WD
William Dunn — 1940 US Census Record
Model Tree available1940 United States Federal Census · Philadelphia-County, Pennsylvania
Our Model Tree links this William Dunn across the 1920, 1930 and 1940 US Censuses in Philadelphia-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Catherine & James — first a head (b.~1907), then head of a 4-person household.
Age 33
b. ~1907
Male
Head
Born: Penna
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Philadelphia-County, Pennsylvania |
| Surname | Dunn |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Penna |
| 1935 Residence (City) | Philadelphia City |
| 1935 Residence (County) | Philadelphia |
| Additional Details | |
| Occupation | Mechanic |
| Industry | Sheet Metal Co |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1140 |
| Highest Grade | H 1 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | penna |
| Occupation | Mechanic |
| Township / Ward | Philadelphia City |
| Est. Birth Year | ~1907 |
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 |
|---|---|---|---|---|
| Elizabeth Dunn | Daughter | — | 3 | ~1937 |
| William Dunn | Head | — | 33 | ~1907 |
| Paul Dunn | Son | — | 2 | ~1938 |
| Sarah Dunn | Spouse | — | 24 | ~1916 |
Census Appearances
1920
Philadelphia, Pennsylvania
Son, age 11
Philadelphia, Pennsylvania · implied b. ~1909 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dunn |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Penna |
| Father's Birthplace | Penna |
| Mother's Birthplace | Penna |
| Occupation | Machinist |
| Industry | Chemical Works |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | penna |
1930
Philadelphia, Pennsylvania
Son, age 21
Philadelphia, Pennsylvania · implied b. ~1909 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dunn |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Penna |
| Age at First Marriage | 21 |
| Father's Birthplace | Penna |
| Mother's Birthplace | Penna |
| Occupation | Plaster |
| Industry | Plaster Shop |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | penna |
1940
Philadelphia-County, Pennsylvania
Head, age 33
Philadelphia-County, Pennsylvania · implied b. ~1907 — 4 household members
| Surname | Dunn |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Penna |
| 1935 Residence (City) | Philadelphia City |
| 1935 Residence (County) | Philadelphia |
| Occupation | Mechanic |
| Industry | Sheet Metal Co |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1140 |
| Highest Grade | H 1 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | penna |
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 Dunn across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Catherine Dunn (~0.92 confidence) and father James Dunn (~0.92 confidence) and mother Anna Dunn (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Catherine Dunn
b. ~1873
Source mother
● Household
· direct · ~0.92
Father
James Dunn
b. ~1887
Source father
● Household
· direct · ~0.92
Mother
Anna Dunn
b. ~1889
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Dunn
Head · 1940 · age 33 · b. ~1907 · 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 — Philadelphia-County, Pennsylvania
Open full size
1940 US Federal Census — Philadelphia-County, Pennsylvania
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-03709-00962)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Florence Wacovonicy | 53 | Head | — | Lithuania |
| 2 | Marcella Wacovonicy | 42 | Wife | — | Lithuania |
| 3 | Henry Wacovonicy | 15 | Son | — | Penna |
| 4 | Peter Poznanski | 54 | Boarder | Laborer | Lithuania |
| 5 | William Dunn THIS PERSON | 33 | Head | Mechanic | Penna |
| 6 | Sarah Dunn | 24 | Wife | — | Penna |
| 7 | Elizabeth Dunn | 3 | Daughter | — | Penna |
| 8 | Paul Dunn | 2 | Son | — | Penna |
| 9 | Isaac Russikoff | 35 | Head | — | New York |
| 10 | Selma Russikoff | 32 | Wife | — | Penna |
| 11 | Leonard Russikoff | 12 | Son | — | Penna |
| 12 | Marvin Russikoff | 6 | Son | — | Penna |
| 13 | James Hepburn | 28 | Head | — | Scotland |
| 14 | Ellen Hepburn | 44 | Wife | — | Ireland |
| 15 | Mary Hepburn | 38 | Daughter | Typist | Penna |
| 16 | Eleanor Hepburn | 36 | Daughter | Typist | Penna |
| 17 | Margaret Hepburn | 35 | Daughter | Secretary | Penna |
| 18 | Catherine Hepburn | 33 | Daughter | Teacher | Penna |
| 19 | Cecelia Hepburn | 30 | Daughter | Teacher | Penna |
| 20 | Sarah Hepburn | 26 | Daughter | Teacher | Penna |
| 21 | Anna Hepburn | 23 | Daughter | New Worker | Penna |
| 22 | Clara Clark | 35 | Head | Presser | Penna |
| 23 | Frances Clark | 25 | Sister | Pairer | Penna |
| 24 | John Brudzinski | 47 | Head | Laborer | Poland |
| 25 | Anastasia Brudzinski | 41 | Wife | — | Poland |
| 26 | Stanley Brudzinski | 23 | Son | Operator | Penna |
| 27 | Regina Brudzinski | 16 | Daughter | — | Penna |
| 28 | Stanley Justozebski | 39 | Head | Chauffeur | Poland |
| 29 | Stella Justozebski | 33 | Wife | — | Penna |
| 30 | Irene Justozebski | 14 | Daughter | — | Penna |
| 31 | Veronica Justozebski | 7 | Daughter | — | Penna |
| 32 | Rita Justozebski | 3 | Daughter | — | Penna |
| 33 | Konstanty Zwolinski | 60 | Head | — | Poland |
| 34 | Annette Zwolinski | 58 | Wife | — | Poland |
| 35 | Stanley Zwolinski | 27 | Son-in-law | Mailman | Penna |
| 36 | Claire Zwolinski | 24 | Daughter | — | Penna |
| 37 | Claire A. Zwolinski | 3 | Granddaughter | — | Penna |
| 38 | Sophie Zwolinski | 81 | Mother | — | Poland |
| 39 | Theodore Orlowski | 23 | Lodger | Shipper | Penna |
Related Census Records
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)