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William Briggs — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this William Briggs across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents William & Jennie — first a son (b.~1909), then head of a 5-person household.
Age 31
b. ~1909
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Briggs |
| Given Name | William J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Platform man |
| Industry | Express Co |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 988 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Platform Man |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1909 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Robert Briggs | Son | — | 25 | ~1915 |
| William Briggs | Head | — | 71 | ~1869 |
| Jennie Briggs | Spouse | — | 66 | ~1874 |
| George Brooker | Other | — | 18 | ~1922 |
| William Briggs | Son | — | 31 | ~1909 |
Census Appearances
1920
Cook, Illinois
Son, age 11
Cook, Illinois · implied b. ~1909 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Briggs |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | Illinois |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Son, age 21
Cook, Illinois · implied b. ~1909 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Briggs |
| Given Name | William James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | Illinois |
| Occupation | Chauffeur |
| Industry | Railway Express |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 31
Cook-County, Illinois · implied b. ~1909 — 5 household members
| Surname | Briggs |
| Given Name | William J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Occupation | Platform man |
| Industry | Express Co |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 988 |
| 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 Briggs across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father William Briggs (~0.92 confidence) and mother Jennie Briggs (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Briggs
b. ~1868
Source father
● Household
· direct · ~0.92
Mother
Jennie Briggs
b. ~1874
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Briggs
Son · 1940 · age 31 · b. ~1909 · Illinois
★ You are viewing this record
Sibling
Robert Briggs
Sibling · 1940 · age 25
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
40 people indexed on this census page (nara:1940:m-t0627-00933-00350)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John Mc Carthy | 41 | Head | Watchman | Illinois |
| 2 | Katherine Mc Carthy | 41 | Wife | — | Illinois |
| 3 | John Mc Carthy | 18 | Son | — | Illinois |
| 4 | Phillip Mc Carthy | 13 | Son | — | Illinois |
| 5 | Catherine Mc Carthy | 9 | Daughter | — | Illinois |
| 6 | Robert Mc Carthy | 4 | Son | — | Illinois |
| 7 | William Pannenschmidt | 85 | Head | — | Germany |
| 8 | Helen Oliver | 50 | Daughter | — | Illinois |
| 9 | Steve Avors | 50 | Head | Peddler | Greece |
| 10 | Helen Avors | 35 | Wife | — | Greece |
| 11 | Jessie Avors | 15 | Daughter | — | Illinois |
| 12 | Constance Avors | 11 | Daughter | — | Illinois |
| 13 | Demetra Avors | 9 | Daughter | — | Illinois |
| 14 | George Avors | 7 | Son | — | Illinois |
| 15 | Tryphone Avors | 5 | Son | — | Illinois |
| 16 | Olympia Avors | 3 | Daughter | — | Illinois |
| 17 | Gust Purmpola | 35 | Boarder | Laborer | Greece |
| 18 | Catherine Purmpola | 14 | Niece | — | Illinois |
| 19 | James Bolos | 32 | Head | Peddler | Greece |
| 20 | Nick Boulos | 21 | Nephew | Waiter | Illinois |
| 21 | John Schierbaum | 61 | Head | — | Illinois |
| 22 | Sophie Harrison | 70 | Sister | — | Illinois |
| 23 | Charles Schierbaum | 66 | Brother | Watchman | Illinois |
| 24 | William Briggs | 71 | Head | — | Wisconsin |
| 25 | Jennie Briggs | 66 | Wife | — | Illinois |
| 26 | William J. Briggs THIS PERSON | 31 | Son | Platform Man | Illinois |
| 27 | Robert Briggs | 25 | Son | Carrier | Illinois |
| 28 | George Brooker | 18 | Nephew | — | Illinois |
| 29 | John Mc Hugh | 46 | Head | Truck Driver | Illinois |
| 30 | Clara Mc Hugh | 39 | Wife | — | Illinois |
| 31 | William Mc Hugh | 17 | Son | — | Illinois |
| 32 | Lucille Mc Hugh | 15 | Daughter | — | Illinois |
| 33 | Clara Mc Hugh | 13 | Daughter | — | Illinois |
| 34 | Helen Mc Hugh | 40 | Sister | Maid | Illinois |
| 35 | Thomas Mc Hugh | 39 | Brother | Helper | Illinois |
| 36 | Charles Hall | 45 | Head | Janitor | North Carolina |
| 37 | Ebert Hall | 45 | Wife | — | Georgia |
| 38 | Hazel Olivier | 29 | Head | — | Missouri |
| 39 | Lois Robinson | 14 | Lodger | — | Illinois |
| 40 | Robinson | None | — | — | — |
Related Census Records
Pedigree Summary
William + 1 sibling
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)