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Harold Davis — 1940 US Census Record
Model Tree available1940 United States Federal Census · Effingham-County, Illinois
Our Model Tree links this Harold Davis across the 1920, 1930 and 1940 US Censuses in Effingham-County, Illinois (XGBoost, ~Confirmed), with identified parents C & Cleo — first a son (b.~1915), then head of a 9-person household.
Age 25
b. ~1915
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Effingham-County, Illinois |
| Surname | Davis |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Jackson Twp |
| 1935 Residence (County) | Effingham |
| Additional Details | |
| Occupation | Laborer |
| Industry | Paper Mill Co |
| Class of Worker | PW |
| Hours Worked | 50 |
| Income (1939) | 58 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Laborer |
| Township / Ward | Jackson Twp |
| Est. Birth Year | ~1915 |
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 Harold | Age | Birth yr |
|---|---|---|---|---|
| Mary Davis | Daughter | — | 16 | ~1924 |
| Cleo Davis | Head | — | 47 | ~1893 |
| Sylvester Davis | Son | — | 14 | ~1926 |
| Harold Davis | Son | — | 25 | ~1915 |
| Leo Davis | Son | — | 13 | ~1927 |
| George Davis | Son | — | 19 | ~1921 |
| Varden Davis | Son | — | 21 | ~1919 |
| Walter Davis | Son | — | 10 | ~1930 |
| Pearl Davis | Spouse | — | 42 | ~1898 |
Census Appearances
1920
Effingham, Illinois
Son, age 4
Effingham, Illinois · implied b. ~1916 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Harold G |
| 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
Effingham, Illinois
Son, age 14
Effingham, Illinois · implied b. ~1916 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Effingham-County, Illinois
Son, age 25
Effingham-County, Illinois · implied b. ~1915 — 9 household members
| Surname | Davis |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Jackson Twp |
| 1935 Residence (County) | Effingham |
| Occupation | Laborer |
| Industry | Paper Mill Co |
| Class of Worker | PW |
| Hours Worked | 50 |
| Income (1939) | 58 |
| Highest Grade | No 8 |
| 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 Harold Davis across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father C Davis (~0.92 confidence) and father Cleo Davis (~0.92 confidence) and father Giles Davis (~0.92 confidence) and mother Pearl Davis (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
C Davis
b. ~1893
Source father
● Household
· direct · ~0.92
Father
Cleo Davis
b. ~1893
Source father
● Household
· direct · ~0.92
Father
Giles Davis
b. ~1893
Source father
● Household
· direct · ~0.92
Mother
Pearl Davis
b. ~1898
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Harold Davis
Son · 1940 · age 25 · b. ~1915 · Illinois
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Sibling
Walter Davis
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Sylvester Davis
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Davis
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Davis
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Leo Davis
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Varden Davis
Sibling · 1940 · age 21
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 — Effingham-County, Illinois
Open full size
1940 US Federal Census — Effingham-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00800-00294)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Caroline Busse | 21 | Daughter | Teacher | Illinois |
| 2 | Nora Busse | 18 | Daughter | — | Illinois |
| 3 | Sherman Busse | 16 | Son | — | Illinois |
| 4 | Ashley Sinklier | 58 | Head | Farmer | Illinois |
| 5 | Edna Sinklier | 54 | Wife | — | Illinois |
| 6 | Leonard Sinklier | 15 | Son | — | Illinois |
| 7 | Clara Dayle Sinklier | 12 | Daughter | — | Illinois |
| 8 | Charles Parks | 35 | Head | Farmer | Illinois |
| 9 | Leona Parks | 32 | Wife | — | Illinois |
| 10 | Allyn Evans | 22 | Nephew | Farm Helper | Illinois |
| 11 | Rachel Evans | 22 | Niece | — | Illinois |
| 12 | Nancy Jean Evans | 0 | Grand Niece | — | Illinois |
| 13 | Earl W. Myers | 34 | Head | W.P.A. Laborer | Illinois |
| 14 | Gladys Myers | 33 | Wife | — | Illinois |
| 15 | Carol Mae Myers | 8 | Daughter | — | Colorado |
| 16 | Leroy G. Myers | 7 | Son | — | Illinois |
| 17 | Cleo Davis | 47 | Head | Labor | Illinois |
| 18 | Pearl Davis | 42 | Wife | — | Illinois |
| 19 | Harold Davis THIS PERSON | 25 | Son | Laborer | Illinois |
| 20 | Varden Davis | 21 | Son | Farmer | Illinois |
| 21 | George Jr. Davis | 19 | Son | — | Illinois |
| 22 | Mary Davis | 16 | Daughter | Helps Mother | Illinois |
| 23 | Sylvester Davis | 14 | Son | — | Illinois |
| 24 | Leo Davis | 13 | Son | — | Illinois |
| 25 | Walter Davis | 10 | Son | — | Illinois |
| 26 | Emma Sinklier | 64 | Head | — | Illinois |
| 27 | Voris B. Hilerte | 19 | Grand Son | Farmer | Illinois |
| 28 | Harold Hilerte | 13 | Grand Son | — | Illinois |
| 29 | Emerson Patton | 60 | Head | Farmer | Illinois |
| 30 | Helen E. Patton | 57 | Wife | — | Illinois |
| 31 | Theodore Patton | 25 | Son | Farm Helper | Arkansas |
| 32 | Harry B. Clear | 49 | Head | Distributor Of Farm Produce | Nebraska |
| 33 | Ollie A. Clear | 44 | Wife | — | Illinois |
| 34 | Marjorie Clear | 19 | Daughter | Telephone Oper | Illinois |
| 35 | Ira B. Clear | 17 | Son | — | Illinois |
| 36 | James W. Clear | 11 | Son | — | Illinois |
| 37 | Jerry A. Clear | 5 | Son | — | Illinois |
| 38 | B. Cougill | 21 | Son | Farmer | Illinois |
| 39 | Frances Cougill | 19 | Daughter | Helps Mother | Illinois |
| 40 | Katheryn Joy Cougill | 0 | Grand dau | — | Illinois |
Related Census Records
Pedigree Summary
Harold + 6 siblings
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)