GJ
Gerald Johnson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Pottawattamie-County, Iowa
Our Model Tree links this Gerald Johnson across the 1930 and 1940 US Censuses in Pottawattamie-County, Iowa (XGBoost, ~Confirmed) — first a son (b.~1925), then head of a 7-person household.
Age 15
b. ~1925
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Pottawattamie-County, Iowa |
| Surname | Johnson |
| Given Name | Gerald D. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Hardin twp. |
| 1935 Residence (County) | Pottawattamie |
| Additional Details | |
| Class of Worker | 0 |
| Hours Worked | 6 |
| Highest Grade | H-1 |
| 1935 Residence | Same House |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Hardin Twp |
| Est. Birth Year | ~1925 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Gerald | Age | Birth yr |
|---|---|---|---|---|
| Lyle Johnson | Son | — | 2 | ~1938 |
| Shirley Johnson | Daughter | — | 11 | ~1929 |
| Gerald Johnson | Son | — | 15 | ~1925 |
| Mildred Johnson | Spouse | — | 41 | ~1899 |
| Audrey Johnson | Daughter | — | 9 | ~1931 |
| Jack Johnson | Head | — | 45 | ~1895 |
| Lorene Johnson | Daughter | — | ~1940 |
Census Appearances
1930
Pottawattamie, Iowa
Son, age 5
Pottawattamie, Iowa · implied b. ~1925 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Gerald D. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | none |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Pottawattamie-County, Iowa
Son, age 15
Pottawattamie-County, Iowa · implied b. ~1925 — 7 household members
| Surname | Johnson |
| Given Name | Gerald D. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Hardin twp. |
| 1935 Residence (County) | Pottawattamie |
| Class of Worker | 0 |
| Hours Worked | 6 |
| Highest Grade | H-1 |
| 1935 Residence | Same House |
| 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 Gerald Johnson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Gerald Johnson
Son · 1940 · age 15 · b. ~1925 · Iowa
★ You are viewing this record
Sibling
Audrey Johnson
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lorene Johnson
Sibling · 1940 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lyle Johnson
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Shirley Johnson
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 — Pottawattamie-County, Iowa
Open full size
1940 US Federal Census — Pottawattamie-County, Iowa
Page Contents
29 people indexed on this census page (nara:1940:m-t0627-01198-00215)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Jack W. Johnson | 45 | Head | Farm Operator | Iowa |
| 42 | Mildred A. Johnson | 41 | Wife | High School Cook | Iowa |
| 43 | Gerald D. Johnson THIS PERSON | 15 | Son | — | Iowa |
| 44 | Shirley June Johnson | 11 | Daughter | — | Iowa |
| 45 | Audrey Fern Johnson | 9 | Daughter | — | Iowa |
| 46 | Lyle Roger Johnson | 2 | Son | — | Iowa |
| 47 | Lorene Lynette Johnson | 0 | Daughter | — | Iowa |
| 48 | Carl Hansen | 40 | Head | Farm Operator | Iowa |
| 49 | Vava Hansen | 29 | Wife | — | Iowa |
| 50 | Wendell Hansen | 4 | Son | — | Iowa |
| 51 | Howard Bowers | 21 | Hired hand | Farm Helper | Iowa |
| 52 | Mayrella Wilson | 16 | Sister-in-law | Housework | Iowa |
| 53 | Glenn Craft | 36 | Head | Farm Operator | Iowa |
| 54 | Nora Craft | 31 | Wife | — | Iowa |
| 55 | Eileen Craft | 1 | Daughter | — | Iowa |
| 56 | Clyde Hurd | 22 | Hired hand | Farm Helper | Iowa |
| 57 | William H. Lentz | 51 | Head | Farm Operator | Iowa |
| 58 | Ethel S. Lentz | 47 | Wife | — | Iowa |
| 59 | Forest W. Lentz | 21 | Son | Farm Helper | Iowa |
| 60 | Carl A. O. Hauschild | 55 | Head | Farm Operator | Germany |
| 61 | Margaret Hauschild | 50 | Wife | — | Germany |
| 62 | Gertrude Hauschild | 27 | Daughter | Nurse R.N. | Nebraska |
| 63 | Anna Marie Hauschild | 21 | Daughter | — | Iowa |
| 64 | Helen Hauschild | 19 | Daughter | — | Iowa |
| 65 | David Beck | 68 | Father-in-law | — | Germany |
| 66 | Otto Zimmerman | 51 | Hired hand | Farm Helper | Missouri |
| 67 | Howard Brockman | 28 | Head | Farm Operator | Iowa |
| 68 | June A. Brockman | 26 | Wife | — | Iowa |
| 69 | Jo Anne Brockman | 5 | Daughter | — | Iowa |
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)