WK
William Kennedy — 1940 US Census Record
Model Tree available1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this William Kennedy across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents John & Helen — first a son (b.~1901), then head of a 4-person household.
Age 39
b. ~1901
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Kennedy |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Occupation | Draftsman |
| Industry | City of Pgh |
| Class of Worker | GW |
| Hours Worked | 15 |
| Income (1939) | 1500 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Draftsman |
| Township / Ward | Pittsburgh |
| Est. Birth Year | ~1901 |
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 |
|---|---|---|---|---|
| Mildred Kennedy | Daughter | — | 34 | ~1906 |
| Helen Kennedy | Head | — | 70 | ~1870 |
| Ralph Kennedy | Son | — | 26 | ~1914 |
| William Kennedy | Son | — | 39 | ~1901 |
Census Appearances
1920
Allegheny, Pennsylvania
Son, age 19
Allegheny, Pennsylvania · implied b. ~1901 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kennedy |
| 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 |
| Occupation | Tracer |
| Industry | Copper Co. |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Son, age 29
Allegheny, Pennsylvania · implied b. ~1901 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kennedy |
| Given Name | William E |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Draughtsman |
| Industry | Engineering |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Son, age 39
Allegheny-County, Pennsylvania · implied b. ~1901 — 4 household members
| Surname | Kennedy |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Occupation | Draftsman |
| Industry | City of Pgh |
| Class of Worker | GW |
| Hours Worked | 15 |
| Income (1939) | 1500 |
| Highest Grade | Hs 4 |
| 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 Kennedy across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Kennedy (~0.92 confidence) and mother Helen Kennedy (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Kennedy
b. ~1868
Source father
● Household
· direct · ~0.92
Mother
Helen Kennedy
b. ~1870
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Kennedy
Son · 1940 · age 39 · b. ~1901 · Pennsylvania
★ You are viewing this record
Sibling
Ralph Kennedy
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mildred Kennedy
Sibling · 1940 · age 34
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 — Allegheny-County, Pennsylvania
Open full size
1940 US Federal Census — Allegheny-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03657-00299)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Lucyal Dorothy Luczak | 13 | Daughter | — | Pennsylvania |
| 42 | Jimmy Luczak | 9 | Son | — | Pennsylvania |
| 43 | Patrick Cullian | 56 | Head | Mechanic | Pennsylvania |
| 44 | Anna Cullian | 47 | Wife | — | Pennsylvania |
| 45 | Regina Cullian | 25 | Daughter | Cashier | Pennsylvania |
| 46 | Margaret Cullian | 23 | Daughter | Cashier | Pennsylvania |
| 47 | Ralph Cullian | 21 | Son | New Worker | Pennsylvania |
| 48 | Joseph Loughrey | 37 | Lodger | Bartender | Pennsylvania |
| 49 | Helen Kennedy | 70 | Head | — | Pennsylvania |
| 50 | William Kennedy THIS PERSON | 39 | Son | Draftsman | Pennsylvania |
| 51 | Mildred Kennedy | 34 | Daughter | Saleslady | Pennsylvania |
| 52 | Ralph Kennedy | 26 | Son | Recreation | Pennsylvania |
| 53 | Martha Heckman | 41 | Head | — | Pennsylvania |
| 54 | Jack Heckman | 21 | Son | Clerk | Pennsylvania |
| 55 | George Hamilton | 28 | Head | Laborer | Ireland (N.I.) |
| 56 | Ellen Hamilton | 28 | Wife | — | Ireland (N.I.) |
| 57 | Bridget Malley | 70 | Head | — | Ireland (N.I.) |
| 58 | Joseph Mcmahon | 57 | Head | Janitor | Pennsylvania |
| 59 | Agnes Mcmahon | 50 | Wife | — | Ireland (N.I.) |
| 60 | Robert Mcmahon | 13 | Son | — | Pennsylvania |
| 61 | John Derler | 75 | Head | — | Pennsylvania |
| 62 | Catherine Derler | 63 | Wife | — | Pennsylvania |
| 63 | George Derler | 22 | Son | New Worker | Pennsylvania |
| 64 | Frank Redderman | 31 | Head | Homicide | Pennsylvania |
| 65 | Delores Redderman | 11 | Daughter | — | Pennsylvania |
| 66 | Leo Redderman | 8 | Son | — | Pennsylvania |
| 67 | Ruth Redderman | 4 | Son | — | Pennsylvania |
| 68 | Charles Heismiller | 54 | Head | Baggageman | Pennsylvania |
| 69 | Lillian Heismiller | 51 | Wife | — | Pennsylvania |
| 70 | Eugene Heismiller | 17 | Son | — | Pennsylvania |
| 71 | Michael Conway | 54 | Head | Policeman | Ireland |
| 72 | Margaret Conway | 54 | Wife | — | Pennsylvania |
| 73 | Edward Conway | 25 | Son | Clerk | Pennsylvania |
| 74 | Rita Conway | 22 | Daughter | Saleslady | Pennsylvania |
| 75 | John Conway | 18 | Son | Printer | Pennsylvania |
| 76 | Benjamin Stead | 43 | Head | Laborer | Pennsylvania |
| 77 | Bernice Stead | 37 | Wife | — | Pennsylvania |
| 78 | William Stead | 20 | Son | New Worker | Pennsylvania |
| 79 | Mildred Stead | 16 | Daughter | — | Pennsylvania |
| 80 | Betty Stead | 14 | Daughter | — | Pennsylvania |
Related Census Records
Pedigree Summary
William + 2 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)