DC
Donald Clark — 1940 US Census Record
Model Tree available1940 United States Federal Census · Marion-County, Indiana
Our Model Tree links this Donald Clark across the 1910, 1920, 1930 and 1940 US Censuses in Marion-County, Indiana (XGBoost, ~Confirmed), with identified parents Charles & Lillian — first a head (b.~1903), then head of a 3-person household.
Age 37
b. ~1903
Male
Head
Born: Indiana
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Marion-County, Indiana |
| Surname | Clark |
| Given Name | Donald G. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | Indianapolis City |
| 1935 Residence (County) | Marion |
| Additional Details | |
| Occupation | Printer |
| Industry | News Paper Co |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1300 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Occupation | Printer |
| Township / Ward | Indianapolis City |
| Est. Birth Year | ~1903 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Donald | Age | Birth yr |
|---|---|---|---|---|
| Charles Clark | Son | — | 4 | ~1936 |
| Donald Clark | Head | — | 37 | ~1903 |
| Onetta Clark | Spouse | — | 36 | ~1904 |
Census Appearances
1910
Marion, Indiana
Son, age 6
Marion, Indiana · implied b. ~1904 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Donald G |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Speaks English | English |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1920
Marion, Indiana
Son, age 15
Marion, Indiana · implied b. ~1905 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Donald |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Marion, Indiana
Son, age 26
Marion, Indiana · implied b. ~1904 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Donald |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Indiana |
| Age at First Marriage | 26 |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Occupation | Printer |
| Industry | News Paper Co. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Marion-County, Indiana
Head, age 37
Marion-County, Indiana · implied b. ~1903 — 3 household members
| Surname | Clark |
| Given Name | Donald G. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | Indianapolis City |
| 1935 Residence (County) | Marion |
| Occupation | Printer |
| Industry | News Paper Co |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1300 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| 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 Donald Clark across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Charles Clark (~0.92 confidence) and mother Lillian Clark (~0.92 confidence) and mother Lilly Clark (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Charles Clark
b. ~1881
Source father
● Household
· direct · ~0.92
Mother
Lillian Clark
b. ~1882
Source mother
● Household
· direct · ~0.92
Mother
Lilly Clark
b. ~1882
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Donald Clark
Head · 1940 · age 37 · b. ~1903 · 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 — Marion-County, Indiana
Open full size
1940 US Federal Census — Marion-County, Indiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01130-00874)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Frank J. Grumm | 37 | Head | Salesman | Indiana |
| 2 | Marie J. G. Grumm | 34 | Wife | — | Kentucky |
| 3 | Richard C. Grumm | 5 | Son | — | Indiana |
| 4 | Grover W. Crice | 24 | Head | Salesman | Indiana |
| 5 | Dorotha E. Crice | 24 | Wife | — | Indiana |
| 6 | David John Crice | 3 | Son | — | Indiana |
| 7 | James W. Crice | 2 | Son | — | Indiana |
| 8 | Clarence E. Pierce | 34 | Head | Embalmer | Illinois |
| 9 | Catherine M. Pierce | 34 | Wife | — | Illinois |
| 10 | Clarence E. Pierce | 9 | Son | — | Indiana |
| 11 | Charles R. Pierce | 6 | Son | — | Indiana |
| 12 | Robert F. Abney | 37 | Head | Salesman | Indiana |
| 13 | Mary B. Abney | 31 | Wife | — | Indiana |
| 14 | Paul M. Abney | 17 | Son | — | Indiana |
| 15 | Betty J. Abney | 9 | Daughter | — | Indiana |
| 16 | Donald G. Clark THIS PERSON | 37 | Head | Printer | Indiana |
| 17 | Onetta Clark | 36 | Wife | — | Indiana |
| 18 | Charles D. Clark | 4 | Son | — | Indiana |
| 19 | Howard F. Mercer | 28 | Head | Carpenter | Indiana |
| 20 | Leah Mercer | 26 | Wife | Cashier | Indiana |
| 21 | Estella Mercer | 48 | Mother | Fitting Clothes | Indiana |
| 22 | Glenn S. Woodward | 38 | Head | Salesman | Indiana |
| 23 | Irene F. G. Woodward | 38 | Wife | — | Indiana |
| 24 | John M. Woodward | 12 | Son | Hod Carrier | Indiana |
| 25 | Robert M. Woodward | 6 | Son | — | Indiana |
| 26 | William F. G. Tract | 54 | Head | Truck Driver | Indiana |
| 27 | Emma Tract | 48 | Sister | — | Indiana |
| 28 | End Block #11 Here | None | And | — | — |
| 29 | William H. Borrowman | 55 | Head | Stock Keeper | Indiana |
| 30 | Rosina C. Borrowman | 49 | Wife | — | Indiana |
| 31 | Mary Jane Tracy | 17 | Niece | — | Indiana |
| 32 | Roy E. Degischer | 41 | Brother-in-law | Hat Cleaner | Indiana |
| 33 | Ancle Blaser | 31 | Head | Laborer | Indiana |
| 34 | Mildred G. Blaser | 37 | Wife | — | Indiana |
| 35 | Ancel Jr. Blaser | 14 | Son | — | Indiana |
| 36 | Eugene Blaser | 12 | Son | — | Indiana |
| 37 | William Blaser | 10 | Son | — | Indiana |
| 38 | Beverly Blaser | 8 | Daughter | — | Indiana |
| 39 | Verlis C. Waltman | 44 | Head | Carpenter | Indiana |
| 40 | Henrietta G. Waltman | 35 | Wife | Saleslady | Indiana |
Pedigree Summary
Donald
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)