Carbon-County, Pennsylvania
Head, age 30
Carbon-County, Pennsylvania · implied b. ~1910 — 4 household members
| Surname | Brennan |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Lansford Boro |
| 1935 Residence (County) | Carbon |
| Occupation | Pipe-Fitter |
| Industry | Anthracite Strippings |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 350 |
| Highest Grade | Hs 2 |
| 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 William Brennan across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Patrick Brennan (~0.92 confidence) and mother Catherine Brennan (~0.92 confidence) and mother Kathryn Brennan (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Patrick Brennan
b. ~1873
Source father
● Household
· direct · ~0.92
Mother
Catherine Brennan
b. ~1878
Source mother
● Household
· direct · ~0.92
Mother
Kathryn Brennan
b. ~1883
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Brennan
Head · 1940 · age 30 · b. ~1910 · Pennsylvania
★ 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 — Carbon-County, Pennsylvania
Open full size
1940 US Federal Census — Carbon-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03460-00597)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Jacqueline Tanheri | 2 | Grand-daughter | — | Pennsylvania |
| 42 | John Marsinko | 55 | Head | Fireman | Slovakia |
| 43 | Pauline Marsinko | 54 | Wife | — | Slovakia |
| 44 | Steven Surka | 32 | Son-in-law | Carpenter | Pennsylvania |
| 45 | Mary Surka | 24 | Daughter | — | Slovakia |
| 46 | Joseph Surka | 8 | Grand-son | — | Pennsylvania |
| 47 | Steven, Jr. Surka | 3 | Grand-son | — | Pennsylvania |
| 48 | Maude Pasterius | 48 | Head | — | Pennsylvania |
| 49 | George Kline | 66 | Head | Foreman Tool Room | Pennsylvania |
| 50 | Blanche Kline | 63 | Wife | — | Pennsylvania |
| 51 | Simon Breslin | 70 | Head | Laborer | Pennsylvania |
| 52 | Mary Breslin | 59 | Wife | — | Pennsylvania |
| 53 | William Witherow | 21 | Son-in-law | Truck Driver | Pennsylvania |
| 54 | Margaret Witherow | 21 | Daughter | — | Pennsylvania |
| 55 | Alex Pappas | 49 | Head | Chef | Greece |
| 56 | Martha Pappas | 31 | Wife | — | Pennsylvania |
| 57 | Alex, Jr. Pappas | 10 | Son | — | Pennsylvania |
| 58 | Neal Harkins | 64 | Head | Switch Tender | Pennsylvania |
| 59 | Anna Harkins | 63 | Wife | — | Pennsylvania |
| 60 | William Brennan THIS PERSON | 30 | Head | Pipe-Fitter | Pennsylvania |
| 61 | Genevieve Brennan | 28 | Wife | — | Pennsylvania |
| 62 | Patricia Brennan | 4 | Daughter | — | Pennsylvania |
| 63 | William, Jr. Brennan | 3 | Son | — | Pennsylvania |
| 64 | Rebecca Mitchel | 63 | Head | — | Pennsylvania |
| 65 | Robert Mitchel | 38 | Son | Laborer | Pennsylvania |
| 66 | Warren Mitchel | 34 | Son | — | Pennsylvania |
| 67 | John Mitchel | 43 | Son | Salesman Driver | Pennsylvania |
| 68 | Carmen Nespoli | 56 | Head | Laborer | Italy |
| 69 | Columbo Nespoli | 50 | Wife | — | Italy |
| 70 | Arthur Jeffreys | 67 | Head | Laborer | Pennsylvania |
| 71 | Mabelle Jeffreys | 50 | Wife | — | Pennsylvania |
| 72 | George Dean | 50 | Head | Locomotive Engineer | Pennsylvania |
| 73 | Sara Dean | 46 | Wife | — | Pennsylvania |
| 74 | Linton Dean | 24 | Son | New Worker | Pennsylvania |
| 75 | John Gallagher | 43 | Head | Bus Driver | Pennsylvania |
| 76 | Lenore Gallagher | 38 | Wife | — | Pennsylvania |
| 77 | John, Jr. Gallagher | 18 | Son | New Worker | Pennsylvania |
| 78 | Helen Gallagher | 14 | Daughter | — | Pennsylvania |
| 79 | Robert Gallagher | 9 | Son | — | Pennsylvania |
| 80 | Joseph Gallagher | 2 | Son | — | Pennsylvania |
Pedigree Summary
William
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)