MJ
Melvin Johnson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Henry-County, Illinois
Our Model Tree links this Melvin Johnson across the 1910, 1920, 1930 and 1940 US Censuses in Henry-County, Illinois (XGBoost, ~Confirmed), with identified parents Marie & Charles — first a son (b.~1908), then head of a 4-person household.
Age 32
b. ~1908
Male
Son
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Henry-County, Illinois |
| Surname | Johnson |
| Given Name | Melvin |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Geneseo Township |
| 1935 Residence (County) | Henry |
| Additional Details | |
| Occupation | Partner |
| Industry | Farm |
| Class of Worker | E |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | H 4 |
| 1935 Residence | Same Place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Partner |
| Township / Ward | Geneseo Township |
| Est. Birth Year | ~1908 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Melvin | Age | Birth yr |
|---|---|---|---|---|
| Amos Johnson | Head | — | 56 | ~1884 |
| Marion Johnson | Other | — | 29 | ~1911 |
| Melvin Johnson | Son | — | 32 | ~1908 |
| Mary Johnson | Spouse | — | 53 | ~1887 |
Census Appearances
1910
Rock Island, …
Son, age 1
Rock Island, Illinois · implied b. ~1909 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Melvin |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1920
Rock Island, …
Son, age 11
Rock Island, Illinois · implied b. ~1909 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Melvin M. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Chauffeur |
| Industry | Candy Co. |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Swedish |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Rock Island, …
Son, age 21
Rock Island, Illinois · implied b. ~1909 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Melvin J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Can Read/Write | Yes |
| Mother Tongue | Swedish |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Henry-County, Illinois
Son, age 32
Henry-County, Illinois · implied b. ~1908 — 4 household members
| Surname | Johnson |
| Given Name | Melvin |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Geneseo Township |
| 1935 Residence (County) | Henry |
| Occupation | Partner |
| Industry | Farm |
| Class of Worker | E |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | H 4 |
| 1935 Residence | Same Place |
| 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 Melvin Johnson across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Marie Johnson (~0.92 confidence) and father Charles Johnson (~0.92 confidence) and mother Edith Johnson (~0.92 confidence) and father Alfred Johnson (~0.92 confidence) and father Amos Johnson (~0.92 confidence) and father Alfred Johnson (~0.92 confidence) and mother Mary Johnson (~0.92 confidence). The pedigree spans 1 generation with 7 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Marie Johnson
b. ~1871
Source mother
● Household
· direct · ~0.92
Father
Charles Johnson
b. ~1873
Source father
● Household
· direct · ~0.92
Mother
Edith Johnson
b. ~1878
Source mother
● Household
· direct · ~0.92
Father
Alfred Johnson
b. ~1884
Source father
● Household
· direct · ~0.92
Father
Amos Johnson
b. ~1884
Source father
● Household
· direct · ~0.92
Father
Alfred Johnson
b. ~1885
Source father
● Household
· direct · ~0.92
Mother
Mary Johnson
b. ~1887
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Melvin Johnson
Son · 1940 · age 32 · b. ~1908 · Illinois
★ 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 — Henry-County, Illinois
Open full size
1940 US Federal Census — Henry-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00811-00800)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Anna Magruder | 20 | Wife | — | Pennsylvania |
| 42 | Ruth Magruder | 0 | Daughter | — | Illinois |
| 43 | Amos Johnson | 56 | Head | Farmer | Illinois |
| 44 | Mary Johnson | 53 | Wife | — | Illinois |
| 45 | Melvin Johnson THIS PERSON | 32 | Son | Partner | Illinois |
| 46 | Marion Johnson | 29 | Daughter-in-law | — | Illinois |
| 47 | Willard P. Anderson | 27 | Head | Farmer | Illinois |
| 48 | Lois Anderson | 33 | Wife | — | Illinois |
| 49 | Willard Jr. Anderson | 7 | Son | — | Illinois |
| 50 | Mary Alice Anderson | 5 | Daughter | — | Illinois |
| 51 | Lawrence Kleinan | 20 | Hired Hand | Labor | Illinois |
| 52 | Arvid Johnson | 53 | Head | Farmer | Illinois |
| 53 | Edith Johnson | 50 | Wife | — | Pennsylvania |
| 54 | Cyril Johnson | 20 | Son | Labor | Illinois |
| 55 | Anita Johnson | 15 | Daughter | — | Illinois |
| 56 | Fred L. Johnson | 51 | Head | Farmer | Illinois |
| 57 | Alice Johnson | 46 | Wife | — | Illinois |
| 58 | Donald Johnson | 24 | Son | Truck Driver | Illinois |
| 59 | Lester Johnson | 22 | Son | Labor | Illinois |
| 60 | Lyle Johnson | 18 | Son | Truck Driver | Illinois |
| 61 | Wilson Johnson | 11 | Son | — | Illinois |
| 62 | Bobby L. Johnson | 8 | Son | — | Illinois |
| 63 | Donna Jean Molle | 10 | Lodger | — | Illinois |
| 64 | Grant Wolf | 39 | Head | Farmer | Illinois |
| 65 | Ruth A. Wolf | 37 | Wife | — | Illinois |
| 66 | Billy Wolf | 15 | Son | — | Illinois |
| 67 | Venita Wolf | 2 | Daughter | — | Illinois |
| 68 | Will Douglas | 72 | Father-in-law | — | Illinois |
| 69 | William Resen | 23 | Hired Hand | Labor | Illinois |
| 70 | Alva Browning | 48 | Head | Farmer | Illinois |
| 71 | Irene Browning | 40 | Wife | — | Illinois |
| 72 | Frank Neiswender | 55 | Hired Hand | Labor | Illinois |
| 73 | Clarence Walless | 62 | Head | Farmer | Michigan |
| 74 | Earl Walless | 23 | Son | Labor | Illinois |
| 75 | Roy Schefsky | 30 | Head | Farmer | Ohio |
| 76 | Effie Schefsky | 28 | Wife | — | Iowa |
| 77 | Ernest Jobang | 41 | Hired Hand | Labor | Illinois |
| 78 | Frank Carlson | 43 | Head | Partner | Illinois |
| 79 | Anna Carlson | 54 | Sister | — | Illinois |
| 80 | Charles Carlson | 56 | Brother | Partner | Illinois |
Pedigree Summary
Melvin
Gen 1 · 7 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)