WP
William Pearson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this William Pearson across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Johanna & Emil — first a head (b.~1910), then head of a 3-person household.
Age 30
b. ~1910
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | PEARSON |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Shipping Clerk |
| Industry | Radio Mfg |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 936 |
| Highest Grade | H 2 |
| 1935 Residence | Same Place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Shipping Clerk |
| Township / Ward | Chicago City |
| 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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| William Pearson | Head | — | 30 | ~1910 |
| Ronald Pearson | Son | — | 4 | ~1936 |
| Myrtle Pearson | Spouse | — | 29 | ~1911 |
Census Appearances
1920
Cook, Illinois
Son, age 10
Cook, Illinois · implied b. ~1910 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Pearson |
| Given Name | William T. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Son, age 20
Cook, Illinois · implied b. ~1910 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Pearson |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Head, age 30
Cook-County, Illinois · implied b. ~1910 — 3 household members
| Surname | PEARSON |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Occupation | Shipping Clerk |
| Industry | Radio Mfg |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 936 |
| Highest Grade | H 2 |
| 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 Pearson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Johanna Pearson (~0.92 confidence) and father Emil Pearson (~0.92 confidence) and father Andrew Pearson (~0.60 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.81
Mother
Johanna Pearson
b. ~1881
Source mother
● Household
· direct · ~0.92
Father
Emil Pearson
b. ~1883
Source father
● Household
· direct · ~0.92
Father
Andrew Pearson
b. ~1905
Source father
● Household
· direct · ~0.6
This person
Anchor record
William Pearson
Head · 1940 · age 30 · b. ~1910 · Illinois
★ 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 — Cook-County, Illinois
Open full size
1940 US Federal Census — Cook-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00990-00353)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | William Pearson THIS PERSON | 30 | Head | Shipping Clerk | Illinois |
| 42 | Myrtle Pearson | 29 | Wife | — | Illinois |
| 43 | Ronald Pearson | 4 | Son | — | Illinois |
| 44 | Walter Wentzel | 56 | Head | Motorman | Illinois |
| 45 | Minnie Wentzel | 51 | Wife | — | Illinois |
| 46 | Hazel Wentzel | 27 | Daughter | Labeler | Illinois |
| 47 | Lucille Wentzel | 17 | Daughter | — | Illinois |
| 48 | Arthur Norstrand | 45 | Head | Foreman | Wisconsin |
| 49 | Rose Norstrand | 44 | Wife | — | Wisconsin |
| 50 | Bernard Norstrand | 19 | Son | Photographer | Wisconsin |
| 51 | Frank Lutzke | 48 | Head | Cutter | Germany |
| 52 | Sallie Lutzke | 43 | Wife | — | Illinois |
| 53 | Thomas Lutzke | 8 | Son | — | Illinois |
| 54 | Samuel Mueller | 49 | Head | Foreman | Wisconsin |
| 55 | Bertha Mueller | 40 | Wife | — | Illinois |
| 56 | Daniel Mueller | 18 | Son | — | Illinois |
| 57 | Betty Mueller | 16 | Daughter | — | Illinois |
| 58 | Harry Shiner | 50 | Head | Proprietor | Illinois |
| 59 | Emma Shiner | 45 | Wife | — | Illinois |
| 60 | Raymond Shiner | 20 | Son | — | Illinois |
| 61 | Edward Shiner | 16 | Son | — | Illinois |
| 62 | Morton Shiner | 13 | Son | — | Illinois |
| 63 | Charles A. Logan | 65 | Head | — | Holland |
| 64 | Bridget Logan | 54 | Wife | — | Ireland |
| 65 | Elizabeth Logan | 25 | Daughter | — | Illinois |
| 66 | Henry Logan | 29 | Son | Trucker | Illinois |
| 67 | Adolph Wagner | 51 | Head | Salesman | Illinois |
| 68 | Inga Wagner | 43 | Wife | — | Illinois |
| 69 | Mildred Wagner | 25 | Daughter | File Clerk | Illinois |
| 70 | Frank Mateja | 31 | Head | Foreman | Illinois |
| 71 | Angeline Mateja | 28 | Wife | — | Illinois |
| 72 | Jane Mateja | 5 | Daughter | — | Illinois |
| 73 | Ronald Mateja | 2 | Son | — | Illinois |
| 74 | George Bislawa | 42 | Head | Case Maker | Illinois |
| 75 | Frank Poicus | 27 | Head | Laborer | Illinois |
| 76 | Elizabeth Poicus | 25 | Wife | — | Illinois |
| 77 | Virginia Poicus | 4 | Daughter | — | Illinois |
| 78 | Joseph Doruss | 36 | Head | Foreman | Illinois |
| 79 | Anna Doruss | 33 | Wife | — | Illinois |
| 80 | Richard Doruss | 13 | Son | — | Illinois |
Pedigree Summary
William
Gen 1 · 3 parents
~0.81
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)