JD
John Dillon — 1940 US Census Record
Model Tree available1940 United States Federal Census · Los-Angeles-County, California
Our Model Tree links this John Dillon across the 1920, 1930 and 1940 US Censuses in Los-Angeles-County, California (XGBoost, ~Confirmed), with identified parents John & Katherine — first a son (b.~1911), then head of a 3-person household.
Age 29
b. ~1911
Male
Son
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Los-Angeles-County, California |
| Surname | Dillon |
| Given Name | John J. Jr. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Alhambra City |
| 1935 Residence (County) | Los Angeles |
| Additional Details | |
| Occupation | Brokerage Clerk |
| Industry | Brokers Office |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1250 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | Brokerage Clerk |
| Township / Ward | Alhambra City |
| Est. Birth Year | ~1911 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Dillon | Head | — | 58 | ~1882 |
| John Dillon | Son | — | 29 | ~1911 |
| Katherine Dillon | Spouse | — | 58 | ~1882 |
Census Appearances
1920
Los Angeles, …
Son, age 8
Los Angeles, California · implied b. ~1912 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dillon |
| Given Name | John T. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Kansas |
| Mother's Birthplace | Kansas |
| Speaks English | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1930
Los Angeles, …
Son, age 19
Los Angeles, California · implied b. ~1911 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Dillon |
| Given Name | John F. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Kansas |
| Mother's Birthplace | Kansas |
| Occupation | Clerk |
| Industry | Bank |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
Los-Angeles-County, California
Son, age 29
Los-Angeles-County, California · implied b. ~1911 — 3 household members
| Surname | Dillon |
| Given Name | John J. Jr. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Alhambra City |
| 1935 Residence (County) | Los Angeles |
| Occupation | Brokerage Clerk |
| Industry | Brokers Office |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1250 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
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 Dillon across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Dillon (~0.92 confidence) and mother Katherine Dillon (~0.92 confidence) and mother Catherine Dillon (~0.92 confidence) and mother Catherine Dillon (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Dillon
b. ~1882
Source father
● Household
· direct · ~0.92
Mother
Katherine Dillon
b. ~1882
Source mother
● Household
· direct · ~0.92
Mother
Catherine Dillon
b. ~1885
Source mother
● Household
· direct · ~0.92
Mother
Catherine Dillon
b. ~1893
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Dillon
Son · 1940 · age 29 · b. ~1911 · 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-t0627-00252-00272)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mazietta Meyers | 13 | daughter | — | California |
| 2 | Laura D. Pratt | 74 | head | — | Missouri |
| 3 | Eugene Pratt | 28 | son | Bookkeeper | California |
| 4 | John F. Dillon | 58 | head | Machinist | Kansas |
| 5 | Katherine Dillon | 58 | wife | — | Kansas |
| 6 | John J. Jr. Dillon THIS PERSON | 29 | son | Brokerage Clerk | California |
| 7 | Carlisle Harrod | 47 | head | Fireman | Indiana |
| 8 | Marie M. Harrod | 44 | wife | — | Georgia |
| 9 | Elaine Harrod | 19 | daughter | Stenographer | California |
| 10 | Shirley Harrod | 12 | daughter | — | California |
| 11 | Harold Smith | 34 | brother in law | News Agent | Tennessee |
| 12 | William Armstrong | 37 | head | Fireman | Pennsylvania |
| 13 | Marian Armstrong | 34 | wife | — | Illinois |
| 14 | C. Granville Mccormick | 40 | head | Chief Clerk | Michigan |
| 15 | Martha Mccormick | 40 | wife | — | Kansas |
| 16 | Jennie Mccormick | 75 | head | — | Canada |
| 17 | Frederick Overton | 47 | head | Civil Engineer | Ohio |
| 18 | Mildred Overton | 46 | wife | — | New York |
| 19 | Imogene Overton | 20 | daughter | — | California |
| 20 | Robert C. Overton | 13 | son | — | California |
| 21 | Roland Main | 46 | head | Chauffeur | New York |
| 22 | Marjorie D. Main | 35 | wife | Social Worker | Illinois |
| 23 | Catherine Main | 14 | daughter | — | California |
| 24 | Joan Main | 11 | daughter | — | California |
| 25 | Clarence Burns | 47 | lodger | Farm Hand | Massachusetts |
| 26 | William H. Odell | 74 | head | — | New Jersey |
| 27 | Lucy D. Odell | 69 | wife | — | New Jersey |
| 28 | Bertram Odell | 41 | son | Stationary Engineer | New Jersey |
| 29 | George Odell | 28 | son | Inventory Clerk | New Jersey |
| 30 | Clarence Elliott | 43 | head | Dentist | Kansas |
| 31 | Gladys Elliott | 39 | wife | — | Missouri |
| 32 | Lorilea Elliott | 10 | daughter | — | California |
| 33 | Renee Elliott | 3 | daughter | — | California |
| 34 | Alice M. Chancellor | 78 | mother in law | — | England |
| 35 | Alexander Hunsicker | 34 | head | Baggage Clerk | Pennsylvania |
| 36 | Edna Hunsicker | 31 | wife | — | Pennsylvania |
| 37 | Alexander Jr. Hunsicker | 3 | son | — | California |
| 38 | John Hunsicker | 0 | son | — | California |
| 39 | Gertrude Garst | 48 | head | — | Arkansas |
| 40 | George Garst | 21 | son | Dishwasher | California |
Related Census Records
Pedigree Summary
John
Gen 1 · 4 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)