HB
Harold Baker — 1940 US Census Record
Model Tree available1940 United States Federal Census · St.-Clair-County, Illinois
Our Model Tree links this Harold Baker across the 1900, 1910, 1920, 1930 and 1940 US Censuses in St.-Clair-County, Illinois (XGBoost, ~Confirmed), with identified parents Martin & Gertrude — first a head (b.~1899), then head of a 5-person household.
Age 41
b. ~1899
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | St.-Clair-County, Illinois |
| Surname | Baker |
| Given Name | Harold |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Stookey Twp |
| 1935 Residence (County) | St. Clair |
| Additional Details | |
| Occupation | Attorney |
| Industry | Private Practice |
| Class of Worker | OA |
| Hours Worked | 50 |
| Income (1939) | 934 |
| Highest Grade | C 5 |
| 1935 Residence | Same house |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Attorney |
| Township / Ward | Stookey Twp |
| Est. Birth Year | ~1899 |
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 Harold | Age | Birth yr |
|---|---|---|---|---|
| Bernice Baker | Spouse | — | 32 | ~1908 |
| William Baker | Son | — | 7 | ~1933 |
| Douglas Baker | Son | — | 4 | ~1936 |
| Harold Baker | Head | — | 41 | ~1899 |
| Ian Baker | Son | — | 10 | ~1930 |
Census Appearances
1900
St Clair, …
Son, age 1
St Clair, Illinois · implied b. ~1899 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Baker |
| Given Name | Harold G. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Illinois |
| Birth Month | Feb |
| Birth Year | 1899 |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read | No |
| Can Write | No |
| Speaks English | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1910
St Clair, …
Son, age 11
St Clair, Illinois · implied b. ~1899 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Baker |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1920
St Clair, …
Son, age 20
St Clair, Illinois · implied b. ~1900 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Baker |
| Given Name | Harold G |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
St Clair, …
Head, age 31
St Clair, Illinois · implied b. ~1899 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Baker |
| Given Name | Harold |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 28 |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Lawyer |
| Industry | U. S. Attorney |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 18000 |
| Radio Set | R |
| Veteran | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
St.-Clair-County, Illinois
Head, age 41
St.-Clair-County, Illinois · implied b. ~1899 — 5 household members
| Surname | Baker |
| Given Name | Harold |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Stookey Twp |
| 1935 Residence (County) | St. Clair |
| Occupation | Attorney |
| Industry | Private Practice |
| Class of Worker | OA |
| Hours Worked | 50 |
| Income (1939) | 934 |
| Highest Grade | C 5 |
| 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 Harold Baker across 5 US Census years (1900, 1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Martin Baker (~0.92 confidence) and mother Gertrude Baker (~0.92 confidence) and mother Gertrude Baker (~0.92 confidence) and mother Leylande Baker (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Martin Baker
b. ~1862
Source father
● Household
· direct · ~0.92
Mother
Gertrude Baker
b. ~1878
Source mother
● Household
· direct · ~0.92
Mother
Gertrude Baker
b. ~1879
Source mother
● Household
· direct · ~0.92
Mother
Leylande Baker
b. ~1878
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Harold Baker
Head · 1940 · age 41 · b. ~1899 · 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 — 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-t0627-00882-00939)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Frank Kasal | 12 | Son | — | Illinois |
| 2 | George Gerke | 41 | Head | Delivery Man | Missouri |
| 3 | Carrie Gerke | 31 | Wife | — | Missouri |
| 4 | Louis Kastroufer | 62 | Head | Farmer | Bohemia |
| 5 | Louisa Kastroufer | 58 | Wife | — | Bohemia |
| 6 | Lillian Kastroufer | 33 | Dau | Miner | Illinois |
| 7 | Frank Kastroufer | 31 | Son | Miner | Illinois |
| 8 | Albert Cermak | 33 | Head | Chauffeur | Illinois |
| 9 | Lucille Cermak | 31 | Wife | — | Illinois |
| 10 | Frank Meisenborn | 26 | Head | Trucker | Indiana |
| 11 | Ellen Meisenborn | 25 | Wife | — | Illinois |
| 12 | Thomas Watkins | 60 | Head | Broker | Kentucky |
| 13 | Evelyn Watkins | 58 | Wife | — | Missouri |
| 14 | Margaret Jones | 30 | Maid | Maid | Illinois |
| 15 | William Koch | 33 | Head | Dentist | Illinois |
| 16 | Leona Koch | 30 | Wife | — | Missouri |
| 17 | William Koch | 5 | Son | — | Missouri |
| 18 | Richard Koch | 0 | Son | — | Illinois |
| 19 | Jessie Jones | 33 | Maid | Maid | Mississippi |
| 20 | David Jr. Clemson | 44 | Head | Operator | Illinois |
| 21 | Pauline Clemson | 54 | Wife | Cook | Illinois |
| 22 | Harold Baker THIS PERSON | 41 | Head | Attorney | Illinois |
| 23 | Bernice Baker | 32 | Wife | — | Illinois |
| 24 | William Baker | 7 | Son | — | Illinois |
| 25 | Douglas Baker | 4 | Son | — | Illinois |
| 26 | Ian Baker | 10 | Son | — | Illinois |
| 27 | Adolph Kraft | 51 | Head | — | Missouri |
| 28 | Ruby Grady | 24 | Maid | Maid | Mississippi |
| 29 | Walter Cashin | 45 | Head | Salesman | Illinois |
| 30 | Hattie Cashin | 44 | Wife | — | Kansas |
| 31 | Walter Cashin | 21 | Son | Yard Foreman | Illinois |
| 32 | Marilynne Cashin | 16 | Daughter | — | Illinois |
| 33 | Harry Wright | 45 | Head | Manager | Illinois |
| 34 | Ethel Wright | 51 | Wife | — | Indiana |
| 35 | Marinda Bouldin | 49 | Maid | Maid | Alabama |
| 36 | Francis Millard | 35 | Head | Doctor Dentistry | Illinois |
| 37 | Dorothy Millard | 29 | Wife | — | Illinois |
| 38 | Joseph Millard | 3 | Son | — | Missouri |
| 39 | Louise Henninger | 27 | Maid | Maid | North Dakota |
| 40 | Pathwell Pool | 60 | Head | Stock Broker | Illinois |
Pedigree Summary
Harold
Gen 1 · 4 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)