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John Mcdowell — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Los-Angeles-County, California
Our Model Tree links this John Mcdowell across the 1930 and 1940 US Censuses in Los-Angeles-County, California (XGBoost, ~Confirmed) — first a son (b.~1926), then head of a 9-person household.
Age 14
b. ~1926
Male
Son
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Los-Angeles-County, California |
| Surname | McDowell |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Los Angeles |
| 1935 Residence (County) | Los Angeles |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Township / Ward | Los Angeles |
| Est. Birth Year | ~1926 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Mcdowell | Son | — | 14 | ~1926 |
| Lewis Mcdowell | Son | — | 19 | ~1921 |
| Mary Mcdowell | Daughter | — | 2 | ~1938 |
| Mary Mcdowell | Spouse | — | 41 | ~1899 |
| Donald Mcdowell | Son | — | 12 | ~1928 |
| Ray Mcdowell | Head | — | 41 | ~1899 |
| Barbara Mcdowell | Daughter | — | 10 | ~1930 |
| Mickey Mcdowell | Son | — | 16 | ~1924 |
| Caroline Mcdowell | Daughter | — | 17 | ~1923 |
Census Appearances
1930
Los Angeles, …
Son, age 3
Los Angeles, California · implied b. ~1927 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDowell |
| Given Name | John W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Kansas |
| Mother's Birthplace | Kansas |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
Los-Angeles-County, California
Son, age 14
Los-Angeles-County, California · implied b. ~1926 — 9 household members
| Surname | McDowell |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Los Angeles |
| 1935 Residence (County) | Los Angeles |
| Income (1939) | 0 |
| Highest Grade | No 5 |
| 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 Mcdowell across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Mcdowell
Son · 1940 · age 14 · b. ~1926 · California
★ You are viewing this record
Sibling
Lewis Mcdowell
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Barbara Mcdowell
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Mcdowell
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Mcdowell
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mickey Mcdowell
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Caroline Mcdowell
Sibling · 1940 · age 17
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-t0627-00377-00712)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | William A. Bass | 62 | Head | — | Michigan |
| 2 | R. Maude Bass | 62 | Wife | — | Virginia |
| 3 | June Palmer | 14 | Head | Owner | Iowa |
| 4 | Bertha Gardner | 59 | Partner | Asst. Chef | Iowa |
| 5 | Ray Mcdowell | 41 | Head | Cabinet Setter | Kansas |
| 6 | Mary Mcdowell | 41 | Wife | — | Kansas |
| 7 | Lewis J. Mcdowell | 19 | Son | New Worker | Kansas |
| 8 | Caroline Mcdowell | 17 | Daughter | — | Kansas |
| 9 | Mickey Mcdowell | 16 | Son | — | Kansas |
| 10 | John Mcdowell THIS PERSON | 14 | Son | — | California |
| 11 | Donald Mcdowell | 12 | Son | — | California |
| 12 | Barbara Mcdowell | 10 | Daughter | — | California |
| 13 | Mary Lou Mcdowell | 2 | Daughter | — | California |
| 14 | John E. Pritchett | 43 | Head | Laborer | Washington |
| 15 | Jessie Pritchett | 47 | Wife | Owner Manager | Oregon |
| 16 | Beatrice Pritchett | 19 | Daughter | — | Illinois |
| 17 | Shirley Pritchett | 14 | Daughter | — | Oregon |
| 18 | Alice Jess | 19 | Lodger | Helper | California |
| 19 | Peter Johnson | 57 | Head | Carpenter | Nebraska |
| 20 | Alta Johnson | 47 | Wife | — | Ohio |
| 21 | Ada R. Johnson | 22 | Daughter | Clerk | Colorado |
| 22 | Milford Johnson | 25 | Nephew | Truck Driver | Nebraska |
| 23 | Marie L. Verdugo | 60 | Head | Principal | Indiana |
| 24 | Selma P. Sexton | 59 | Patient | — | Iowa |
| 25 | Howard C. Lemon | 36 | Patient | Chemist | Oklahoma |
| 26 | Thomas E. Wall | 64 | Patient | Groceryman | Minnesota |
| 27 | George F. Sperline | 61 | Patient | Machinist | Ohio |
| 28 | Otto Alberts | 43 | Patient | — | Illinois |
| 29 | Howard S. Crowe | 37 | Head | Organizer | Michigan |
| 30 | Charlotte Crowe | 33 | Wife | Saleslady | New York |
| 31 | Gerald E. Crowe | 9 | Son | — | California |
| 32 | Effie Smith | 67 | Head | — | Pennsylvania |
| 33 | Bertha Shelton | 34 | Head | — | California |
| 34 | Franklin Shelton | 11 | Son | — | Oklahoma |
| 35 | Wilson Jr. Shelton | 7 | Son | — | Oklahoma |
| 36 | Coston Shelton | 18 | Son | Attendant | Oklahoma |
| 37 | Dolores Shelton | 17 | Daughter | — | Michigan |
| 38 | Harlan Heule | 40 | Lodger | Helper | Iowa |
| 39 | Earl Runbell | 43 | Head | Sergeant | Iowa |
| 40 | Gladys Runbell | 41 | Wife | — | Tennessee |
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)