RL
Robert Larson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Multnomah-County, Oregon
Our Model Tree links this Robert Larson across the 1930 and 1940 US Censuses in Multnomah-County, Oregon (XGBoost, ~Confirmed) — first a son (b.~1928), then head of a 10-person household.
Age 12
b. ~1928
Male
Son
Born: Oregon
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Multnomah-County, Oregon |
| Surname | Larson |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Oregon |
| 1935 Residence (City) | Portland city |
| 1935 Residence (County) | Multnomah |
| Additional Details | |
| Highest Grade | No 6 |
| 1935 Residence | Same House |
| Birth State | Oregon |
| Birth Country | United States |
| Birthplace (normalized) | oregon |
| Township / Ward | Portland City |
| Est. Birth Year | ~1928 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Bertha Larson | Spouse | — | 48 | ~1892 |
| Jean Larson | Daughter | — | 14 | ~1926 |
| William Larson | Son | — | 2 | ~1938 |
| Irma Larson | Daughter | — | 21 | ~1919 |
| Ernest Larson | Head | — | 50 | ~1890 |
| Kenneth Larson | Son | — | 29 | ~1911 |
| Robert Larson | Son | — | 12 | ~1928 |
| Dorothy Larson | Daughter | — | 9 | ~1931 |
| Shirley Larson | Daughter | — | 7 | ~1933 |
| Ruth Larson | Daughter | — | 16 | ~1924 |
Census Appearances
1930
Multnomah, Oregon
Son, age 2
Multnomah, Oregon · implied b. ~1928 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Larson |
| Given Name | Robert H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Oregon |
| Father's Birthplace | Minnesota |
| Mother's Birthplace | Oregon |
| Can Read/Write | Yes |
| Birth State | Oregon |
| Birth Country | United States |
| Birthplace (normalized) | oregon |
1940
Multnomah-County, Oregon
Son, age 12
Multnomah-County, Oregon · implied b. ~1928 — 10 household members
| Surname | Larson |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Oregon |
| 1935 Residence (City) | Portland city |
| 1935 Residence (County) | Multnomah |
| Highest Grade | No 6 |
| 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 Robert Larson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Larson
Son · 1940 · age 12 · b. ~1928 · Oregon
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Sibling
Irma Larson
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Larson
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Larson
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Larson
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kenneth Larson
Sibling · 1940 · age 29
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jean Larson
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Shirley Larson
Sibling · 1940 · age 7
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 — 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-t0627-03388-00783)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | James F Parker | 14 | Lodger | — | Oregon |
| 2 | A. M. Westcott | 27 | Head | Asst. Stat. Clerk | Colorado |
| 3 | Florence M Westcott | 36 | Wife | — | South Dakota |
| 4 | Myrtle Aumundson | 17 | Daughter | New Worker | North Dakota |
| 5 | Thelma Aumundson | 14 | Daughter | — | Oregon |
| 6 | Joseph Fessler | 41 | Head | Steam-Fitter | Oregon |
| 7 | Mildred E Fessler | 35 | Wife | — | Pennsylvania |
| 8 | John L Sutton | 34 | Head | Sheet Metal Worker | Pennsylvania |
| 9 | Wilhelmina S Sutton | 37 | Wife | — | Idaho |
| 10 | Dorothy Sutton | 13 | Daughter | — | Washington |
| 11 | Ronald Sutton | 8 | Son | — | Oregon |
| 13 | Ernest Larson | 50 | Head | Labor Foreman | Sweden |
| 14 | Bertha O Larson | 48 | Wife | — | Oregon |
| 15 | Irma Larson | 21 | Daughter | New Worker | Oregon |
| 16 | Kenneth Larson | 29 | Son | Truck Driver | Oregon |
| 17 | Ruth Larson | 16 | Daughter | — | Oregon |
| 18 | Jean Larson | 14 | Daughter | — | Oregon |
| 19 | Robert Larson THIS PERSON | 12 | Son | — | Oregon |
| 20 | Dorothy Larson | 9 | Daughter | — | Oregon |
| 21 | Shirley Larson | 7 | Daughter | — | Oregon |
| 22 | William Larson | 2 | Son | — | Oregon |
| 23 | Otto H Johnson | 61 | Head | Carpenter Brick-Layer | Sweden |
| 24 | Margaret A Johnson | 59 | Wife | — | Indiana |
| 25 | Robert Johnson | 18 | Son | Apprentice Carpenter | Oregon |
| 26 | Ira A Gardner | 60 | Head | Laborer | Indiana |
| 27 | Floyd H Gardner | 23 | Son | Welder | Indiana |
| 28 | Lulu Livingston | 49 | House-keeper | Housework | Indiana |
| 29 | Alva W Bennett | 55 | Head | — | Iowa |
| 30 | Mary S Bennett | 71 | Mother | — | Iowa |
| 31 | Jacob J Kegler | 43 | Head | Furniture Upholsterer | Russia |
| 32 | Hess B Kegler | 39 | Wife | — | Missouri |
| 33 | Warren Kegler | 18 | Son | Iron-Worker Helper | Oregon |
| 34 | Kenneth Kegler | 17 | Son | — | Oregon |
| 35 | Joyce Kegler | 6 | Daughter | — | Oregon |
| 36 | Harold Kimball | 35 | Head | Superintendent Supervisor | Massachusetts |
| 37 | Vera S Kimball | 34 | Wife | Supervisor | Washington |
| 38 | Jacqueline Kimball | 7 | Daughter | — | Washington |
| 39 | Gary Kimball | 5 | Son | — | Oregon |
| 40 | Edward N Parish | 67 | Head | Proprietor | California |
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)