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William Larson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Coos-County, Oregon
Our Model Tree links this William Larson across the 1930 and 1940 US Censuses in Coos-County, Oregon (XGBoost, ~Confirmed) — first a son (b.~1922), then head of a 6-person household.
Age 18
b. ~1922
Male
Son
Born: Oregon
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Coos-County, Oregon |
| Surname | Larson |
| Given Name | William H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Oregon |
| 1935 Residence (City) | Marshfield City |
| 1935 Residence (County) | Coos |
| Additional Details | |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Oregon |
| Birth Country | United States |
| Birthplace (normalized) | oregon |
| Township / Ward | Marshfield City |
| Est. Birth Year | ~1922 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| George Larson | Head | — | 55 | ~1885 |
| William Larson | Son | — | 18 | ~1922 |
| Gary Larson | Son | — | 22 | ~1918 |
| John Larson | Son | — | 15 | ~1925 |
| Myrtle Larson | Spouse | — | 49 | ~1891 |
| Richard Larson | Son | — | 20 | ~1920 |
Census Appearances
1930
Coos, Oregon
Son, age 7
Coos, Oregon · implied b. ~1923 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Larsson |
| Given Name | William H |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Oregon |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Oregon |
| Birth State | Oregon |
| Birth Country | United States |
| Birthplace (normalized) | oregon |
1940
Coos-County, Oregon
Son, age 18
Coos-County, Oregon · implied b. ~1922 — 6 household members
| Surname | Larson |
| Given Name | William H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Oregon |
| 1935 Residence (City) | Marshfield City |
| 1935 Residence (County) | Coos |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| 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 William Larson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Larson
Son · 1940 · age 18 · b. ~1922 · Oregon
★ You are viewing this record
Sibling
John Larson
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Larson
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gary Larson
Sibling · 1940 · age 22
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 — Coos-County, Oregon
Open full size
1940 US Federal Census — Coos-County, Oregon
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03358-00203)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Jesse H. Baxter | 52 | Head | Office Manager | Oregon |
| 2 | Bessie E. Baxter | 48 | Wife | — | Nebraska |
| 3 | Robert Baxter | 22 | Son | — | Oregon |
| 4 | Charles L. Harrington | 49 | Head | Sawyer | Oregon |
| 5 | Alpha Harrington | 49 | Wife | — | Oregon |
| 6 | Mary Jean Harrington | 8 | Daughter | — | Oregon |
| 7 | Jeff Dunn | 54 | Head | Clothing Store | Oregon |
| 8 | Betty Dunn | 29 | Daughter | — | Oregon |
| 9 | Ida Lombard | 59 | Lodger | Housekeeper | Iowa |
| 10 | Ted Harry | 44 | Head | Bus Driver | Oregon |
| 11 | Minnie Harry | 37 | Wife | — | Netherlands |
| 12 | Jo Ann Harry | 12 | Daughter | — | Oregon |
| 13 | Keith Harry | 13 | Son | — | Oregon |
| 14 | Wesley A. Seaman | 42 | Head | Attorney | Oregon |
| 15 | Alice H. Seaman | 44 | Wife | — | Minnesota |
| 16 | Philip Seaman | 16 | Son | — | California |
| 17 | Maureen Seaman | 15 | Daughter | — | Oregon |
| 18 | Harold Briggs | 49 | Head | Truck Driver | Illinois |
| 19 | Ruby Briggs | 48 | Wife | Flat Worker | Idaho |
| 20 | Dennis Mccarthy | 60 | Head | Fisherman | Canada |
| 21 | Theresa Mccarthy | 50 | Wife | — | Oregon |
| 22 | Phyllis Mccarthy | 25 | Daughter | Secretary | Oregon |
| 23 | Stan Mccarthy | 16 | Son | — | Oregon |
| 24 | Ann Mccarthy | 13 | Daughter | — | Oregon |
| 25 | Milton Brazel | 30 | Head | Truck Driver | Washington |
| 26 | Helen Brazel | 21 | Wife | — | England |
| 27 | Milton Jr. Brazel | 2 | Son | — | Oregon |
| 28 | Robert Brazel | 1 | Son | — | Oregon |
| 29 | Amos N. Briggs | 73 | Head | News Writer | Illinois |
| 30 | Jennie Briggs | 72 | Wife | — | Illinois |
| 31 | Enid Briggs | 35 | Daughter | Clerking | Oregon |
| 32 | George A. Larson | 55 | Head | Salesman | Sweden |
| 33 | Myrtle E. Larson | 49 | Wife | — | Oregon |
| 34 | Gary A. Larson | 22 | Son | Commercial Artist | Oregon |
| 35 | Richard A. Larson | 20 | Son | — | Oregon |
| 36 | William H. Larson THIS PERSON | 18 | Son | — | Oregon |
| 37 | John A. Larson | 15 | Son | — | Oregon |
| 38 | Charles Cannon | 45 | Head | Switch Board Man | Kentucky |
| 39 | Vesta Cannon | 34 | Wife | — | Kansas |
| 40 | Barbara Jane Cannon | 12 | Daughter | — | 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)