DJ
Donald Johnson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Davis-County, Iowa
Our Model Tree links this Donald Johnson across the 1920, 1930 and 1940 US Censuses in Davis-County, Iowa (XGBoost, ~Confirmed), with identified parents Warren & Warren — first a son (b.~1920), then head of a 5-person household.
Age 20
b. ~1920
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Davis-County, Iowa |
| Surname | Johnson |
| Given Name | Donald |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Fox River Township |
| 1935 Residence (County) | Davis County |
| Additional Details | |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | NP |
| Hours Worked | 70 |
| Income (1939) | 555 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Laborer |
| Township / Ward | Fox River Township |
| Est. Birth Year | ~1920 |
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 |
|---|---|---|---|---|
| Warren Johnson | Head | — | 50 | ~1890 |
| Forest Johnson | Son | — | 16 | ~1924 |
| Dale Johnson | Son | — | 18 | ~1922 |
| Donald Johnson | Son | — | 20 | ~1920 |
| Rhena Johnson | Spouse | — | 47 | ~1893 |
Census Appearances
1920
Davis, Iowa
Son, age
Davis, Iowa · implied b. ~1920 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Donald |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Davis, Iowa
Son, age 10
Davis, Iowa · implied b. ~1920 — 49 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Donald |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| 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
Davis-County, Iowa
Son, age 20
Davis-County, Iowa · implied b. ~1920 — 5 household members
| Surname | Johnson |
| Given Name | Donald |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Fox River Township |
| 1935 Residence (County) | Davis County |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | NP |
| Hours Worked | 70 |
| Income (1939) | 555 |
| Highest Grade | No 8 |
| 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 Johnson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Warren Johnson (~0.92 confidence) and father Warren Johnson (~0.92 confidence) and mother Rhena Johnson (~0.92 confidence) and mother Alvena Johnson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Warren Johnson
b. ~1890
Source father
● Household
· direct · ~0.92
Father
Warren Johnson
b. ~1890
Source father
● Household
· direct · ~0.92
Mother
Rhena Johnson
b. ~1893
Source mother
● Household
· direct · ~0.92
Mother
Alvena Johnson
b. ~1893
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Donald Johnson
Son · 1940 · age 20 · b. ~1920 · Iowa
★ You are viewing this record
Sibling
Dale Johnson
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Forest Johnson
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 — Davis-County, Iowa
Open full size
1940 US Federal Census — Davis-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01154-00140)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Olive Barker | 49 | Wife | — | Missouri |
| 42 | Winifred Moore | 38 | Head | Farmer | Iowa |
| 43 | Zelma Moore | 36 | Wife | — | Iowa |
| 44 | Haldo Moore | 14 | Son | — | Iowa |
| 45 | Willis Moore | 12 | Son | — | Iowa |
| 46 | Roland Moore | 8 | Son | — | Iowa |
| 47 | Charles Haggin | 74 | Head | — | Iowa |
| 48 | Mary Haggin | 69 | Wife | — | Iowa |
| 49 | Ray Haggin | 39 | Son | Farmer | Iowa |
| 50 | Ursula Haggin | 35 | Daughter | — | Iowa |
| 51 | Dwight Crocker | 30 | Head | Farmer | Iowa |
| 52 | Ermal Crocker | 25 | Wife | — | Iowa |
| 53 | Ivan Crocker | 2 | Son | — | Iowa |
| 54 | Ralph Mcelderry | 36 | Head | Farmer | Iowa |
| 55 | Freda Mcelderry | 39 | Wife | — | Iowa |
| 56 | Neva Mcelderry | 11 | Daughter | — | Iowa |
| 57 | Irvin Mcelderry | 9 | Son | — | Iowa |
| 58 | Inylane Mcelderry | 8 | Daughter | — | Iowa |
| 59 | Stanley Mcelderry | 2 | Son | — | Iowa |
| 60 | Bert Henderson | 53 | Head | Farmer | Iowa |
| 61 | Elza Henderson | 50 | Wife | — | Iowa |
| 62 | Zelma Henderson | 31 | Daughter | — | Iowa |
| 63 | Hansel Henderson | 28 | Son | Laborer | Iowa |
| 64 | Clare Henderson | 24 | Son | Laborer | Iowa |
| 65 | Earl Merryman | 19 | Head | Farmer | Iowa |
| 66 | Beulah Merryman | 20 | Wife | — | Iowa |
| 67 | Marion Robinson | 57 | Head | Farmer | Iowa |
| 68 | Raymond Robinson | 17 | Son | Laborer | Iowa |
| 69 | Gaye Robinson | 15 | Daughter | — | Iowa |
| 70 | William Robinson | 12 | Son | — | Iowa |
| 71 | Warren Johnson | 50 | Head | Farmer | Iowa |
| 72 | Rhena Johnson | 47 | Wife | — | Iowa |
| 73 | Donald Johnson THIS PERSON | 20 | Son | Laborer | Iowa |
| 74 | Dale Johnson | 18 | Son | Laborer | Iowa |
| 75 | Forest Johnson | 16 | Son | Laborer | Iowa |
| 76 | Chester Wilfawn | 37 | Head | Farmer | Iowa |
| 77 | Lulu Wilfawn | 31 | Wife | — | Iowa |
| 78 | Marietta Wilfawn | 9 | Daughter | — | Iowa |
| 79 | Marylyn Wilfawn | 7 | Daughter | — | Iowa |
| 80 | John Hosey | 75 | Head | Farmer | Missouri |
Pedigree Summary
Donald + 2 siblings
Gen 1 · 4 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)