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Donald Davis — 1940 US Census Record
Model Tree available1940 United States Federal Census · Harrison-County, Iowa
Our Model Tree links this Donald Davis across the 1920, 1930 and 1940 US Censuses in Harrison-County, Iowa (XGBoost, ~Confirmed), with identified parents Clarence & Millie — first a son (b.~1911), then head of a 5-person household.
Age 29
b. ~1911
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Harrison-County, Iowa |
| Surname | Davis |
| Given Name | Donald |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Dunlap Town |
| 1935 Residence (County) | Harrison |
| Additional Details | |
| Occupation | clerk |
| Industry | Post Office |
| Class of Worker | GW |
| Hours Worked | 44 |
| Income (1939) | 952 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Clerk |
| Township / Ward | Dunlap Town |
| Est. Birth Year | ~1911 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Donald | Age | Birth yr |
|---|---|---|---|---|
| Rowena Davis | Daughter | — | 17 | ~1923 |
| Margerete Davis | Daughter | — | 16 | ~1924 |
| Millie Davis | Head | — | 57 | ~1883 |
| Raymond Davis | Son | — | 26 | ~1914 |
| Donald Davis | Son | — | 29 | ~1911 |
Census Appearances
1920
Harrison, Iowa
Son, age 8
Harrison, Iowa · implied b. ~1912 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Donald |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Harrison, Iowa
Son, age 19
Harrison, Iowa · implied b. ~1911 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Donald J |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Harrison-County, Iowa
Son, age 29
Harrison-County, Iowa · implied b. ~1911 — 5 household members
| Surname | Davis |
| Given Name | Donald |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Dunlap Town |
| 1935 Residence (County) | Harrison |
| Occupation | clerk |
| Industry | Post Office |
| Class of Worker | GW |
| Hours Worked | 44 |
| Income (1939) | 952 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 Davis across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Clarence Davis (~0.92 confidence) and mother Millie Davis (~0.92 confidence) and mother Millie Davis (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Clarence Davis
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Millie Davis
b. ~1881
Source mother
● Household
· direct · ~0.92
Mother
Millie Davis
b. ~1883
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Donald Davis
Son · 1940 · age 29 · b. ~1911 · Iowa
★ You are viewing this record
Sibling
Rowena Davis
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Raymond Davis
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margerete Davis
Sibling · 1940 · age 16
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 — Harrison-County, Iowa
Open full size
1940 US Federal Census — Harrison-County, Iowa
Page Contents
38 people indexed on this census page (nara:1940:m-t0627-01166-00162)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | David Corey | 13 | son | — | Iowa |
| 2 | Raymond Corey | 5 | son | — | — |
| 3 | Clifford Soule | 34 | Head | Asst | South Dakota |
| 4 | Delila Soule | 27 | wife | — | Iowa |
| 5 | Byron Luther Gray | 79 | roomer | — | Ohio |
| 6 | Theo Jochims | 31 | Head | Salesman | Iowa |
| 7 | Mabel Jochims | 32 | wife | — | Iowa |
| 8 | Norma Jochims | 9 | daughter | — | Iowa |
| 9 | Fred Jahns | 56 | Head | Farmer | Iowa |
| 10 | Agusta Jahns | 50 | wife | — | Iowa |
| 11 | Richard Jahns | 24 | son | Helper | Iowa |
| 12 | Raymond Jahns | 24 | son | Helper | Iowa |
| 13 | Luther Frommholtz | 71 | Head | — | Pennsylvania |
| 14 | Amanda Murphy | 83 | renter | — | Iowa |
| 15 | Sam Lee | 66 | renter | — | Illinois |
| 16 | Marion Merritt | 27 | Head | Helper | Iowa |
| 17 | Erma Merritt | 27 | wife | — | Iowa |
| 18 | Richard Merritt | 6 | son | — | — |
| 19 | Berna Merritt | 4 | daughter | — | — |
| 20 | Elden Clement | 31 | Head | Asst. Janitor | Iowa |
| 21 | Millene Clement | 26 | wife | — | Iowa |
| 22 | Joyce Clement | 8 | daughter | — | Iowa |
| 23 | Pete Clement | 6 | son | — | Iowa |
| 24 | Frank Noel | 56 | Head | W.P.A. | Iowa |
| 25 | Ester Noel | 42 | wife | — | Iowa |
| 26 | Floyd Noel | 20 | son | Laborer | Iowa |
| 27 | Mary Alice Noel | 16 | daughter | — | Iowa |
| 28 | Verne Arlo Noel | 8 | son | — | Iowa |
| 31 | Lyle Clarey | 38 | Head | Track Foreman | Iowa |
| 32 | Fern Clarey | 29 | wife | — | Iowa |
| 33 | Beverly Clarey | 7 | daughter | — | Iowa |
| 34 | Shirley Clarey | 5 | daughter | — | — |
| 35 | Millie Davis | 57 | Head | — | Iowa |
| 36 | Donald Davis THIS PERSON | 29 | son | Clerk | Iowa |
| 37 | Raymond Davis | 26 | son | — | Iowa |
| 38 | Rowena Davis | 17 | daughter | — | Iowa |
| 39 | Margerete Davis | 16 | daughter | — | Iowa |
| 40 | Willis Roberts | 62 | Head | Street Commissioner | Iowa |
Pedigree Summary
Donald + 3 siblings
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)