MJ
Martin Johnson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Pierce-County, Washington
Our Model Tree links this Martin Johnson across the 1920, 1930 and 1940 US Censuses in Pierce-County, Washington (XGBoost, ~Confirmed), with identified parents Martin & Ole — first a son (b.~1918), then head of a 4-person household.
Age 22
b. ~1918
Male
Son
Born: Washington
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Pierce-County, Washington |
| Surname | Johnson |
| Given Name | Martin L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Washington |
| 1935 Residence (City) | Tacoma City |
| 1935 Residence (County) | Pierce |
| Additional Details | |
| Occupation | apprentice |
| Industry | machine shop |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 360 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
| Occupation | Apprentice |
| Township / Ward | Tacoma City |
| 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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Martin | Age | Birth yr |
|---|---|---|---|---|
| Ole Johnson | Head | — | 65 | ~1875 |
| Martin Johnson | Son | — | 22 | ~1918 |
| Kenneth Johnson | Son | — | 19 | ~1921 |
| Marie Johnson | Spouse | — | 59 | ~1881 |
Census Appearances
1920
Pierce, Washington
Son, age 1
Pierce, Washington · implied b. ~1919 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Marvin |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Norway |
| Mother's Birthplace | Minnesota |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
Son, age 11
Pierce, Washington · implied b. ~1919 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Marvin L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | Norway |
| Mother's Birthplace | Minnesota |
| Occupation | Newsboy |
| Industry | Newspaper |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1940
Pierce-County, Washington
Son, age 22
Pierce-County, Washington · implied b. ~1918 — 4 household members
| Surname | Johnson |
| Given Name | Martin L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Washington |
| 1935 Residence (City) | Tacoma City |
| 1935 Residence (County) | Pierce |
| Occupation | apprentice |
| Industry | machine shop |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 360 |
| 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 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 father Ole Johnson (~0.92 confidence) and mother Marie Johnson (~0.92 confidence) and mother Ida Johnson (~0.92 confidence) and father Martin Johnson (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Martin Johnson
b. ~1871
Source father
● Household
· direct · ~0.92
Father
Ole Johnson
b. ~1875
Source father
● Household
· direct · ~0.92
Mother
Marie Johnson
b. ~1881
Source mother
● Household
· direct · ~0.92
Mother
Ida Johnson
b. ~1885
Source mother
● Household
· direct · ~0.92
Father
Martin Johnson
b. ~1898
Source father
● Household
· direct · ~0.92
This person
Anchor record
Martin Johnson
Son · 1940 · age 22 · b. ~1918 · Washington
★ You are viewing this record
Sibling
Kenneth Johnson
Sibling · 1940 · age 19
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 — Pierce-County, Washington
Open full size
1940 US Federal Census — Pierce-County, Washington
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04390-00073)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | John Broom | 76 | Inmate | — | Washington |
| 42 | Mae Mclane | 70 | Inmate | — | Washington |
| 43 | Mary Ward | 71 | Inmate | — | Washington |
| 44 | Olga Hamburg | 32 | Inmate | — | Washington |
| 45 | Louise Niquette | 52 | Inmate | — | Washington |
| 46 | Thelma Gustafson | 50 | Head | — | Sweden |
| 47 | Alice C. Seaman | 80 | Lodger | — | Minnesota |
| 48 | William M. Hegielewski | 35 | Head | Subforeman | Delaware |
| 49 | Hazel L. Hegielewski | 39 | Wife | — | Oregon |
| 50 | Richard R. Nelson | 17 | Step-son | — | Washington |
| 51 | Whitney A. Hegielewski | 9 | Son | — | Washington |
| 52 | Michael W. Hegielewski | 5 | Son | — | Washington |
| 53 | Judith A. Hegielewski | 5 | Daughter | — | Washington |
| 54 | Bertha N. Swanberg | 46 | Head | — | Norway |
| 55 | Hazel C. Swanberg | 20 | Daughter | — | Washington |
| 56 | John H. Swanberg | 17 | Son | — | Washington |
| 57 | Bernice S. Swanberg | 16 | Daughter | Helper In School Gym | Washington |
| 58 | Frances M. Swanberg | 13 | Daughter | — | Washington |
| 59 | Leroy D. Swanberg | 11 | Son | — | Washington |
| 60 | John E. Backman | 50 | Lodger | Floor Layer | Finland |
| 61 | Erling Berg | 42 | Lodger | Carpenter | Norway |
| 62 | Gunnar H. Olsen | 38 | Head | Salesman | Norway |
| 63 | Leona N. Olsen | 38 | Wife | Saleswoman | Minnesota |
| 64 | Richard H. Olsen | 12 | Son | — | Washington |
| 65 | Rosa B. Peterson | 52 | Head | Private Duty Nurse | North Dakota |
| 66 | Ole Johnson | 65 | Head | Carpenter | Norway |
| 67 | Marie Johnson | 59 | Wife | — | Norway |
| 68 | Martin L. Johnson THIS PERSON | 22 | Son | Apprentice | Washington |
| 69 | Kenneth B. Johnson | 19 | Son | New Worker | Washington |
| 70 | Ole H. Kooley | 47 | Head | Ore Skimmer | Norway |
| 71 | Marie K. Kooley | 45 | Wife | — | Norway |
| 72 | Arnold P. Kooley | 19 | Son | New Worker | Washington |
| 73 | Peter O. Solberg | 75 | Head | — | Norway |
| 74 | Jensene P. Solberg | 69 | Wife | — | Norway |
| 75 | Elis M. Colbo | 62 | Head | — | Norway |
| 76 | Inga Colbo | 63 | Wife | — | Norway |
| 77 | Peter Golden | 36 | Head | General Helper | Norway |
| 78 | Anna Golden | 35 | Wife | — | Norway |
| 79 | Palmer G. Golden | 11 | Son | — | Washington |
| 80 | Betty Jean Golden | 9 | Daughter | — | Washington |
Related Census Records
Pedigree Summary
Martin + 1 sibling
Gen 1 · 5 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)