MJ
Marvin Johnson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Webster-County, Iowa
Our Model Tree links this Marvin Johnson across the 1930 and 1940 US Censuses in Webster-County, Iowa (XGBoost, ~Confirmed) — first a son (b.~1922), then head of a 9-person household.
Age 18
b. ~1922
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Webster-County, Iowa |
| Surname | Johnson |
| Given Name | Marvin E |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Gowrie Town |
| 1935 Residence (County) | Webster |
| Additional Details | |
| Class of Worker | 25 |
| Highest Grade | Hs 3 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Gowrie Town |
| Est. Birth Year | ~1922 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Marvin | Age | Birth yr |
|---|---|---|---|---|
| Dixie Johnson | Daughter | — | 8 | ~1932 |
| Roger Johnson | Son | — | 7 | ~1933 |
| Morris Johnson | Son | — | 15 | ~1925 |
| Gus Johnson | Head | — | 54 | ~1886 |
| Norma Johnson | Daughter | — | 17 | ~1923 |
| Eunice Johnson | Spouse | — | 43 | ~1897 |
| Marvin Johnson | Son | — | 18 | ~1922 |
| Jerry Johnson | Son | — | 11 | ~1929 |
| Donald Johnson | Son | — | 13 | ~1927 |
Census Appearances
1930
Webster, Iowa
Son, age 8
Webster, Iowa · implied b. ~1922 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Marvin |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Iowa |
| Occupation | none |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Webster-County, Iowa
Son, age 18
Webster-County, Iowa · implied b. ~1922 — 9 household members
| Surname | Johnson |
| Given Name | Marvin E |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Gowrie Town |
| 1935 Residence (County) | Webster |
| Class of Worker | 25 |
| Highest Grade | Hs 3 |
| 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 Marvin Johnson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Marvin Johnson
Son · 1940 · age 18 · b. ~1922 · Iowa
★ You are viewing this record
Sibling
Roger Johnson
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Johnson
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Norma Johnson
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dixie Johnson
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jerry Johnson
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Morris Johnson
Sibling · 1940 · age 15
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 — Webster-County, Iowa
Open full size
1940 US Federal Census — Webster-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01212-00282)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Lillie B Gray | 53 | Head | Housewife | Iowa |
| 2 | Martin S Swanson | 53 | Head | Blacksmith | Iowa |
| 3 | Adina J Swanson | 53 | Wife | — | Iowa |
| 4 | Charles Swanson | 19 | Son | — | Iowa |
| 5 | Viola A Babcock | 28 | Daughter | Housekeeper | Iowa |
| 6 | Dwight M Babcock | 7 | Grandson | — | Iowa |
| 7 | Mae A Brunson | 22 | Daughter | — | Iowa |
| 8 | Gloria R Brunson | 3 | Granddaughter | — | California |
| 9 | Ray D Brunson | 2 | Grandson | — | California |
| 10 | Frank E Tedford | 61 | Head | Proprietor | England |
| 11 | Laura G Tedford | 48 | Wife | — | Iowa |
| 12 | Bonnie J Tedford | 18 | Daughter | New Worker | Iowa |
| 13 | Beverly J Tedford | 9 | Daughter | — | Iowa |
| 14 | Albert J Swanson | 51 | Head | Foreman | Iowa |
| 15 | Florence M Swanson | 45 | Wife | Proprietor | Illinois |
| 16 | Richard K Swanson | 20 | Son | Helper | Iowa |
| 17 | Swan Ryberg | 78 | Father-in-law | — | Sweden |
| 18 | Ethel W Mccutchen | 35 | Sister-in-law | — | Illinois |
| 19 | Emmet Danielson | 61 | Head | — | Iowa |
| 20 | Wallace J Danielson | 33 | Son | Proprietor | Iowa |
| 21 | Eldon G Danielson | 26 | Son | Proprietor | Iowa |
| 22 | Theresa M Danielson | 8 | Granddaughter | — | Illinois |
| 23 | Andrew C Earley | 62 | Head | — | Iowa |
| 24 | Daisy G Earley | 59 | Wife | — | Kansas |
| 25 | Harvey M Earley | 32 | Son | Laborer | Iowa |
| 26 | Carl R Gustafson | 25 | Head | Proprietor | Iowa |
| 27 | Lydia A Gustafson | 22 | Wife | — | Nebraska |
| 28 | Gunnar S Sigurdson | 50 | Head | Custodian | Wisconsin |
| 29 | Sarah S Sigurdson | 54 | Wife | — | Sweden |
| 30 | Arthur G Sigurdson | 18 | Son | — | Iowa |
| 31 | Morris K Sigurdson | 15 | Son | — | Iowa |
| 32 | Gus E Johnson | 54 | Head | Engineer | Sweden |
| 33 | Eunice M Johnson | 43 | Wife | — | Iowa |
| 34 | Marvin E Johnson THIS PERSON | 18 | Son | — | Iowa |
| 35 | Norma D Johnson | 17 | Daughter | — | Iowa |
| 36 | Morris E Johnson | 15 | Son | — | Iowa |
| 37 | Donald E Johnson | 13 | Son | — | Iowa |
| 38 | Jerry D Johnson | 11 | Son | — | Iowa |
| 39 | Dixie J Johnson | 8 | Daughter | — | Iowa |
| 40 | Roger E Johnson | 7 | Son | — | Iowa |
Related Census Records
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)