RB
Robert Bailey — 1940 US Census Record
Model Tree available1940 United States Federal Census · St.-Clair-County, Illinois
Our Model Tree links this Robert Bailey across the 1920, 1930 and 1940 US Censuses in St.-Clair-County, Illinois (XGBoost, ~Confirmed), with identified parents Isaac & Mabel — first a son (b.~1916), then head of a 5-person household.
Age 24
b. ~1916
Male
Son
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | St.-Clair-County, Illinois |
| Surname | Bailey |
| Given Name | Robert T. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Belleville |
| 1935 Residence (County) | St. Clair |
| Additional Details | |
| Occupation | Clerk |
| Industry | Drug Store |
| Class of Worker | PW |
| Hours Worked | 48 |
| Highest Grade | H-4 |
| 1935 Residence | Same house |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Clerk |
| Township / Ward | Belleville |
| Est. Birth Year | ~1916 |
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 Robert | Age | Birth yr |
|---|---|---|---|---|
| Isaac Bailey | Head | — | 50 | ~1890 |
| Sarah Stodder | Other | — | 51 | ~1889 |
| Pellis Bailey | Son | — | 18 | ~1922 |
| Robert Bailey | Son | — | 24 | ~1916 |
| Mabel Bailey | Spouse | — | 42 | ~1898 |
Census Appearances
1920
St Clair, …
Son, age 4
St Clair, Illinois · implied b. ~1916 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Bailey |
| Given Name | Robert J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
St Clair, …
Son, age 14
St Clair, Illinois · implied b. ~1916 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Bailey |
| Given Name | Robert T. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
St.-Clair-County, Illinois
Son, age 24
St.-Clair-County, Illinois · implied b. ~1916 — 5 household members
| Surname | Bailey |
| Given Name | Robert T. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Belleville |
| 1935 Residence (County) | St. Clair |
| Occupation | Clerk |
| Industry | Drug Store |
| Class of Worker | PW |
| Hours Worked | 48 |
| Highest Grade | H-4 |
| 1935 Residence | Same house |
| 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 Robert Bailey across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Isaac Bailey (~0.92 confidence) and mother Mabel Bailey (~0.92 confidence) and mother Mabel Bailey (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Isaac Bailey
b. ~1890
Source father
● Household
· direct · ~0.92
Mother
Mabel Bailey
b. ~1893
Source mother
● Household
· direct · ~0.92
Mother
Mabel Bailey
b. ~1898
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Bailey
Son · 1940 · age 24 · b. ~1916 · Illinois
★ You are viewing this record
Sibling
Pellis Bailey
Sibling · 1940 · age 18
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 — St.-Clair-County, Illinois
Open full size
1940 US Federal Census — St.-Clair-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00878-00329)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Carol Jean Stehlich | 5 | daughter | — | Illinois |
| 2 | George R. Paul | 28 | Head | Laborer | Tennessee |
| 3 | Mary Paul | 26 | wife | Packer | Illinois |
| 4 | Minnie Schroeder | 47 | Mother-in-law | — | Illinois |
| 5 | Charles Johnson | 38 | Head | Illinois | |
| 6 | Lillian Johnson | 25 | wife | Teacher | Illinois |
| 7 | Paul Roger | 2 | son | — | Illinois |
| 8 | George Meyer | 35 | Head | Sales Manager | Illinois |
| 9 | Elsie Meyer | 39 | wife | — | Illinois |
| 10 | Grace Meyer | 19 | daughter | Waitress | Illinois |
| 11 | Mother Helen | None | F | Priv. Home | — |
| 12 | Oscar Zink | 45 | Head | Meter Tester | Illinois |
| 13 | Lena Zink | 39 | wife | — | Illinois |
| 14 | Helen Mae Zink | 5 | daughter | — | Illinois |
| 15 | Simeon Bruns | 57 | Head | Retail | Illinois |
| 16 | Henrietta Bruns | 57 | wife | — | Illinois |
| 17 | Walter Bruns | 28 | son | Retail | Illinois |
| 18 | Josephine Bruns | 27 | daughter-in-law | — | Illinois |
| 19 | Henrietta Bruns | 5 | daughter | — | Illinois |
| 20 | Walter Bruns | 4 | son | — | Illinois |
| 21 | Robert Bruns | 0 | son | — | Illinois |
| 22 | Hilson Butts | 35 | Head | Clerk | Illinois |
| 23 | Hilda Butts | 35 | wife | — | Illinois |
| 24 | Shirley Ann Butts | 12 | daughter | — | Illinois |
| 25 | Gordian J. Fellner | 47 | Head | Foreman | Illinois |
| 26 | Addie Fellner | 46 | wife | — | Illinois |
| 27 | Shirley Lee Fellner | 11 | daughter | — | Illinois |
| 28 | Joseph Lowe | 65 | Head | Miner | England |
| 29 | Mary A. Lowe | 65 | wife | — | England |
| 30 | Earl L. Lowe | 21 | son | Laborer | Illinois |
| 31 | Henry Hehn | 59 | Head | Laborer | Illinois |
| 32 | Emma Hehn | 47 | wife | Cook | Illinois |
| 33 | Oliver Hehn | 25 | son | Chauffeur | Illinois |
| 34 | Isaac L. Bailey | 50 | Head | Miner | Illinois |
| 35 | Mabel S. Bailey | 42 | wife | Clerk | Illinois |
| 36 | Robert T. Bailey THIS PERSON | 24 | son | Clerk | Illinois |
| 37 | Pellis L. Bailey | 18 | son | Repair | Illinois |
| 38 | Sarah Stodder | 51 | Mother-in-law | Servant | Illinois |
| 39 | John Vook | 60 | Head | Miner | England |
| 40 | Isabel Vook | 57 | wife | — | Illinois |
Pedigree Summary
Robert + 1 sibling
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)