JL
John Larson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Sullivan-County, Indiana
Our Model Tree links this John Larson across the 1920, 1930 and 1940 US Censuses in Sullivan-County, Indiana (XGBoost, ~Confirmed), with identified parents Charlie & Charles — first a son (b.~1918), then head of a 5-person household.
Age 22
b. ~1918
Male
Son
Born: Indiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Sullivan-County, Indiana |
| Surname | Larson |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Cass Township |
| 1935 Residence (County) | Sullivan |
| Additional Details | |
| Occupation | Bus Driver |
| Industry | School Bus |
| Class of Worker | PW |
| Hours Worked | 35 |
| Income (1939) | 450 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Occupation | Bus Driver |
| Township / Ward | Cass Township |
| Est. Birth Year | ~1918 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Cristine Larson | Head | — | 59 | ~1881 |
| Ruth Larson | Other | — | 13 | ~1927 |
| Wendell Larson | Other | — | 5 | ~1935 |
| Lowell Larson | Son | — | 32 | ~1908 |
| John Larson | Son | — | 22 | ~1918 |
Census Appearances
Son, age 1
Sullivan, Indiana · implied b. ~1919 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Larsen |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Mother Tongue | Swedish |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Sullivan, Indiana
Son, age 12
Sullivan, Indiana · implied b. ~1918 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Larson |
| Given Name | John E W |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Sullivan-County, Indiana
Son, age 22
Sullivan-County, Indiana · implied b. ~1918 — 5 household members
| Surname | Larson |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Cass Township |
| 1935 Residence (County) | Sullivan |
| Occupation | Bus Driver |
| Industry | School Bus |
| Class of Worker | PW |
| Hours Worked | 35 |
| Income (1939) | 450 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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 John Larson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Charlie Larson (~0.92 confidence) and father Charles Larsen (~0.92 confidence) and mother Cristine Larson (~0.92 confidence) and mother Katrina Larsen (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Charlie Larson
b. ~1878
Source father
● Household
· direct · ~0.92
Father
Charles Larsen
b. ~1879
Source father
● Household
· direct · ~0.92
Mother
Cristine Larson
b. ~1881
Source mother
● Household
· direct · ~0.92
Mother
Katrina Larsen
b. ~1882
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Larson
Son · 1940 · age 22 · b. ~1918 · Indiana
★ You are viewing this record
Sibling
Lowell Larson
Sibling · 1940 · age 32
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 — Sullivan-County, Indiana
Open full size
1940 US Federal Census — Sullivan-County, Indiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01097-00109)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Pansy @ Rookeberry | 24 | Wife | — | Indiana |
| 42 | Mary Lou Rookeberry | 4 | Daughter | — | Indiana |
| 43 | Robert Rookeberry | 2 | Son | — | Indiana |
| 44 | Donnie Rookeberry | 0 | Son | — | Indiana |
| 45 | Cristine @ Larson | 59 | Head | — | Sweden |
| 46 | Lowell Larson | 32 | Son | Bus Driver | Indiana |
| 47 | John Larson THIS PERSON | 22 | Son | Bus Driver | Indiana |
| 48 | Ruth Larson | 13 | Grand daughter | — | Indiana |
| 49 | Wendell C. Larson | 5 | Grand son | — | Indiana |
| 50 | George @ Alumbaugh | 72 | Head | — | Indiana |
| 51 | Rebecca A. Alumbaugh | 70 | Wife | — | Indiana |
| 52 | Doak @ Pigg | 54 | Head | Laborer | Indiana |
| 53 | Stella Pigg | 46 | Wife | — | Indiana |
| 54 | Pansy Pigg | 27 | Daughter | — | Indiana |
| 55 | Marie @ Goodman | 35 | Head | — | Indiana |
| 56 | Betty R. Goodman | 14 | Daughter | — | Indiana |
| 57 | Ruth M. Goodman | 13 | Daughter | — | Indiana |
| 58 | Jacki Goodman | 10 | Son | — | Indiana |
| 59 | Joan Goodman | 9 | Daughter | — | Indiana |
| 60 | Herbert Goodman | 5 | Son | — | Indiana |
| 61 | Clarence @ Alumbaugh | 38 | Head | Coal Miner | Indiana |
| 62 | Goldie Alumbaugh | 41 | Wife | — | Indiana |
| 63 | Dayle W. Alumbaugh | 11 | Son | — | Indiana |
| 64 | James Oliver | 51 | Head | Coal Miner | Indiana |
| 65 | Ethel Oliver | 51 | Wife | — | Indiana |
| 66 | William Oliver | 35 | Son | Coal Miner | Indiana |
| 67 | Mary @ Oliver | 28 | Daughter in law | — | Indiana |
| 68 | Thomas Oliver | 11 | Grand son | — | Indiana |
| 69 | Patricia Oliver | 7 | Grand daughter | — | Indiana |
| 70 | John Oliver | 5 | Grand son | — | Indiana |
| 71 | Rosemary Oliver | 3 | Grand daughter | — | Indiana |
| 72 | Phyllis A. Oliver | 1 | Grand daughter | — | Indiana |
| 73 | William Marlowe | 46 | Head | Laborer | Indiana |
| 74 | Ruby @ Marlowe | 37 | Wife | — | Indiana |
| 75 | Marjorie Marlowe | 13 | Daughter | — | Indiana |
| 76 | Robert Marlowe | 16 | Son | — | Indiana |
| 77 | Ervin @ Mayfield | 43 | Head | Farmer | Indiana |
| 78 | Jessie Mayfield | 38 | Wife | — | Indiana |
| 79 | Clyde Hutchins | 51 | Head | Trucker | Indiana |
| 80 | Beulah C. @ Hutchins | 48 | Wife | — | Indiana |
Related Census Records
Pedigree Summary
John + 1 sibling
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)