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Donald Davis — 1940 US Census Record
Model Tree available1940 United States Federal Census · Polk-County, Iowa
Our Model Tree links this Donald Davis across the 1920, 1930 and 1940 US Censuses in Polk-County, Iowa (XGBoost, ~Confirmed), with identified parents Edwin & Edward — first a son (b.~1917), then head of a 6-person household.
Age 23
b. ~1917
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Polk-County, Iowa |
| Surname | Davis |
| Given Name | Donald F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines City |
| 1935 Residence (County) | Polk |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | C 2 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Des Moines City |
| 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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Donald | Age | Birth yr |
|---|---|---|---|---|
| Marilyn Davis | Daughter | — | 11 | ~1929 |
| Betty Davis | Daughter | — | 20 | ~1920 |
| Edwin Davis | Head | — | 47 | ~1893 |
| Edwin Davis | Son | — | 24 | ~1916 |
| Donald Davis | Son | — | 23 | ~1917 |
| Nellie Davis | Spouse | — | 33 | ~1907 |
Census Appearances
1920
Polk, Iowa
Son, age 2
Polk, Iowa · implied b. ~1918 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Donald |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Illinois |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Polk, Iowa
Son, age 13
Polk, Iowa · implied b. ~1917 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Donald F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Illinois |
| Occupation | Caddy |
| Industry | Golf Links |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Polk-County, Iowa
Son, age 23
Polk-County, Iowa · implied b. ~1917 — 6 household members
| Surname | Davis |
| Given Name | Donald F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines City |
| 1935 Residence (County) | Polk |
| Income (1939) | 0 |
| Highest Grade | C 2 |
| 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 Edwin Davis (~0.92 confidence) and father Edward Davis (~0.92 confidence) and father Edwin Davis (~0.92 confidence) and mother Nellie Davis (~0.92 confidence) and mother Nellie Davis (~0.60 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.86
Father
Edwin Davis
b. ~1893
Source father
● Household
· direct · ~0.92
Father
Edward Davis
b. ~1894
Source father
● Household
· direct · ~0.92
Father
Edwin Davis
b. ~1894
Source father
● Household
· direct · ~0.92
Mother
Nellie Davis
b. ~1897
Source mother
● Household
· direct · ~0.92
Mother
Nellie Davis
b. ~1907
Source mother
● Household
· direct · ~0.6
This person
Anchor record
Donald Davis
Son · 1940 · age 23 · b. ~1917 · Iowa
★ You are viewing this record
Sibling
Edwin Davis
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Betty Davis
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marilyn Davis
Sibling · 1940 · age 11
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 — Polk-County, Iowa
Open full size
1940 US Federal Census — Polk-County, Iowa
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01195-00912)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Frank Severino | 17 | Son | — | Iowa |
| 2 | Kenneth Starkey | 27 | Head | Sales Distributor | No Dakota |
| 3 | Eloise Starkey | 26 | Wife | — | Iowa |
| 4 | Diane Starkey | 1 | Daughter | — | Iowa |
| 5 | Hazel Kelley | 20 | Helper | Housekeeper | Iowa |
| 6 | Chic Sr. Hendrickson | 52 | Head | Painter | Sweden |
| 7 | Edwin C. Davis | 47 | Head | Engineer | Iowa |
| 8 | Nellie M. Davis | 33 | Wife | — | Illinois |
| 9 | Edwin R. Davis | 24 | Son | — | Iowa |
| 10 | Donald F. Davis THIS PERSON | 23 | Son | — | Iowa |
| 11 | Betty J. Davis | 20 | Daughter | Film Finisher | Iowa |
| 12 | Marilyn Davis | 11 | Daughter | — | Iowa |
| 14 | Bessie Miller | 83 | Head | — | Illinois |
| 15 | Fred Miller | 39 | Son | Painter | Iowa |
| 16 | Pauline Creswell | 49 | Lodger | — | Nebraska |
| 17 | Frank Chiodo | 30 | Head | Bar Tender | Italy |
| 18 | Nad Chiodo | 62 | Father | — | Italy |
| 19 | Mary J. Chiodo | 53 | Mother | — | Italy |
| 20 | Mary Stella Chiodo | 20 | Sister | — | Italy |
| 21 | Fred Chiodo | 19 | Brother | Shoe Maker | Italy |
| 22 | Asa E. Heivlin | 40 | Head | Po Clerk | Iowa |
| 23 | Mabel Heivlin | 34 | Wife | — | Iowa |
| 24 | Russell Heivlin | 7 | Son | — | Iowa |
| 25 | Robert Mcbeth | 30 | Head | Draft. Engineer | So Dakota |
| 26 | Helen Mcbeth | 30 | Wife | — | Iowa |
| 27 | Elizabeth A. Mcbeth | 2 | Daughter | — | Iowa |
| 28 | Juanita Mcbeth | 1 | Daughter | — | Iowa |
| 29 | Joe Debonis | 34 | Head | Patrolman | Brazil |
| 30 | Florence Debonis | 29 | Wife | — | Iowa |
| 31 | James Parks | 36 | Head | Electrician | Scotland |
| 32 | Aileen Parks | 30 | Wife | Saleslady | Missouri |
| 33 | Anna Wingfield | 59 | Mother | — | Scotland |
| 34 | Pearl Higgins | 50 | Head | Salesman | Iowa |
| 35 | Nora Higgins | 35 | Wife | — | Iowa |
| 36 | Raymond Bartholomew | 26 | Head | Clerk | Iowa |
| 37 | Dorothy Bartholomew | 20 | Wife | — | Iowa |
| 38 | John Paul Bartholomew | 0 | Son | — | Iowa |
| 39 | Augustine Bliquez | 29 | Head | Clerk | New York |
| 40 | Clara Bliquez | 27 | Wife | — | Iowa |
Pedigree Summary
Donald + 3 siblings
Gen 1 · 5 parents
~0.86
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)