CP
Clarence Parker — 1940 US Census Record
Linked across censuses1940 United States Federal Census · St.-Clair-County, Illinois
Our Model Tree links this Clarence Parker across the 1930 and 1940 US Censuses in St.-Clair-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1922), then head of a 9-person household.
Age 18
b. ~1922
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | St.-Clair-County, Illinois |
| Surname | Parker |
| Given Name | Clarence |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Prairie Du Long twp |
| 1935 Residence (County) | St. Clair |
| Additional Details | |
| Occupation | dairying |
| Industry | dairying |
| Class of Worker | NP |
| Hours Worked | 20 |
| Highest Grade | No 8 |
| 1935 Residence | Same house |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Dairying |
| Township / Ward | Prairie Du Long Twp |
| Est. Birth Year | ~1922 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Clarence | Age | Birth yr |
|---|---|---|---|---|
| Edward Parker | Head | — | 52 | ~1888 |
| Blanche Parker | Daughter | — | 20 | ~1920 |
| Donald Parker | Son | — | 8 | ~1932 |
| Paul Parker | Son | — | 26 | ~1914 |
| Clarence Parker | Son | — | 18 | ~1922 |
| Edward Parker | Son | — | 11 | ~1929 |
| Rita Parker | Daughter | — | 14 | ~1926 |
| William Parker | Son | — | 16 | ~1924 |
| Mary Parker | Spouse | — | 48 | ~1892 |
Census Appearances
1930
St Clair, …
Son, age 8
St Clair, Illinois · implied b. ~1922 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Parker |
| Given Name | Clarence S. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| 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 |
1940
St.-Clair-County, Illinois
Son, age 18
St.-Clair-County, Illinois · implied b. ~1922 — 9 household members
| Surname | Parker |
| Given Name | Clarence |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Prairie Du Long twp |
| 1935 Residence (County) | St. Clair |
| Occupation | dairying |
| Industry | dairying |
| Class of Worker | NP |
| Hours Worked | 20 |
| Highest Grade | No 8 |
| 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 Clarence Parker across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Clarence Parker
Son · 1940 · age 18 · b. ~1922 · Illinois
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Sibling
William Parker
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Parker
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Parker
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Blanche Parker
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paul Parker
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rita Parker
Sibling · 1940 · age 14
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-t0627-00882-00605)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Nick Schaefer | 61 | Head | Farming | Illinois |
| 2 | Philippina Schaefer | 59 | Wife | Seamstress | Illinois |
| 3 | William Schaefer | 25 | Son | Laborer | Illinois |
| 4 | Aloysius Schaefer | 23 | Son | Farming | Illinois |
| 5 | Clara Schaefer | 20 | Daughter | Housekeeper | Illinois |
| 6 | Paul Schaefer | 17 | Son | Farming | Illinois |
| 7 | Mary Schaefer | 59 | Sister | Housekeeper | Illinois |
| 8 | Edward L. Parker | 52 | Head | Farming | Illinois |
| 9 | Mary E. Parker | 48 | Wife | Dairy Lady | Illinois |
| 10 | Paul Parker | 26 | Son | Attendant | Illinois |
| 11 | Blanche Parker | 20 | Daughter | Factory Worker | Illinois |
| 12 | Clarence Parker THIS PERSON | 18 | Son | Dairying | Illinois |
| 13 | William Parker | 16 | Son | Dairying | Illinois |
| 14 | Rita Parker | 14 | Daughter | Dairying | Illinois |
| 15 | Edward J. Parker | 11 | Son | — | Illinois |
| 16 | Donald Parker | 8 | Son | — | Illinois |
| 17 | Christina Schaefer | 56 | Head | Farming | Illinois |
| 18 | Adele Schaefer | 28 | Daughter | — | Illinois |
| 19 | Sylvester Schaefer | 21 | Son | Farmer | Illinois |
| 20 | Raymond Schaefer | 18 | Son | Farmer | Illinois |
| 21 | Katie Becherer | 61 | Sister | — | Illinois |
| 22 | George Porcade | 66 | Head | Farmer | Illinois |
| 23 | Margaret Porcade | 63 | Wife | Farmer | Illinois |
| 24 | Floyd Porcade | 33 | Son | Farmer | Illinois |
| 25 | Charles Fisher | 38 | Head | Farmer | Illinois |
| 26 | Opal Fisher | 33 | Wife | Farming | Illinois |
| 27 | Bobby Joe Fisher | 9 | Son | — | Illinois |
| 28 | Jack Mcclure | 48 | Lodger | Farming | Illinois |
| 29 | Louis Phillips | 32 | Head | Farming | Illinois |
| 30 | Edna Phillips | 24 | Wife | — | Illinois |
| 31 | Audrey Phillips | 8 | Daughter | — | Illinois |
| 32 | Ben Phillips | 75 | Father | Farming | Illinois |
| 33 | Katherine Phillips | 66 | Mother | — | Illinois |
| 34 | August Wachtel | 44 | Head | Farming | Illinois |
| 35 | Elizabeth Wachtel | 38 | Wife | — | Illinois |
| 36 | Margaret Wachtel | 42 | Sister | Farming | Illinois |
| 37 | Wilmer Liason | 32 | Head | Laborer | Illinois |
| 38 | Ada Liason | 29 | Wife | — | Illinois |
| 39 | Norman Liason | 9 | Son | — | Illinois |
| 40 | Wilmer Jr. Liason | 6 | Son | — | Illinois |
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)