HC
Harold Clark — 1940 US Census Record
Model Tree available1940 United States Federal Census · Morgan-County, Indiana
Our Model Tree links this Harold Clark across the 1920, 1930 and 1940 US Censuses in Morgan-County, Indiana (XGBoost, ~Confirmed), with identified parents Frank & Minnie — first a son (b.~1912), then head of a 4-person household.
Age 28
b. ~1912
Male
Son
Born: Indiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Morgan-County, Indiana |
| Surname | Clark |
| Given Name | Harold |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Clay Township |
| 1935 Residence (County) | Morgan |
| Additional Details | |
| Occupation | labor |
| Industry | father's farm |
| Class of Worker | PW |
| Hours Worked | 50 |
| Income (1939) | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same house |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Occupation | Labor |
| Township / Ward | Clay Township |
| Est. Birth Year | ~1912 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Harold | Age | Birth yr |
|---|---|---|---|---|
| Ruby Clark | Other | — | 25 | ~1915 |
| Harold Clark | Son | — | 28 | ~1912 |
| Minnie Clark | Spouse | — | 57 | ~1883 |
| Frank Clark | Head | — | 67 | ~1873 |
Census Appearances
1920
Morgan, Indiana
Son, age 7
Morgan, Indiana · implied b. ~1913 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Morgan, Indiana
Son, age 18
Morgan, Indiana · implied b. ~1912 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Harold |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Occupation | laborer |
| Industry | farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Morgan-County, Indiana
Son, age 28
Morgan-County, Indiana · implied b. ~1912 — 4 household members
| Surname | Clark |
| Given Name | Harold |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Clay Township |
| 1935 Residence (County) | Morgan |
| Occupation | labor |
| Industry | father's farm |
| Class of Worker | PW |
| Hours Worked | 50 |
| Income (1939) | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same house |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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 Clark across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Frank Clark (~0.92 confidence) and mother Minnie Clark (~0.92 confidence) and mother Maggie Clark (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Frank Clark
b. ~1874
Source father
● Household
· direct · ~0.92
Mother
Minnie Clark
b. ~1883
Source mother
● Household
· direct · ~0.92
Mother
Maggie Clark
b. ~1884
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Harold Clark
Son · 1940 · age 28 · b. ~1912 · Indiana
★ 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 — Morgan-County, Indiana
Open full size
1940 US Federal Census — Morgan-County, Indiana
Page Contents
16 people indexed on this census page (nara:1940:m-t0627-01081-00169)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Frank Clark | 67 | Head | Manager | Indiana |
| 42 | Minnie Clark | 57 | Wife | — | Indiana |
| 43 | Harold Clark THIS PERSON | 28 | son | Labor | Indiana |
| 44 | Ruby Clark | 25 | daughter-in-law | — | Indiana |
| 45 | Gerald Young | 32 | Head | Machine Operator | Indiana |
| 46 | Dorothy Young | 29 | wife | — | Indiana |
| 47 | Joyce Young | 11 | daughter | — | Indiana |
| 48 | T. J. Shelly | 60 | Head | Supt | Indiana |
| 49 | Sarah Shelly | 64 | wife | — | Indiana |
| 50 | Jack Hillman | 60 | Head | Labor | Illinois |
| 51 | Deela Hillman | 53 | wife | — | Indiana |
| 52 | Roscoe Hillman | 26 | son | Labor | Indiana |
| 53 | Harold Hillman | 20 | son | Labor | Indiana |
| 54 | Archie Hillman | 14 | son | — | Indiana |
| 55 | Phyllis Nixon | 7 | Granddaughter | — | Indiana |
| 56 | Cullen D. Mckean | 62 | Head | Janitor | Indiana |
Pedigree Summary
Harold
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)