DC
Donald Clark — 1940 US Census Record
Model Tree available1940 United States Federal Census · Ingham-County, Michigan
Our Model Tree links this Donald Clark across the 1920, 1930 and 1940 US Censuses in Ingham-County, Michigan (XGBoost, ~Confirmed), with identified parents Raymond & Walter — first a head (b.~1917), then head of a 3-person household.
Age 23
b. ~1917
Male
Head
Born: Michigan
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Ingham-County, Michigan |
| Surname | Clark |
| Given Name | Donald |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Married |
| Birthplace | Michigan |
| 1935 Residence (City) | Aurelius twp |
| 1935 Residence (County) | Ingham |
| Additional Details | |
| Occupation | Engineer |
| Industry | S. M. A. Dept. |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1090 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Occupation | Engineer |
| Township / Ward | Aurelius Twp |
| Est. Birth Year | ~1917 |
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 |
|---|---|---|---|---|
| Lera Clark | Spouse | — | 24 | ~1916 |
| Allen Clark | Son | — | 2 | ~1938 |
| Donald Clark | Head | — | 23 | ~1917 |
Census Appearances
1920
Ingham, Michigan
Son, age 3
Ingham, Michigan · implied b. ~1917 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Donald R |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | Michigan |
| Occupation | none |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1930
Ingham, Michigan
Son, age 13
Ingham, Michigan · implied b. ~1917 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Donald R. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | Michigan |
| Can Read/Write | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Ingham-County, Michigan
Head, age 23
Ingham-County, Michigan · implied b. ~1917 — 3 household members
| Surname | Clark |
| Given Name | Donald |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Married |
| Birthplace | Michigan |
| 1935 Residence (City) | Aurelius twp |
| 1935 Residence (County) | Ingham |
| Occupation | Engineer |
| Industry | S. M. A. Dept. |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1090 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
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 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Raymond Clark (~0.92 confidence) and father Walter Clark (~0.83 confidence) and mother Eva Clark (~0.83 confidence) and mother Nada Clark (~0.92 confidence) and mother Nada Clark (~0.92 confidence). The pedigree spans 2 generations with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.88
Father
Raymond Clark
b. ~1894
Source father
● Household
· direct · ~0.92
Father
Walter Clark
b. ~1876
Source father>father
● Household
· direct · ~0.83
Mother
Eva Clark
b. ~1863
Source father>mother
● Household
· direct · ~0.83
Mother
Nada Clark
b. ~1893
Source mother
● Household
· direct · ~0.92
Mother
Nada Clark
b. ~1893
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Donald Clark
Head · 1940 · age 23 · b. ~1917 · Michigan
★ 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 — Ingham-County, Michigan
Open full size
1940 US Federal Census — Ingham-County, Michigan
Page Contents
38 people indexed on this census page (nara:1940:m-t0627-01759-00044)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Raymond H. Clark | 46 | Head | Farmer | Wisconsin |
| 2 | Mabel Clark | 47 | Wife | Housewife | Michigan |
| 3 | Connie M. Clark | 7 | Daughter | — | Michigan |
| 4 | Achiel Van De Moortel | 26 | Head | Maintainer | Michigan |
| 5 | Florence Van De Moortel | 21 | Wife | Housewife | Michigan |
| 6 | Nada Rae Van De Moortel | 0 | Daughter | — | Michigan |
| 7 | Howard Fuller | 28 | Head | Laborer | Michigan |
| 8 | Alice Fuller | 25 | Wife | Housewife | Michigan |
| 9 | Howard Fuller | 4 | Son | — | Michigan |
| 10 | Marilyn Fuller | 2 | Daughter | — | Michigan |
| 11 | Richard Fuller | 1 | Son | — | Michigan |
| 12 | Reginald Johnson | 27 | Head | Farmer | Michigan |
| 13 | Ruth Marie Johnson | 21 | Wife | Housewife | Nebraska |
| 14 | William Johnson | 3 | Son | — | Nebraska |
| 15 | Henry Johnson | 2 | Son | — | Michigan |
| 16 | Frank S. Abel | 80 | Head | Farmer | Michigan |
| 17 | Emma E. Abel | 74 | Wife | Housewife On Farm | Ohio |
| 18 | Russell Clark | 52 | Step-son | Farmer | Michigan |
| 19 | Margaret J. Clark | 40 | Sister-in-law | Housewife | Michigan |
| 20 | Ernest Lanker | 52 | Head | Carpenter | Ohio |
| 21 | Myrtle Lanker | 46 | Wife | Housewife | Canada-E |
| 22 | Herbert Lanker | 18 | Son | — | Montana |
| 23 | Merle Lanker | 16 | Son | — | Montana |
| 24 | Alta Lanker | 14 | Daughter | — | Montana |
| 25 | Doris Lanker | 10 | Daughter | — | Michigan |
| 26 | Keith Lanker | 7 | Son | — | Michigan |
| 27 | Ellen Morton | 80 | Head | Housewife | Canada-E |
| 28 | Clifford Morton | 44 | Son | Plasterer | Michigan |
| 29 | Charles A. Campbell | 57 | Head | Propeller Of Auto | Michigan |
| 30 | Pearl Campbell | 44 | Wife | Housewife | Michigan |
| 31 | Martin Duane R. Campbell | 5 | Adopted son | — | Michigan |
| 32 | Ora D. Johnson | 51 | Head | Maid | Michigan |
| 33 | Laurinka Clark | 74 | Head | Housewife | Michigan |
| 34 | Cecil Hartenburg | 25 | Grandson | Farmer | Michigan |
| 35 | Mabel Hartenburg | 17 | Grandson's wife | Housewife | Michigan |
| 36 | Donald Clark THIS PERSON | 23 | Head | Engineer | Michigan |
| 37 | Lera Clark | 24 | Wife | Housewife | Michigan |
| 38 | Allen Clark | 2 | Son | — | Michigan |
Pedigree Summary
Donald
Gen 1 · 3 parents
~0.92
Gen 2 · 2 grandparents
~0.83
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)