OS
Oscar Swanson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Los-Angeles-County, California
Our Model Tree links this Oscar Swanson across the 1910, 1920, 1930 and 1940 US Censuses in Los-Angeles-County, California (XGBoost, ~Confirmed), with identified parents Olive & Emelia — first a head (b.~1894), then head of a 4-person household.
Age 46
b. ~1894
Male
Head
Born: Connecticut
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Los-Angeles-County, California |
| Surname | Swanson |
| Given Name | Oscar E. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Connecticut |
| 1935 Residence (City) | Pasadena |
| 1935 Residence (County) | Los Angeles |
| Additional Details | |
| Occupation | instrument maker |
| Industry | scientific institute |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 2280 |
| Highest Grade | H 3 |
| 1935 Residence | Same house |
| Birth State | Connecticut |
| Birth Country | United States |
| Birthplace (normalized) | connecticut |
| Occupation | Instrument Maker |
| Township / Ward | Pasadena |
| Est. Birth Year | ~1894 |
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 Oscar | Age | Birth yr |
|---|---|---|---|---|
| Oscar Swanson | Head | — | 46 | ~1894 |
| Richard Swanson | Son | — | 18 | ~1922 |
| Robert Swanson | Son | — | 22 | ~1918 |
| Naomi Swanson | Spouse | — | 45 | ~1895 |
Census Appearances
1910
Los Angeles, …
Son, age 17
Los Angeles, California · implied b. ~1893 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Swanson |
| Given Name | Oscar |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Connecticut |
| Father's Birthplace | Sw. (Sweden) |
| Mother's Birthplace | Sw. (Sweden) |
| Occupation | machinist |
| Industry | machine shop |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Connecticut |
| Birth Country | United States |
| Birthplace (normalized) | connecticut |
1920
Los Angeles, …
Head, age 26
Los Angeles, California · implied b. ~1894 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Swanson |
| Given Name | Oscar |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Connecticut |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Machinist |
| Industry | Oil Station Shop |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Connecticut |
| Birth Country | United States |
| Birthplace (normalized) | connecticut |
1930
Los Angeles, …
Head, age 37
Los Angeles, California · implied b. ~1893
●
Primary link
· ~Confirmed · 1 source
XGBoost
| Surname | Swanson |
| Given Name | Oscar W |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Connecticut |
| Age at First Marriage | 22 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Instrument Maker |
| Industry | Solar Observatory |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 9000 |
| Radio Set | R |
| Veteran | No |
| Birth State | Connecticut |
| Birth Country | United States |
| Birthplace (normalized) | connecticut |
1940
Los-Angeles-County, California
Head, age 46
Los-Angeles-County, California · implied b. ~1894 — 4 household members
| Surname | Swanson |
| Given Name | Oscar E. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Connecticut |
| 1935 Residence (City) | Pasadena |
| 1935 Residence (County) | Los Angeles |
| Occupation | instrument maker |
| Industry | scientific institute |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 2280 |
| Highest Grade | H 3 |
| 1935 Residence | Same house |
| Birth State | Connecticut |
| Birth Country | United States |
| Birthplace (normalized) | connecticut |
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 Oscar Swanson across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Olive Swanson (~0.92 confidence) and mother Emelia Swanson (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Olive Swanson
b. ~1863
Source father
● Household
· direct · ~0.92
Mother
Emelia Swanson
b. ~1863
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Oscar Swanson
Head · 1940 · age 46 · b. ~1894 · California
★ 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 — Los-Angeles-County, California
Open full size
1940 US Federal Census — Los-Angeles-County, California
Page Contents
37 people indexed on this census page (nara:1940:m-t0627-00241-00012)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Lucy Martine | 16 | daughter | — | California |
| 2 | Daniel Martine | 13 | son | — | California |
| 4 | Philip A. Gregory | 33 | Head | Truck Operator | Colorado |
| 5 | Anna Gregory | 33 | wife | — | Oklahoma |
| 6 | Philip A. Jr. Gregory | 15 | son | — | California |
| 7 | Gerald Gregory | 11 | son | — | California |
| 8 | Lorna Gregory | 8 | daughter | — | California |
| 9 | Harvey Lawrence | 20 | brother-in-law | Gardener | Oregon |
| 11 | James A. Grafford | 43 | Head | Bartender | Missouri |
| 12 | Jesse T. Grafford | 43 | brother | Truck Driver | Missouri |
| 13 | Mary C. Rousseau | 54 | Head | Proprietor | New York |
| 14 | Albert J. Mccloskey | 48 | Head | Bartender | Canada-English |
| 16 | Oscar E. Swanson THIS PERSON | 46 | Head | Instrument Maker | Connecticut |
| 17 | Naomi E. Swanson | 45 | wife | — | Missouri |
| 18 | Robert O. Swanson | 22 | son | — | California |
| 19 | Richard E. Swanson | 18 | son | — | California |
| 20 | Samuel S. Faris | 48 | Head | Accountant | Iowa |
| 21 | Ruth E. Faris | 47 | wife | — | Missouri |
| 22 | Cornelius Jr. Rouse | 42 | Head | Common Laborer | Arkansas |
| 23 | Maggie Calhoun | 37 | Lodger | Servant | Oklahoma |
| 24 | May Tenton | 58 | Head | Housekeeper | Missouri |
| 25 | Etta Tenton | 37 | daughter | Housekeeper | Missouri |
| 26 | Annie Tenton | 35 | daughter | Marker | Missouri |
| 27 | Ray Tenton | 33 | son | Tree Surgeon | Missouri |
| 28 | Delphine Tenton | 20 | daughter-in-law | — | Missouri |
| 29 | Warren Nelson | 25 | nephew | Cookman | Colorado |
| 30 | James Roberts | 19 | lodger | Sheet Metal Worker | Missouri |
| 31 | Ernest Hayward | 22 | lodger | Hardware Clerk | California |
| 32 | Dale Mullen | 16 | lodger | Farm Hand | Missouri |
| 33 | Charles Morrow | 12 | lodger | — | Illinois |
| 34 | John Morrow | 9 | lodger | — | Illinois |
| 35 | Stanley Lackey | 7 | lodger | — | Ohio |
| 36 | Harold E. Snyder | 33 | Head | Roller Operator | Missouri |
| 37 | Bernice Snyder | 29 | wife | — | Utah |
| 38 | Dacia A. Snyder | 3 | daughter | — | California |
| 39 | Natalie A. Snyder | 0 | daughter | — | California |
| 40 | Perry S. Putnam | 37 | Head | Barber | Michigan |
Pedigree Summary
Oscar
Gen 1 · 2 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)