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John Spencer — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Los-Angeles-County, California
Our Model Tree links this John Spencer across the 1920, 1930 and 1940 US Censuses in Los-Angeles-County, California (XGBoost, ~Confirmed) — first a head (b.~1874), then head of a 4-person household.
Age 66
b. ~1874
Male
Head
Born: Ohio
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Los-Angeles-County, California |
| Surname | Spencer |
| Given Name | John F. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 66 |
| Marital Status | Married |
| Birthplace | Ohio |
| 1935 Residence (City) | South Gate City |
| 1935 Residence (County) | Los Angeles |
| Additional Details | |
| Occupation | Locomotive Engineer |
| Industry | Steam Rail Road |
| Class of Worker | PW |
| Hours Worked | 51 |
| Income (1939) | 2700 |
| Highest Grade | H-4 |
| 1935 Residence | Same Place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Locomotive Engineer |
| Township / Ward | South Gate City |
| Est. Birth Year | ~1874 |
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 |
|---|---|---|---|---|
| Louise Spencer | Daughter | — | 21 | ~1919 |
| John Spencer | Head | — | 66 | ~1874 |
| Harold Spencer | Son | — | 24 | ~1916 |
| Jennie Spencer | Spouse | — | 68 | ~1872 |
Census Appearances
1920
Los Angeles, …
Head, age 45
Los Angeles, California · implied b. ~1875 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Spencer |
| Given Name | John F. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Ohio |
| Father's Birthplace | Germany |
| Mother's Birthplace | England |
| Occupation | Engineer |
| Industry | Railroad |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | German |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1930
Los Angeles, …
Head, age 56
Los Angeles, California · implied b. ~1874 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Spencer |
| Given Name | John C. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 56 |
| Marital Status | Married |
| Birthplace | Ohio |
| Age at First Marriage | 29 |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | Ohio |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 15 |
| Radio Set | R |
| Veteran | No |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Los-Angeles-County, California
Head, age 66
Los-Angeles-County, California · implied b. ~1874 — 4 household members
| Surname | Spencer |
| Given Name | John F. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 66 |
| Marital Status | Married |
| Birthplace | Ohio |
| 1935 Residence (City) | South Gate City |
| 1935 Residence (County) | Los Angeles |
| Occupation | Locomotive Engineer |
| Industry | Steam Rail Road |
| Class of Worker | PW |
| Hours Worked | 51 |
| Income (1939) | 2700 |
| Highest Grade | H-4 |
| 1935 Residence | Same Place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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 Spencer across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Spencer
Head · 1940 · age 66 · b. ~1874 · 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
40 people indexed on this census page (nara:1940:m-t0627-00247-00593)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Juanita Souder | 48 | Wife | Assistant Transfer Clerk | Missouri |
| 42 | Ruth Souder | 19 | Daughter | — | Wyoming |
| 43 | John F. Spencer THIS PERSON | 66 | Head | Locomotive Engineer | Ohio |
| 44 | Jennie Spencer | 68 | Wife | — | Colorado |
| 45 | Harold R. Spencer | 24 | Son | Musician | California |
| 46 | Louise Spencer | 21 | Daughter | Training | Oklahoma |
| 47 | Roy K. Winkones | 36 | Head | Truck Driver | Norway |
| 48 | Lempi S. Winkones | 37 | Wife | — | New York |
| 49 | Astrid Winkones | 11 | Daughter | — | New York |
| 50 | Linda Winkones | 1 | Daughter | — | California |
| 51 | Lena C. Jacobs | 77 | Head | — | Denmark |
| 52 | Peter Caron | 69 | Lodger | Carpenter | Canada French |
| 53 | Ollie Caron | 63 | Lodger | — | Illinois |
| 54 | Jesse Mason | 48 | Head | Lighting Maintenance | Iowa |
| 55 | Katherine Mason | 41 | Wife | — | Germany |
| 56 | Patricia Mason | 18 | Daughter | — | California |
| 57 | Albert Redden | 60 | Head | School Principal | Arkansas |
| 58 | Welthy Redden | 50 | Wife | — | Pennsylvania |
| 59 | Milton V. Lacey | 49 | Head | Machinist | Missouri |
| 60 | Madge Lacey | 44 | Wife | — | Colorado |
| 61 | Norma Lacey | 16 | Daughter | — | Colorado |
| 62 | Nellie Long | 68 | Mother-in-law | — | West Virginia |
| 63 | Eva Cox | 50 | Head | Nurse | Iowa |
| 64 | Byron T. Miller | 52 | Head | Safety Engineer | Ohio |
| 65 | Violet Miller | 34 | Wife | — | England |
| 66 | Edward Miller | 16 | Son | — | California |
| 67 | Ethel Miller | 11 | Daughter | — | California |
| 68 | La Rue Carpenter | 38 | Head | Inspector | Montana |
| 69 | Terry Carpenter | 16 | Son | Playground Assistant | Montana |
| 70 | Orville Criswell | 38 | Lodger | Field Worker | Oklahoma |
| 71 | Edward Durnig | 58 | Head | Deliveryman | Illinois |
| 72 | Winifred Durnig | 45 | Wife | — | California |
| 73 | Leonard L. Hippen | 42 | Head | Assembling | Texas |
| 74 | Viola M. Hippen | 38 | Wife | Seamstress | California |
| 75 | Leonard Jr. Hippen | 17 | Son | — | California |
| 76 | Owen Hayden | 45 | Head | Laborer | Colorado |
| 77 | Melva O. Hayden | 43 | Wife | — | Wisconsin |
| 78 | Shirley Hayden | 18 | Daughter | — | Colorado |
| 79 | Stanley Hayden | 15 | Son | — | Arizona |
| 80 | James Hayden | 4 | Son | — | 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)