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Harold Davis — 1940 US Census Record
Model Tree available1940 United States Federal Census · Montgomery-County, Illinois
Our Model Tree links this Harold Davis across the 1920, 1930 and 1940 US Censuses in Montgomery-County, Illinois (XGBoost, ~Confirmed), with identified parents Frank & Frank — first a son (b.~1920), then head of a 6-person household.
Age 20
b. ~1920
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Montgomery-County, Illinois |
| Surname | Davis |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | North Litchfield Twp. |
| 1935 Residence (County) | Montgomery |
| Additional Details | |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 562 |
| Highest Grade | H 2 |
| 1935 Residence | Same house |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Laborer |
| Township / Ward | North Litchfield Twp |
| Est. Birth Year | ~1920 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Harold | Age | Birth yr |
|---|---|---|---|---|
| Alice Davis | Daughter | — | 6 | ~1934 |
| Frank Davis | Head | — | 50 | ~1890 |
| Shirley Davis | Son | — | 12 | ~1928 |
| John Davis | Son | — | 14 | ~1926 |
| Harold Davis | Son | — | 20 | ~1920 |
| Alice Davis | Spouse | — | 46 | ~1894 |
Census Appearances
1920
Montgomery, Illinois
Son, age 1
Montgomery, Illinois · implied b. ~1919 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Montgomery, Illinois
Son, age 11
Montgomery, Illinois · implied b. ~1919 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Harold T |
| 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/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Montgomery-County, Illinois
Son, age 20
Montgomery-County, Illinois · implied b. ~1920 — 6 household members
| Surname | Davis |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | North Litchfield Twp. |
| 1935 Residence (County) | Montgomery |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | PW |
| Hours Worked | 60 |
| Income (1939) | 562 |
| Highest Grade | H 2 |
| 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 Davis across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Frank Davis (~0.92 confidence) and father Frank Davis (~0.92 confidence) and mother Alice Davis (~0.92 confidence) and mother Alice Davis (~0.92 confidence) and mother Mary Davis (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Frank Davis
b. ~1890
Source father
● Household
· direct · ~0.92
Father
Frank Davis
b. ~1890
Source father
● Household
· direct · ~0.92
Mother
Alice Davis
b. ~1894
Source mother
● Household
· direct · ~0.92
Mother
Alice Davis
b. ~1894
Source mother
● Household
· direct · ~0.92
Mother
Mary Davis
b. ~1894
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Harold Davis
Son · 1940 · age 20 · b. ~1920 · Illinois
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Sibling
Shirley Davis
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Davis
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Davis
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 — Montgomery-County, Illinois
Open full size
1940 US Federal Census — Montgomery-County, Illinois
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-00860-00823)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Fred Bandy | 26 | Son | Laborer | Illinois |
| 2 | Nellie Bandy | 23 | Daughter in law | Laborer | Illinois |
| 3 | Chas. E. Halliday | 50 | Head | Laborer | Illinois |
| 4 | Nelle Halliday | 45 | Wife | — | Illinois |
| 5 | Eugene Halliday | 25 | Son | Laborer | Illinois |
| 6 | Robt. Halliday | 18 | Son | — | Illinois |
| 7 | L. L. Deaton | 70 | Head | Sexton | Illinois |
| 8 | W. D. Watkins | 56 | Head | Farming | Illinois |
| 9 | Ida Watkins | 50 | Wife | — | Illinois |
| 10 | Willard E. Turney | 31 | Head | Teacher | Illinois |
| 11 | May E. Crawford | 56 | Head | — | Illinois |
| 12 | James A. Waller | 61 | Head | Laborer | Illinois |
| 13 | J. Alfred Wylder | 73 | Head | — | Illinois |
| 14 | Samantha Wylder | 70 | Wife | — | Illinois |
| 15 | Mammie Hankins | 35 | Daughter | — | Illinois |
| 16 | Mary Anne Hankins | 9 | Daughter | — | Mississippi |
| 17 | George Eiler | 39 | Head | Station Fireman | Illinois |
| 18 | Allie Ruth Eiler | 37 | Wife | — | Arkansas |
| 19 | Neoma Eiler | 18 | Daughter | New Worker | Illinois |
| 20 | Charles William Eiler | 16 | Son | — | Illinois |
| 21 | Doris Jean Eiler | 9 | Daughter | — | Illinois |
| 22 | Carol Marie Eiler | 4 | Daughter | — | Illinois |
| 23 | R. O. Fraser | 40 | Head | Mechanic | Illinois |
| 24 | Lillie Fraser | 40 | Wife | — | Illinois |
| 25 | Bernie Fraser | 19 | Daughter | — | Illinois |
| 26 | Marjorie Fraser | 12 | Daughter | — | Illinois |
| 27 | Robert Fraser | 10 | Son | — | Illinois |
| 28 | Mary Ann Fraser | 5 | Daughter | — | Illinois |
| 29 | Marilyn Fraser | 2 | Daughter | — | Illinois |
| 30 | John W. Jr. Paar | 29 | Head | Laborer | Illinois |
| 31 | Willa Paar | 30 | Wife | — | Kentucky |
| 32 | Donna May Paar | 6 | Daughter | — | Illinois |
| 33 | Minnie Rouffy | 78 | Head | — | Illinois |
| 34 | Frank B. Davis | 50 | Head | Farming | Illinois |
| 35 | Alice Davis | 46 | Wife | — | Illinois |
| 36 | Harold Davis THIS PERSON | 20 | Son | Laborer | Illinois |
| 37 | John Davis | 14 | Son | — | Illinois |
| 38 | Shirley Davis | 12 | Son | — | Illinois |
| 39 | Alice Jean Davis | 6 | Daughter | — | Illinois |
Pedigree Summary
Harold + 3 siblings
Gen 1 · 5 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)