MJ
Martin Johnson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Clackamas-County, Oregon
Our Model Tree links this Martin Johnson across the 1910, 1920, 1930 and 1940 US Censuses in Clackamas-County, Oregon (XGBoost, ~Confirmed) — first a head (b.~1881), then head of a 4-person household.
Age 59
b. ~1881
Male
Head
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Clackamas-County, Oregon |
| Surname | Johnson |
| Given Name | Martin H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 59 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Macksburg Precinct |
| 1935 Residence (County) | Clackamas |
| Additional Details | |
| Occupation | Farmer |
| Industry | General farm |
| Class of Worker | OA |
| Hours Worked | 48 |
| Income (1939) | 20 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Farmer |
| Township / Ward | Macksburg Precinct |
| Est. Birth Year | ~1881 |
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 |
|---|---|---|---|---|
| Ada Holmes | Daughter | — | 21 | ~1919 |
| Martin Johnson | Head | — | 59 | ~1881 |
| Edwin Holmes | Other | — | 3 | ~1937 |
| Henry Johnson | Son | — | 35 | ~1905 |
Census Appearances
1910
Clackamas, Oregon
Head, age 29
Clackamas, Oregon · implied b. ~1881 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Martin H |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Iowa |
| Years Married | 6 |
| Father's Birthplace | Nor Norwegian |
| Mother's Birthplace | Nor Norwegian |
| Occupation | Farmer |
| Industry | General Farm |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1920
Clackamas, Oregon
Head, age 39
Clackamas, Oregon · implied b. ~1881 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Martin H |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Iowa |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Occupation | Farmer |
| Industry | General farm |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Norwegian |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Clackamas, Oregon
Head, age 49
Clackamas, Oregon · implied b. ~1881 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Martin H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 49 |
| Marital Status | Widowed |
| Birthplace | Iowa |
| Age at First Marriage | 22 |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Clackamas-County, Oregon
Head, age 59
Clackamas-County, Oregon · implied b. ~1881 — 4 household members
| Surname | Johnson |
| Given Name | Martin H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 59 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Macksburg Precinct |
| 1935 Residence (County) | Clackamas |
| Occupation | Farmer |
| Industry | General farm |
| Class of Worker | OA |
| Hours Worked | 48 |
| Income (1939) | 20 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Martin Johnson
Head · 1940 · age 59 · b. ~1881 · Oregon
★ 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 — Clackamas-County, Oregon
Open full size
1940 US Federal Census — Clackamas-County, Oregon
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03354-00839)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | John G. Wolf | 69 | Father | — | Illinois |
| 42 | Kate Hocken | 65 | Aunt | — | Nebraska |
| 43 | Frank E. Sipe | 45 | Head | Farmer | Pennsylvania |
| 44 | Clyde R. Meglemre | 29 | Hired man | Laborer | Nebraska |
| 45 | Clifford C. Hogan | 47 | Head | — | Oregon |
| 46 | Fred C. Peter | 24 | Head | Farmer | Oregon |
| 47 | Esther C. Peter | 24 | Wife | — | Oregon |
| 48 | Larry R. Peter | 0 | Son | — | Oregon |
| 49 | Sylvester S. Gibson | 43 | Head | Farmer | Oregon |
| 50 | Anna B. Gibson | 41 | Wife | — | Wisconsin |
| 51 | Evelyn Gibson | 20 | Daughter | — | Oregon |
| 52 | James D. Gibson | 12 | Son | — | Oregon |
| 53 | Barbara M. Gibson | 9 | Daughter | — | Oregon |
| 54 | Martin H. Johnson THIS PERSON | 59 | Head | Farmer | Iowa |
| 55 | Henry O. Johnson | 35 | Son | Farmer | Iowa |
| 56 | Ada E. Holmes | 21 | Daughter | Housekeeper | Oregon |
| 57 | Edwin H. Holmes | 3 | Grandson | — | Iowa |
| 58 | John F. Nordhausen | 57 | Head | Farmer | Nebraska |
| 59 | Alice Nordhausen | 22 | Daughter | Stenographer | Oregon |
| 60 | Fred O. Leffler | 34 | Son-in-law | Laborer | Oregon |
| 61 | Lillian R. Leffler | 30 | Daughter | — | Oregon |
| 62 | Glyn E. Leffler | 8 | Grandson | — | Oregon |
| 63 | Velma Ann Leffler | 5 | Granddaughter | — | Oregon |
| 64 | Oscar Bolland | 45 | Head | Farmer / Carpenter | Iowa |
| 65 | Erica H. Bolland | 44 | Wife | — | Oregon |
| 66 | Evelyn A. Bolland | 20 | Daughter | — | Oregon |
| 67 | Raymond L. Bolland | 19 | Son | Laborer | Oregon |
| 68 | Maxine M. Bolland | 16 | Daughter | — | Oregon |
| 69 | Esther E. Bolland | 8 | Daughter | — | Oregon |
| 70 | Marvin O. Bolland | 6 | Son | — | Oregon |
| 71 | Andrew Bolland | 62 | Head | — | Iowa |
| 72 | Johanna Bolland | 58 | Wife | — | Norway |
| 73 | Nels Dotseth | 45 | Nephew | Farmer | Norway |
| 74 | Wilhelm M. Hebert | 74 | Head | — | Germany |
| 75 | Emma Hebert | 66 | Wife | — | Illinois |
| 76 | George Reis | 58 | Head | — | Rumania |
| 77 | Barbara Reis | 56 | Wife | — | Rumania |
| 78 | Arden E. Harms | 36 | Head | Proprietor | Oregon |
| 79 | Nellie B. Harms | 33 | Wife | Attendant | Montana |
| 80 | Roger Harms | 9 | Son | — | Oregon |
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)