MJ
Melvin Johnson — 1940 US Census Record
Model Tree available1940 United States Federal Census · King-County, Washington
Our Model Tree links this Melvin Johnson across the 1920, 1930 and 1940 US Censuses in King-County, Washington (XGBoost, ~Confirmed), with identified parents Gustave & Nora — first a son (b.~1919), then head of a 5-person household.
Age 21
b. ~1919
Male
Son
Born: Washington
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | King-County, Washington |
| Surname | Johnson |
| Given Name | Melvin |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Washington |
| 1935 Residence (City) | Seattle City |
| 1935 Residence (County) | King |
| Additional Details | |
| Occupation | Clerk |
| Industry | Grocery Store |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 936 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
| Occupation | Clerk |
| Township / Ward | Seattle City |
| Est. Birth Year | ~1919 |
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 Melvin | Age | Birth yr |
|---|---|---|---|---|
| Adolf Johnson | Head | — | 58 | ~1882 |
| Kenneth Johnson | Son | — | 9 | ~1931 |
| Melvin Johnson | Son | — | 21 | ~1919 |
| Allen Johnson | Son | — | 25 | ~1915 |
| Agnes Johnson | Spouse | — | 48 | ~1892 |
Census Appearances
1920
King, Washington
Son, age 2
King, Washington · implied b. ~1918 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Melvin |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1930
King, Washington
Son, age 11
King, Washington · implied b. ~1919 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Melvin G. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Can Read/Write | Yes |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1940
King-County, Washington
Son, age 21
King-County, Washington · implied b. ~1919 — 5 household members
| Surname | Johnson |
| Given Name | Melvin |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Washington |
| 1935 Residence (City) | Seattle City |
| 1935 Residence (County) | King |
| Occupation | Clerk |
| Industry | Grocery Store |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 936 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
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 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Gustave Johnson (~0.92 confidence) and mother Nora Johnson (~0.92 confidence) and father Adolf Johnson (~0.92 confidence) and father Adolph Johnson (~0.92 confidence) and mother Agnes Johnson (~0.92 confidence) and mother Agnes Johnson (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Gustave Johnson
b. ~1873
Source father
● Household
· direct · ~0.92
Mother
Nora Johnson
b. ~1880
Source mother
● Household
· direct · ~0.92
Father
Adolf Johnson
b. ~1882
Source father
● Household
· direct · ~0.92
Father
Adolph Johnson
b. ~1889
Source father
● Household
· direct · ~0.92
Mother
Agnes Johnson
b. ~1892
Source mother
● Household
· direct · ~0.92
Mother
Agnes Johnson
b. ~1892
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Melvin Johnson
Son · 1940 · age 21 · b. ~1919 · Washington
★ You are viewing this record
Sibling
Allen Johnson
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kenneth Johnson
Sibling · 1940 · age 9
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 — King-County, Washington
Open full size
1940 US Federal Census — King-County, Washington
Page Contents
29 people indexed on this census page (nara:1940:m-t0627-04376-00660)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Helen R Howard | 45 | Wife | — | Washington |
| 2 | Phyllis Howard | 21 | Daughter | — | Washington |
| 3 | Margaret Howard | 15 | Daughter | — | Oregon |
| 4 | Wald Howard | 13 | Son | — | Oregon |
| 5 | Lester A. Buck | 46 | Head | Passenger Agnt | Washington |
| 6 | Elizabeth R Buck | 47 | Wife | Operator | Colorado |
| 7 | Fred C. Baker | 69 | Head | Plumber | England |
| 8 | Addella S Baker | 64 | Wife | — | Missouri |
| 9 | Glen Baker | 28 | Son | Plumber | Washington |
| 10 | Thomas Adams | 64 | Head | Non-Functional | Nebraska |
| 11 | Ethel Adams | 54 | Wife | Teacher | Nebraska |
| 12 | Thomas Ward | 50 | Head | Clerk | Ireland |
| 13 | Agnes C Ward | 51 | Wife | — | Ireland |
| 14 | Agnes C Ward | 23 | Daughter | Stenographer | Washington |
| 15 | John Ward | 21 | Son | — | Washington |
| 16 | Thomas Ward | 18 | Son | — | Washington |
| 17 | Mary Ward | 15 | Daughter | — | Washington |
| 18 | Joe Ward | 13 | Son | — | Washington |
| 19 | Denny Ward | 6 | Son | — | Washington |
| 20 | Helen S Shellman | 82 | Head | — | Sweden |
| 21 | Wilbur Baker | 57 | Head | Carpenter | Kentucky |
| 22 | Lenora S Baker | 52 | Wife | — | Wisconsin |
| 23 | Raymond Porter | 27 | Son | Installer | Washington |
| 24 | Robert Porter | 24 | Son | Clerk | Washington |
| 25 | Adolf Johnson | 58 | Head | Carpenter | Sweden |
| 26 | Agnes R Johnson | 48 | Wife | — | Sweden |
| 27 | Allen Johnson | 25 | Son | Carpenter | Washington |
| 28 | Melvin Johnson THIS PERSON | 21 | Son | Clerk | Washington |
| 29 | Kenneth Johnson | 9 | Son | — | Washington |
Pedigree Summary
Melvin + 2 siblings
Gen 1 · 6 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)