JL
John Larson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Los-Angeles-County, California
Our Model Tree links this John Larson across the 1920, 1930 and 1940 US Censuses in Los-Angeles-County, California (XGBoost, ~Confirmed) — first a head (b.~1870), then head of a 4-person household.
Age 70
b. ~1870
Male
Head
Born: Sweden
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Los-Angeles-County, California |
| Surname | Larson |
| Given Name | John L. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 70 |
| Marital Status | Married |
| Birthplace | Sweden |
| 1935 Residence (City) | Pasadena city |
| 1935 Residence (County) | Los Angeles |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Grocery Clerk |
| Industry | Retail Grocery Store |
| Class of Worker | PW |
| Hours Worked | 20 |
| Income (1939) | 298 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
| Occupation | Grocery Clerk |
| Township / Ward | Pasadena City |
| Est. Birth Year | ~1870 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| John Larson | Head | — | 70 | ~1870 |
| Hilma Larson | Other | — | 77 | ~1863 |
| Hilmer Larson | Son | — | 35 | ~1905 |
| Louise Larson | Spouse | — | 66 | ~1874 |
Census Appearances
1920
Los Angeles, …
Head, age 50
Los Angeles, California · implied b. ~1870 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Larson |
| Given Name | John L |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Sweden |
| Year of Immigration | 1887 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Merchant |
| Industry | Grocery Store |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Sw |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
1930
Los Angeles, …
Head, age 60
Los Angeles, California · implied b. ~1870 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Larson |
| Given Name | John L. |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 60 |
| Marital Status | Married |
| Birthplace | Sweden |
| Naturalization Status | Naturalized |
| Year of Immigration | 1885 |
| Age at First Marriage | 32 |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | salesman |
| Industry | grocery store |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Swedish |
| Home Owned/Rented | R |
| Home Value / Rent | 30 |
| Radio Set | R |
| Veteran | No |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
1940
Los-Angeles-County, California
Head, age 70
Los-Angeles-County, California · implied b. ~1870 — 4 household members
| Surname | Larson |
| Given Name | John L. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 70 |
| Marital Status | Married |
| Birthplace | Sweden |
| 1935 Residence (City) | Pasadena city |
| 1935 Residence (County) | Los Angeles |
| Naturalization Status | Naturalized |
| Occupation | Grocery Clerk |
| Industry | Retail Grocery Store |
| Class of Worker | PW |
| Hours Worked | 20 |
| Income (1939) | 298 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | Sweden |
| Birthplace (normalized) | sweden |
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 John Larson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Larson
Head · 1940 · age 70 · b. ~1870 · California
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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 — Los-Angeles-County, California
Open full size
1940 US Federal Census — Los-Angeles-County, California
Page Contents
25 people indexed on this census page (nara:1940:m-t0627-00241-00345)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Richard Ayers | 9 | Son | — | Missouri |
| 2 | Ethel Belle Smith | 57 | Housekeeper | Housekeeper | Missouri |
| 3 | John D. Parks | 53 | Head | Automobile Mechanic | Ohio |
| 4 | Myrtle Parks | 48 | Wife | — | Illinois |
| 5 | Alice D. Kerr | 61 | Head | Glazer | England |
| 6 | Joseph O. Dixon | 70 | Lodger | — | South Dakota |
| 7 | Catherine O. White | 84 | Lodger | — | Ohio |
| 8 | Harriet Sherwood | 63 | Lodger | — | New Jersey |
| 9 | Helen Mundy | 23 | Lodger | Waitress | Mississippi |
| 10 | Andrew R. Harrison | 55 | Head | Plasterer | England |
| 11 | Jeanette Harrison | 57 | Wife | — | Illinois |
| 12 | Robert D. Campbell | 76 | Lodger | — | Michigan |
| 13 | Elin Soderstrom | None | Lodger | 0 | at 133 |
| 14 | Lafayette W. Cater | 66 | Lodger | Meter Reader | Louisiana |
| 15 | Lillian Bangham | None | Lodger | — | somewhere |
| 16 | Elmer Thorpe | 26 | Lodger | Dishwasher | Minnesota |
| 17 | Walter Petroff | 31 | Lodger | — | Wisconsin |
| 18 | Helen Gregory | 39 | Lodger | Record Clerk | Indiana |
| 19 | Eleanor D. Burke | 45 | Lodger | News Dealer | Illinois |
| 20 | John L. Larson THIS PERSON | 70 | Head | Grocery Clerk | Sweden |
| 21 | Louise D. Larson | 66 | Wife | — | Colorado |
| 22 | Hilmer E. Larson | 35 | Son | Sound Technician | Colorado |
| 23 | Hilma Larson | 77 | Sister | — | Sweden |
| 24 | William C. Birtzman | 68 | Head | — | Iowa |
| 25 | Lucy B. Birtzman | 66 | Wife | — | Iowa |
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)