RT
Ralph Thompson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Los-Angeles-County, California
Our Model Tree links this Ralph Thompson across the 1920, 1930 and 1940 US Censuses in Los-Angeles-County, California (XGBoost, ~Confirmed), with identified parents Reuben & Reuben — first a son (b.~1896), then head of a 5-person household.
Age 44
b. ~1896
Male
Son
Born: Colorado
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Los-Angeles-County, California |
| Surname | Thompson |
| Given Name | Ralph H |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 44 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | Ashland Jackson |
| Additional Details | |
| Occupation | Trucker |
| Industry | Flour mill |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 998 |
| Highest Grade | H 4 |
| 1935 Residence | Oregon |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Occupation | Trucker |
| Township / Ward | Los Angeles City |
| Est. Birth Year | ~1896 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Ralph | Age | Birth yr |
|---|---|---|---|---|
| Ralph Thompson | Son | — | 44 | ~1896 |
| Florence Thompson | Other | — | 20 | ~1920 |
| Minnie Thompson | Spouse | — | 72 | ~1868 |
| Ella Thompson | Daughter | — | 46 | ~1894 |
| Reuben Thompson | Head | — | 77 | ~1863 |
Census Appearances
1920
Sacramento, California
Son, age 24
Sacramento, California · implied b. ~1896 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Ralph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | Bookkeeper |
| Industry | Cannery |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1930
Orange, California
Son, age 34
Orange, California · implied b. ~1896 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Ralph H |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | Clerk |
| Industry | Postoffice |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1940
Los-Angeles-County, California
Son, age 44
Los-Angeles-County, California · implied b. ~1896 — 5 household members
| Surname | Thompson |
| Given Name | Ralph H |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 44 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | Ashland Jackson |
| Occupation | Trucker |
| Industry | Flour mill |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 998 |
| Highest Grade | H 4 |
| 1935 Residence | Oregon |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
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 Ralph Thompson across 3 US Census years (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage. Identified parents: father Reuben Thompson (~0.92 confidence) and father Reuben Thompson (~0.92 confidence) and father Ruben Thompson (~0.92 confidence) and mother Minnie Thompson (~0.92 confidence) and mother Minnie Thompson (~0.92 confidence) and mother Minnie Thompson (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Reuben Thompson
b. ~1863
Source father
● Household
· direct · ~0.92
Father
Reuben Thompson
b. ~1863
Source father
● Household
· direct · ~0.92
Father
Ruben Thompson
b. ~1863
Source father
● Household
· direct · ~0.92
Mother
Minnie Thompson
b. ~1867
Source mother
● Household
· direct · ~0.92
Mother
Minnie Thompson
b. ~1867
Source mother
● Household
· direct · ~0.92
Mother
Minnie Thompson
b. ~1868
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Ralph Thompson
Son · 1940 · age 44 · b. ~1896 · California
★ You are viewing this record
Sibling
Ella Thompson
Sibling · 1940 · age 46
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 — 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-t0627-00381-00211)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Harry H Weidenreich | 46 | Head | Medical Doctor | Washington |
| 2 | Clara B Weidenreich | 43 | Wife | — | Washington |
| 3 | Eugene S Weidenreich | 13 | Son | — | California |
| 4 | Gustave H Richner | 64 | Head | Artist | Canada French |
| 5 | Marie R Richner | 46 | Wife | — | Louisiana |
| 6 | Dardine P Bradford | 8 | Granddaughter | — | California |
| 7 | Charles W Dockham | 30 | Head | Janitor | Maine |
| 8 | Marjorie M Dockham | 33 | Wife | Receptionist | Iowa |
| 9 | Barbara J Sheldon | 11 | Stepdaughter | — | Michigan |
| 10 | Alpha B Anices | 34 | Lodger | Nurse | Missouri |
| 11 | Earle G Borman | 50 | Head | Repair Man | Indiana |
| 12 | Ada F Borman | 60 | Wife | — | Oregon |
| 13 | Herbert E Heikes | 49 | Head | Operator Linotype | Pennsylvania |
| 14 | Myrtle R Heikes | 46 | Wife | — | West Virginia |
| 15 | James J Mandell | 52 | Head | Bell Hop | Vermont |
| 16 | Grace J Mandell | 52 | Wife | — | Iowa |
| 17 | James R Mandell | 11 | Son | — | California |
| 18 | Edward L Merchant | 72 | Head | Broker | Illinois |
| 19 | Emma Stroud | 53 | Head | Housekeeper | Iowa |
| 20 | Gerald J Mudgett | 52 | Lodger | Salesman | Kansas |
| 21 | Reuben E Thompson | 77 | Head | — | Iowa |
| 22 | Minnie H Thompson | 72 | Wife | — | Iowa |
| 23 | Ralph H Thompson THIS PERSON | 44 | Son | Trucker | Colorado |
| 24 | Ella R Thompson | 46 | Daughter | — | Colorado |
| 25 | Florence E Thompson | 20 | Granddaughter | — | California |
| 26 | Frank Wesseling | 55 | Head | Proprietor | Netherlands |
| 27 | Cornelia Wesseling | 45 | Wife | — | Netherlands |
| 28 | Adrian Wesseling | 22 | Son | Laborer | Michigan |
| 29 | Alonzo G Mckenzie | 75 | Head | — | Indiana |
| 30 | Ida Mckenzie | 68 | Wife | — | Illinois |
| 31 | Jesse R Leach | 48 | stepson | Proprietor | Missouri |
| 32 | Russell E Johnson | 48 | Head | Truck Driver | California |
| 33 | Helen F Johnson | 39 | Wife | — | California |
| 34 | John H Cooper | 28 | Lodger | Social Worker | Canada English |
| 35 | Ernest F Styhl | 42 | Head | Laborer | Idaho |
| 36 | Sylvia I Styhl | 39 | Wife | — | Colorado |
| 37 | Beatrice A Styhl | 20 | daughter | New Worker | Idaho |
| 38 | Irene B Styhl | 18 | daughter | New Worker | Idaho |
| 39 | Ernest Jr Styhl | 4 | son | — | California |
| 40 | Mary Ellen Styhl | 1 | daughter | — | California |
Pedigree Summary
Ralph + 1 sibling
Gen 1 · 6 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)