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Adolph Johnson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Wapello-County, Iowa
Our Model Tree links this Adolph Johnson across the 1920, 1930 and 1940 US Censuses in Wapello-County, Iowa (XGBoost, ~Confirmed), with identified parents William & Ellen — first a head (b.~1900), then head of a 8-person household.
Age 40
b. ~1900
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Wapello-County, Iowa |
| Surname | Johnson |
| Given Name | Adolph F. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Rural |
| 1935 Residence (County) | Wapello |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 40 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Iowa |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Farmer |
| Township / Ward | Competine Township |
| Est. Birth Year | ~1900 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Adolph | Age | Birth yr |
|---|---|---|---|---|
| Loren Johnson | Son | — | 16 | ~1924 |
| Marie Johnson | Spouse | — | 39 | ~1901 |
| Kenneth Johnson | Son | — | 7 | ~1933 |
| Rex Johnson | Son | — | 17 | ~1923 |
| Adolph Johnson | Head | — | 40 | ~1900 |
| Lucille Johnson | Daughter | — | 13 | ~1927 |
| Ruth Johnson | Daughter | — | 11 | ~1929 |
| Helen Johnson | Daughter | — | 18 | ~1922 |
Census Appearances
1920
Keokuk, Iowa
Son, age 21
Keokuk, Iowa · implied b. ~1899 — 12 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Adolph F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Farm laborer |
| Industry | Home farm |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Wapello, Iowa
Head, age 31
Wapello, Iowa · implied b. ~1899 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Adolph |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 21 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | VVVV |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 2.00 |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Wapello-County, Iowa
Head, age 40
Wapello-County, Iowa · implied b. ~1900 — 8 household members
| Surname | Johnson |
| Given Name | Adolph F. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Rural |
| 1935 Residence (County) | Wapello |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 40 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Iowa |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Adolph Johnson across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage. Identified parents: father William Johnson (~0.92 confidence) and mother Ellen Johnson (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Johnson
b. ~1870
Source father
● Household
· direct · ~0.92
Mother
Ellen Johnson
b. ~1879
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Adolph Johnson
Head · 1940 · age 40 · b. ~1900 · Iowa
★ 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 — Wapello-County, Iowa
Open full size
1940 US Federal Census — Wapello-County, Iowa
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01209-01067)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John D. Harris | 73 | Head | Farmer | Iowa |
| 2 | Phoebe E. Harris | 44 | Daughter | House Servant | Iowa |
| 3 | Adrain J. Cameron | 36 | Lodger | Mill Operator | Texas |
| 4 | Adolph F. Johnson THIS PERSON | 40 | Head | Farmer | Illinois |
| 5 | Marie R. Johnson | 39 | Wife | — | Illinois |
| 6 | Helen M. Johnson | 18 | Daughter | — | Iowa |
| 7 | Rex H. Johnson | 17 | Son | — | Iowa |
| 8 | Loren A. Johnson | 16 | Son | — | Iowa |
| 9 | Lucille E. Johnson | 13 | Daughter | — | Iowa |
| 10 | Ruth M. Johnson | 11 | Daughter | — | Iowa |
| 11 | Kenneth E. Johnson | 7 | Son | — | Iowa |
| 12 | Lowell L. Holghauser | 31 | Head | Farmer | Iowa |
| 13 | Catherine E. Holghauser | 31 | Wife | — | Iowa |
| 14 | Leo V. Duke | 19 | Farm Hand | Farm Hand | Iowa |
| 15 | Charles T. Fleming | 51 | Head | Common Laborer | Indiana |
| 16 | Jessie M. Fleming | 45 | Wife | — | Tennessee |
| 17 | Aris J. Fleming | 19 | Daughter | House Work | Iowa |
| 18 | Charles Jr. Fleming | 17 | Son | Truck Driver | Iowa |
| 19 | William T. Fleming | 13 | Son | — | Iowa |
| 20 | Richard T. Fleming | 11 | Son | — | Iowa |
| 21 | Harold D. Fleming | 7 | Son | — | Iowa |
| 22 | Naomi M. Fleming | 4 | Daughter | — | Iowa |
| 23 | Ruby H. Watts | 51 | Head | House Work | Kansas |
| 24 | Campbell F. Watts | 22 | Son | — | Iowa |
| 25 | Richard D. Watts | 19 | Son | — | Iowa |
| 26 | George P. Holghauser | 62 | Head | Retired Farmer | Iowa |
| 27 | William P. Van Hammer | 67 | Head | Farmer | Iowa |
| 28 | Mallie Van Hammer | 60 | Wife | — | Iowa |
| 29 | Harry Sauer | 47 | Head | Farmer | Iowa |
| 30 | Amba F. Sauer | 46 | Wife | — | Iowa |
| 31 | Aldo L. Sauer | 15 | Son | — | Iowa |
| 32 | Victor L. Sauer | 11 | Son | — | Iowa |
| 33 | Carol J. Sauer | 8 | Daughter | — | Iowa |
| 34 | Ernest Dan Hockersley | 67 | Head | Pension | Iowa |
| 35 | Laurel B. Hockersley | 66 | Wife | Pension | Iowa |
| 36 | William J. Craft | 72 | Head | Retired Farmer | Pennsylvania |
| 37 | Harry R. Sterling | 27 | Head | Farmer | Iowa |
| 38 | Lillian H. Sterling | 28 | Wife | — | Iowa |
| 39 | Harry R. Jr. Sterling | 5 | Son | — | Iowa |
Pedigree Summary
Adolph
Gen 1 · 2 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)