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William Harrison — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this William Harrison across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents William & Mabel — first a son (b.~1919), then head of a 6-person household.
Age 21
b. ~1919
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Harrison |
| Given Name | William J. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Office Clerk |
| Industry | Mfg. Tools |
| Class of Worker | PW |
| Hours Worked | 24 |
| Income (1939) | 360 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Office Clerk |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1919 |
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 William | Age | Birth yr |
|---|---|---|---|---|
| Anna Harrison | Daughter | — | 16 | ~1924 |
| William Harrison | Head | — | 45 | ~1895 |
| William Harrison | Son | — | 21 | ~1919 |
| John Harrison | Son | — | 20 | ~1920 |
| Thomas Harrison | Son | — | 14 | ~1926 |
| Mabel Harrison | Spouse | — | 40 | ~1900 |
Census Appearances
1920
Cook, Illinois
Son, age 1
Cook, Illinois · implied b. ~1919 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harrison |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Son, age 12
Cook, Illinois · implied b. ~1918 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harrison |
| Given Name | William J Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 21
Cook-County, Illinois · implied b. ~1919 — 6 household members
| Surname | Harrison |
| Given Name | William J. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Occupation | Office Clerk |
| Industry | Mfg. Tools |
| Class of Worker | PW |
| Hours Worked | 24 |
| Income (1939) | 360 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Harrison across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father William Harrison (~0.92 confidence) and mother Mabel Harrison (~0.92 confidence) and father Arthur Harrison (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Harrison
b. ~1895
Source father
● Household
· direct · ~0.92
Mother
Mabel Harrison
b. ~1900
Source mother
● Household
· direct · ~0.92
Father
Arthur Harrison
b. ~1901
Source father
● Household
· direct · ~0.92
This person
Anchor record
William Harrison
Son · 1940 · age 21 · b. ~1919 · Illinois
★ You are viewing this record
Sibling
Thomas Harrison
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Harrison
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anna Harrison
Sibling · 1940 · age 16
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 — Cook-County, Illinois
Open full size
1940 US Federal Census — Cook-County, Illinois
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-00953-00041)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Marie V. Murphy | 38 | Head | Booker | Illinois |
| 2 | Edward P. Murphy | 18 | Son | Stock Worker | Illinois |
| 3 | Robert J. Murphy | 16 | Son | Printer | Illinois |
| 4 | Richard D. Murphy | 11 | Son | — | Illinois |
| 5 | Victoria M. Ambrose | 39 | Head | Bakery | Massachusetts |
| 6 | Leonard V. Ambrose | 22 | Son | Stock Worker | Illinois |
| 7 | Edward Ambrose | 19 | Son | Printer | Illinois |
| 8 | Elmer J. Fickler | 40 | Head | Owner - At Home | Illinois |
| 9 | Matilda J. Fickler | 45 | Wife | Owner - At Home | Northern Ireland |
| 10 | Elmer L. Fisher | 53 | Head | Chef | New York |
| 11 | Charles O. Lundgren | 57 | Head | Mail Clerk | Wisconsin |
| 12 | Rose Mabel Lundgren | 43 | Wife | Manager | Wisconsin |
| 13 | Hope M. Lundgren | 12 | Daughter | — | Illinois |
| 14 | Paul E. Lundgren | 11 | Son | — | Mississippi |
| 15 | Iva Mae Lundgren | 6 | Daughter | — | Illinois |
| 16 | Thomas Fee | 49 | Head | Laborer | Eire |
| 17 | Catherine Fee | 47 | Wife | — | Northern Ireland |
| 18 | Mary E. Fee | 23 | Daughter | — | Illinois |
| 19 | Thomas O. Fee | 13 | Son | — | Illinois |
| 20 | George Russell | 58 | Head | Owner + Operator | Wisconsin |
| 21 | Matilda Russell | 54 | Wife | Owner + Operator | Wisconsin |
| 22 | Fred Lange | 64 | Head | Maintenance Man | Germany |
| 23 | Bertha G. Lange | 54 | Wife | — | Germany |
| 24 | Robert Mcnamara | 36 | Son-in-law | Milkman | Illinois |
| 25 | Selma Mcnamara | 34 | Daughter | — | Illinois |
| 26 | Robert Jr. Mcnamara | 14 | Grand-son | — | Illinois |
| 27 | James J. Neff | 67 | Head | — | Michigan |
| 28 | Mary Neff | 67 | Wife | — | Illinois |
| 29 | William L. Stenge | 30 | Head | Meter Inspector | Illinois |
| 30 | Mercedes M. Stenge | 28 | Wife | — | Illinois |
| 31 | Helen De Costa | 35 | Head | Own Business | Illinois |
| 32 | William J. Harrison | 45 | Head | Trolley Tender | Illinois |
| 33 | Mabel Harrison | 40 | Wife | — | Illinois |
| 34 | William J. Jr. Harrison THIS PERSON | 21 | Son | Office Clerk | Illinois |
| 35 | John T. Harrison | 20 | Son | Truck Helper | Illinois |
| 36 | Anna Mae Harrison | 16 | Daughter | New Worker | Illinois |
| 37 | Thomas E. Harrison | 14 | Son | New Worker | Illinois |
| 38 | Michael A. Oruchnicki | 31 | Head | Jr. Clerk | Michigan |
| 39 | Nancy E. Oruchnicki | 23 | Wife | — | Illinois |
Pedigree Summary
William + 3 siblings
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)