DH
David Harris — 1940 US Census Record
Model Tree available1940 United States Federal Census · Los-Angeles-County, California
Our Model Tree links this David Harris across the 1910, 1920, 1930 and 1940 US Censuses in Los-Angeles-County, California (XGBoost, ~Confirmed), with identified parents Mattie — first a head (b.~1883), then head of a 4-person household.
Age 57
b. ~1883
Male
Head
Born: Florida
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Los-Angeles-County, California |
| Surname | Harris |
| Given Name | David |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 57 |
| Marital Status | Married |
| Birthplace | Florida |
| 1935 Residence (City) | Los Angeles |
| 1935 Residence (County) | Los Angeles |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | 6 |
| 1935 Residence | Same place |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
| Township / Ward | Los Angeles |
| Est. Birth Year | ~1883 |
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 David | Age | Birth yr |
|---|---|---|---|---|
| David Harris | Head | — | 57 | ~1883 |
| Florence Smith | Other | — | 76 | ~1864 |
| David Harris | Son | — | 14 | ~1926 |
| Ida Harris | Spouse | — | 60 | ~1880 |
Census Appearances
1910
Los Angeles, …
Other, age 23
Los Angeles, California · implied b. ~1887 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harris |
| Given Name | David |
| Relationship to Head | Step Son |
| Sex | M |
| Color / Race | Black |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Florida |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Florida |
| Occupation | Waiter |
| Industry | Clubhouse |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
1920
Los Angeles, …
Son, age 33
Los Angeles, California · implied b. ~1887 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harris |
| Given Name | David C |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 33 |
| Marital Status | Single |
| Birthplace | Florida |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Florida |
| Occupation | Laborer |
| Industry | Foundry |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
1930
Los Angeles, …
Other, age 45
Los Angeles, California · implied b. ~1885 — 14 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harris |
| Given Name | David |
| Sex | M |
| Color / Race | Black |
| Age | 45 |
| Marital Status | Single |
| Birthplace | Florida |
| Father's Birthplace | United States |
| Mother's Birthplace | Florida |
| Occupation | Laborer |
| Industry | Job to job |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | Roomer |
| Home Value / Rent | R |
| Radio Set | 15.00 |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
1940
Los-Angeles-County, California
Head, age 57
Los-Angeles-County, California · implied b. ~1883 — 4 household members
| Surname | Harris |
| Given Name | David |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 57 |
| Marital Status | Married |
| Birthplace | Florida |
| 1935 Residence (City) | Los Angeles |
| 1935 Residence (County) | Los Angeles |
| Class of Worker | 0 |
| Highest Grade | 6 |
| 1935 Residence | Same place |
| Birth State | Florida |
| Birth Country | United States |
| Birthplace (normalized) | florida |
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 David Harris across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Mattie Harris (~0.92 confidence). The pedigree spans 1 generation with 1 identified ancestor.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Mattie Harris
b. ~1871
Source mother
● Household
· direct · ~0.92
This person
Anchor record
David Harris
Head · 1940 · age 57 · b. ~1883 · 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-t0627-00414-00383)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ronaldo Donahue | 37 | Head | Washing Autos | Texas |
| 2 | Reginald Donahue | 15 | Son | — | California |
| 3 | Pearl Donahue | 13 | Daughter | — | California |
| 4 | Pauline Donahue | 11 | Daughter | — | California |
| 5 | Peggy Donahue | 9 | Daughter | — | California |
| 6 | Ida Mae Hall | 77 | Head | — | Ohio |
| 7 | Clifford R. Eckert | 59 | Son | — | Ohio |
| 8 | Leo Van Dange | 46 | Head | Salesman | Indiana |
| 9 | Merle Van Dange | 32 | Wife | — | Indiana |
| 10 | Roger Van Dange | 6 | Son | — | California |
| 11 | William Taylor | 47 | Head | Attendant | Washington |
| 12 | Leona Taylor | 39 | Wife | Maid | California |
| 13 | Florine Brown | 16 | Daughter | — | California |
| 14 | Willis Hogan | 49 | Head | Janitor | Texas |
| 15 | Mary Hogan | 36 | Wife | — | Texas |
| 16 | Thos B. Sexton | 59 | Head | Helper | Arkansas |
| 17 | Marie Sexton | 60 | Wife | — | France |
| 18 | Jennie Pennachio | 54 | Head | — | Italy |
| 19 | Leo Ferrara | 37 | Son-in-law | Clerk | California |
| 20 | Katherine Ferrara | 32 | Daughter | Clerk | New York |
| 21 | Jeanne Jane Ferrara | 12 | Gr-daughter | — | California |
| 22 | Anthony Ferrara | 8 | Gr-son | — | California |
| 23 | William Johnson | 29 | Head | Attendant | California |
| 24 | Mamie Johnson | 26 | Wife | — | California |
| 25 | Althea Beamon | 20 | Lodger | Maid | California |
| 26 | John Daugherty | 46 | Head | Laborer | Maryland |
| 27 | Cora Daugherty | 38 | Wife | — | Penn |
| 28 | Charles C. Ciongoli | 31 | Head | Clerk | Penn |
| 29 | Angeline Ciongoli | 27 | Wife | — | Illinois |
| 30 | Frankie Ciongoli | 4 | Son | — | California |
| 31 | Candida C. Ciongoli | 3 | Daughter | — | California |
| 32 | Florence Ciongoli | 2 | Daughter | — | California |
| 33 | Alphonso Ciongoli | 0 | Son | — | California |
| 34 | David Harris THIS PERSON | 57 | Head | — | Florida |
| 35 | Ida V. Harris | 60 | Wife | — | Texas |
| 36 | David Jr. Harris | 14 | Son | — | Texas |
| 37 | Florence Smith | 76 | Mother | — | Texas |
| 38 | Lillian Rhone | 33 | Head | — | Texas |
| 39 | Randolph Johnson | 1 | Son | — | California |
| 40 | Clarence Williams | 48 | Head | Cook | Mass |
Pedigree Summary
David
Gen 1 · 1 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)