MJ
Martin Johnson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Otoe-County, Nebraska
Our Model Tree links this Martin Johnson across the 1920, 1930 and 1940 US Censuses in Otoe-County, Nebraska (XGBoost, ~Confirmed), with identified parents Martin & Alma — first a son (b.~1901), then head of a 3-person household.
Age 39
b. ~1901
Male
Son
Born: Nebraska
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Otoe-County, Nebraska |
| Surname | Johnson |
| Given Name | Martin J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Nebraska |
| 1935 Residence (City) | Nebr. City |
| 1935 Residence (County) | Otoe |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farming |
| Class of Worker | OA |
| Hours Worked | 48 |
| Income (1939) | 0 |
| Highest Grade | No 0 |
| 1935 Residence | Nebraska |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
| Occupation | Farmer |
| Township / Ward | Otoe Precinct |
| Est. Birth Year | ~1901 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Martin | Age | Birth yr |
|---|---|---|---|---|
| Martin Johnson | Head | — | 75 | ~1865 |
| Martin Johnson | Son | — | 39 | ~1901 |
| Alma Johnson | Spouse | — | 62 | ~1878 |
Census Appearances
1920
Otoe, Nebraska
Son, age 19
Otoe, Nebraska · implied b. ~1901 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Martin |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Nebraska |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Norway |
| Occupation | Laborer |
| Industry | Home farm |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
1930
Otoe, Nebraska
Son, age 29
Otoe, Nebraska · implied b. ~1901 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Martin J |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Nebraska |
| Age at First Marriage | 29 |
| Father's Birthplace | Denmark |
| Mother's Birthplace | Iowa |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | VVVV |
| Can Read/Write | Yes |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
1940
Otoe-County, Nebraska
Son, age 39
Otoe-County, Nebraska · implied b. ~1901 — 3 household members
| Surname | Johnson |
| Given Name | Martin J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Nebraska |
| 1935 Residence (City) | Nebr. City |
| 1935 Residence (County) | Otoe |
| Occupation | Farmer |
| Industry | Farming |
| Class of Worker | OA |
| Hours Worked | 48 |
| Income (1939) | 0 |
| Highest Grade | No 0 |
| 1935 Residence | Nebraska |
| Birth State | Nebraska |
| Birth Country | United States |
| Birthplace (normalized) | nebraska |
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 Martin Johnson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Martin Johnson (~0.92 confidence) and mother Alma Johnson (~0.92 confidence) and mother Alma Johnson (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Martin Johnson
b. ~1867
Source father
● Household
· direct · ~0.92
Mother
Alma Johnson
b. ~1878
Source mother
● Household
· direct · ~0.92
Mother
Alma Johnson
b. ~1879
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Martin Johnson
Son · 1940 · age 39 · b. ~1901 · Nebraska
★ 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 — Otoe-County, Nebraska
Open full size
1940 US Federal Census — Otoe-County, Nebraska
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-02259-00753)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Lois M. Cole | 10 | Daughter | — | Nebraska |
| 42 | Edward H. Wells | 77 | Head | Farmer | Nebraska |
| 43 | Sam Wells | 67 | Head | Farmer | Tennessee |
| 44 | Rollan R. Wells | 36 | Son | Farm Labor | Nebraska |
| 45 | Edward E. Wells | 29 | Head | Carpenter | Nebraska |
| 46 | Esther F. Wells | 23 | Wife | — | Nebraska |
| 47 | Esther L. Wells | 1 | Daughter | — | Nebraska |
| 48 | Gurnie F. Russell | 28 | Head | Farm Labor | Nebraska |
| 49 | Roy A. Davis | 50 | Head | Farmer | Nebraska |
| 50 | Sarah J. Davis | 37 | Wife | — | Nebraska |
| 51 | C. Robert Davis | 16 | Son | Farm Labor | Nebraska |
| 52 | John E. R. Clayton | 67 | Head | Farmer | Nebraska |
| 53 | Evaline B. Clayton | 56 | Wife | — | Illinois |
| 54 | John Robert Clayton | 22 | Son | Farmer | Nebraska |
| 55 | Helen E. Clayton | 24 | Wife | — | Iowa |
| 56 | F. W. Theodore Hauptman | 67 | Head | — | Nebraska |
| 57 | Barbara M. Hauptman | 63 | Wife | — | Nebraska |
| 58 | Evaline D. Hauptman | 40 | Daughter | — | Nebraska |
| 59 | Eldon Hauptman | 36 | Son | Farmer | Nebraska |
| 60 | Roland J. Hauptman | 26 | Son | Farmer | Nebraska |
| 61 | Robert D. Hauptman | 32 | Head | Common Labor | Nebraska |
| 62 | Rhobie D. Hauptman | 24 | Wife | — | Nebraska |
| 63 | Stella E. Hauptman | 7 | Daughter | — | Nebraska |
| 64 | Rhobie D. Hauptman | 6 | Daughter | — | Nebraska |
| 65 | Joe Robert Hauptman | 1 | Son | — | Nebraska |
| 66 | John R. D. Ledner | 50 | Head | Farmer | Nebraska |
| 67 | Jessie Ledner | 43 | Wife | — | Nebraska |
| 68 | Jean M. Ledner | 4 | Orphan | — | Nebraska |
| 69 | Joseph S. D. Hartley | 40 | Head | Farmer | Nebraska |
| 70 | Alice L. Hartley | 41 | Wife | — | Oklahoma |
| 71 | Joseph M. Hartley | 20 | Son | — | Nebraska |
| 72 | S. Frances Hartley | 18 | Daughter | — | Nebraska |
| 73 | Lois L. Hartley | 15 | Daughter | — | Nebraska |
| 74 | Roy A. Herzog | 31 | Head | Farmer | Nebraska |
| 75 | Alta E. Herzog | 34 | Wife | — | Nebraska |
| 76 | Richard Roy Herzog | 1 | Son | — | Nebraska |
| 77 | Stella L. Gretina | 44 | Head | — | Nebraska |
| 78 | Martin Johnson | 75 | Head | — | Denmark |
| 79 | Alma H. Johnson | 62 | Wife | — | Iowa |
| 80 | Martin J. Johnson THIS PERSON | 39 | Son | Farmer | Nebraska |
Pedigree Summary
Martin
Gen 1 · 3 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)