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Ada Johnson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Multnomah-County, Oregon
Our Model Tree links this Ada Johnson across the 1920, 1930 and 1940 US Censuses in Multnomah-County, Oregon (XGBoost, ~Confirmed) — first a spouse (b.~1884), then head of a 4-person household.
Age 56
b. ~1884
Female
Spouse
Born: Oregon
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Multnomah-County, Oregon |
| Surname | Johnson |
| Given Name | Ada S. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 56 |
| Marital Status | Married |
| Birthplace | Oregon |
| 1935 Residence (City) | Portland city |
| 1935 Residence (County) | Multnomah |
| Additional Details | |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Highest Grade | H-4 |
| 1935 Residence | Same house |
| Birth State | Oregon |
| Birth Country | United States |
| Birthplace (normalized) | oregon |
| Township / Ward | Portland City |
| Est. Birth Year | ~1884 |
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 Ada | Age | Birth yr |
|---|---|---|---|---|
| Adela Johnson | Daughter | — | 20 | ~1920 |
| Albert Johnson | Head | — | 54 | ~1886 |
| Stanley Johnson | Son | — | 23 | ~1917 |
| Ada Johnson | Spouse | — | 56 | ~1884 |
Census Appearances
1920
Multnomah, Oregon
Spouse, age 36
Multnomah, Oregon · implied b. ~1884 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Ada S |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Oregon |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Indiana |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Oregon |
| Birth Country | United States |
| Birthplace (normalized) | oregon |
1930
Multnomah, Oregon
Spouse, age 46
Multnomah, Oregon · implied b. ~1884 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Ada S |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Oregon |
| Age at First Marriage | 25 |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Indiana |
| Can Read/Write | Yes |
| Birth State | Oregon |
| Birth Country | United States |
| Birthplace (normalized) | oregon |
1940
Multnomah-County, Oregon
Spouse, age 56
Multnomah-County, Oregon · implied b. ~1884 — 4 household members
| Surname | Johnson |
| Given Name | Ada S. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 56 |
| Marital Status | Married |
| Birthplace | Oregon |
| 1935 Residence (City) | Portland city |
| 1935 Residence (County) | Multnomah |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Highest Grade | H-4 |
| 1935 Residence | Same house |
| Birth State | Oregon |
| Birth Country | United States |
| Birthplace (normalized) | oregon |
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 Ada Johnson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Ada Johnson
Spouse · 1940 · age 56 · b. ~1884 · Oregon
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Multnomah-County, Oregon
Open full size
1940 US Federal Census — Multnomah-County, Oregon
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-03389-00446)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Edna Mac Donald | 49 | Head | Main Matron Clerk | Iowa |
| 42 | Cathryn Mac Donald | 16 | Daughter | — | Oregon |
| 43 | W. H. Hofacker | 88 | Head | — | Indiana |
| 44 | Anna Tremayne | 67 | Head | Housekeeper | Nebraska |
| 45 | Roy Schmied | 27 | Lodger | Packer | California |
| 46 | F. M. Stemberger | 42 | Lodger | Salesman | Kansas |
| 48 | Albert G. Johnson | 54 | Head | Manager Office | Massachusetts |
| 49 | Ada S. Johnson THIS PERSON | 56 | Wife | — | Oregon |
| 50 | Stanley R. Johnson | 23 | Son | Traffic Clerk | Oregon |
| 51 | Adela R. Johnson | 20 | Daughter | — | Oregon |
| 52 | Alfred E. Amos | 77 | Head | — | Germany |
| 53 | Anna Amos | 75 | Wife | — | Austria |
| 54 | James W. Duff | 63 | Head | Nurseryman | Oregon |
| 55 | Nelly Duff | 64 | Wife | — | Oregon |
| 56 | Steve Muskus | 44 | Head | Loading Lumber | Austria |
| 57 | Eva Perry | 50 | Keeper | Housekeeper | California |
| 58 | Joseph C. Downing | 66 | Head | Electrical Engineer | New York |
| 59 | Mabelle L. Downing | 62 | Wife | — | New York |
| 60 | Mabelle J. Downing | 29 | Daughter | Stenographer | Oregon |
| 61 | Nelson C. Longworth | 33 | Son-in-law | Shipping Clerk | Oregon |
| 62 | Evelyn C. Longworth | 32 | Daughter | Stenographer | Oregon |
| 63 | James Mcnamara | 53 | Head | W.P.A. Laborer | England |
| 64 | Adelaide Mcnamara | 47 | Wife | — | New York |
| 65 | Donald Mcnamara | 15 | Son | — | Oregon |
| 66 | George M. Farrington | 32 | Head | Sales Supervisor | Kansas |
| 67 | Agnes Farrington | 33 | Wife | — | South Dakota |
| 68 | Mildred E. Farrington | 10 | Son | — | Michigan |
| 69 | Dennis Farrington | 6 | Son | — | Kansas |
| 70 | Colleen Farrington | 1 | Daughter | 0 | Oregon |
| 71 | Kathleen Farrington | 0 | Daughter | 0 | Oregon |
| 72 | Marcus Crowley | 23 | Head | Assessor | Oregon |
| 73 | Fay Crowley | 23 | Wife | — | Oregon |
| 74 | Mirtie Frost | 51 | Head | — | Missouri |
| 75 | Archie L. Foster | 69 | Head | Watchman | New York |
| 76 | Elizabeth Foster | 67 | Wife | — | Ohio |
| 77 | Elizabeth Brown | 91 | Mother-in-law | — | Pennsylvania |
| 78 | Alice E. Mcnulty | 66 | Head | — | Oregon |
| 79 | Thomas L. Mcnulty | 40 | Son | — | Oregon |
| 80 | Lillian M. Mcnulty | 29 | Daughter-in-law | Stenographer | Illinois |
Related Census Records
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)