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William Brennan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Luzerne-County, Pennsylvania
Our Model Tree links this William Brennan across the 1930 and 1940 US Censuses in Luzerne-County, Pennsylvania (XGBoost, ~Confirmed) — first a son (b.~1920), then head of a 9-person household.
Age 20
b. ~1920
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Luzerne-County, Pennsylvania |
| Surname | Brennan |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Swoyerville Borough |
| 1935 Residence (County) | Luzerne |
| Additional Details | |
| Occupation | Wire worker |
| Industry | Wire mill |
| Class of Worker | PW |
| Hours Worked | 24 |
| Income (1939) | 90 |
| Highest Grade | H 2 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Wire Worker |
| Township / Ward | Swoyerville Borough |
| 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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Francis Brennan | Daughter | — | 24 | ~1916 |
| Gertrude Brennan | Daughter | — | 17 | ~1923 |
| Paul Eichorn | Son | — | 8 | ~1932 |
| Mary Eichorn | Daughter | — | 31 | ~1909 |
| Regina Webb | Daughter | — | 21 | ~1919 |
| Elizabeth Brennan | Head | — | 54 | ~1886 |
| William Brennan | Son | — | 20 | ~1920 |
| Rose Brennan | Daughter | — | 19 | ~1921 |
| Betty Webb | Daughter | — | 2 | ~1938 |
Census Appearances
1930
Luzerne, Pennsylvania
Son, age 10
Luzerne, Pennsylvania · implied b. ~1920 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brennan |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| 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
Luzerne-County, Pennsylvania
Son, age 20
Luzerne-County, Pennsylvania · implied b. ~1920 — 9 household members
| Surname | Brennan |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Swoyerville Borough |
| 1935 Residence (County) | Luzerne |
| Occupation | Wire worker |
| Industry | Wire mill |
| Class of Worker | PW |
| Hours Worked | 24 |
| Income (1939) | 90 |
| Highest Grade | H 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 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Brennan
Son · 1940 · age 20 · b. ~1920 · Pennsylvania
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Sibling
Betty Webb
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gertrude Brennan
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rose Brennan
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Eichorn
Sibling · 1940 · age 31
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Regina Webb
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Brennan
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paul Eichorn
Sibling · 1940 · age 8
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-t0627-03560-00728)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Emily Yakubpo | 15 | Daughter | — | Pennsylvania |
| 42 | Andrew Sajon | 55 | Head | Carpenter | Austria |
| 43 | Mary Sajon | 54 | Wife | — | Austria |
| 44 | John Sajon | 28 | Son | Collector | Pennsylvania |
| 45 | Helen Sajon | 26 | Daughter | Bookkeeper | Pennsylvania |
| 46 | Edward Sajon | 20 | Son | Typist | Pennsylvania |
| 47 | Elizabeth Brennan | 54 | Head | — | Pennsylvania |
| 48 | Francis Brennan | 24 | Daughter | Cigar Stripper | Pennsylvania |
| 49 | William Brennan THIS PERSON | 20 | Son | Wire Worker | Pennsylvania |
| 50 | Rose Brennan | 19 | Daughter | Timekeeper | Pennsylvania |
| 51 | Gertrude Brennan | 17 | Daughter | — | Pennsylvania |
| 52 | Mary Eichorn | 31 | Daughter | — | Pennsylvania |
| 53 | Paul Eichorn | 8 | Son | — | Pennsylvania |
| 54 | Regina Webb | 21 | Daughter | — | Pennsylvania |
| 55 | Betty Jean Webb | 2 | Daughter | — | Pennsylvania |
| 56 | Donald Belles | 29 | Head | Foreman | Pennsylvania |
| 57 | Hannah Belles | 27 | Wife | — | Pennsylvania |
| 58 | Elizabeth Belles | 7 | Daughter | — | Pennsylvania |
| 59 | Donald Belles | 5 | Son | — | Pennsylvania |
| 60 | Robert Belles | 3 | Son | — | Pennsylvania |
| 61 | James Casey | 34 | Head | Footman | Pennsylvania |
| 62 | Mary Casey | 33 | Wife | — | Pennsylvania |
| 63 | James Jr. Casey | 8 | Son | — | Pennsylvania |
| 64 | Donald Casey | 6 | Son | — | Pennsylvania |
| 65 | Molly Casey | 2 | Daughter | — | Pennsylvania |
| 66 | Frank Vratoric | 41 | Head | Business Agent | Yugoslavia |
| 67 | Stephanie Vratoric | 41 | Wife | — | Yugoslavia |
| 68 | Catherine Vratoric | 19 | Daughter | Bookkeeper | Pennsylvania |
| 69 | Frank Jr. Vratoric | 17 | Son | — | Pennsylvania |
| 70 | Stephen Belle | 70 | Son | — | Yugoslavia |
| 71 | Nicholas Keznaris | 44 | Roomer | Miner | Lithuania |
| 72 | Paul Keznaris | 21 | Roomer | Laborer | West Virginia |
| 73 | Martha Guzo | 58 | Head | — | Austria |
| 74 | John Guzo | 27 | Son | Laborer | Pennsylvania |
| 75 | Catherine Guzo | 25 | Daughter | Store Clerk | Pennsylvania |
| 76 | Andrew Guzo | 18 | Son | Assistant Janitor | Pennsylvania |
| 77 | Stephen Guzo | 16 | Son | — | Pennsylvania |
| 78 | Albert Guzo | 13 | Son | — | Pennsylvania |
| 79 | John Dula | 37 | Son | Laborer | Pennsylvania |
| 80 | Margaret Dula | 35 | Daughter | — | Pennsylvania |
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)