DJ
Dorothy Jackson — 1940 US Census Record
Model Tree available1940 United States Federal Census · San-Francisco-County, California
Our Model Tree links this Dorothy Jackson across the 1920, 1930 and 1940 US Censuses in San-Francisco-County, California (XGBoost, ~Confirmed), with identified parents Smith & Malcolm — first a daughter (b.~1917), then head of a 4-person household.
Age 23
b. ~1917
Female
Daughter
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | San-Francisco-County, California |
| Surname | Jackson |
| Given Name | Dorothy |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | San Francisco |
| 1935 Residence (County) | San Francisco |
| Additional Details | |
| Industry | U |
| Class of Worker | 0 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Township / Ward | San Francisco |
| Est. Birth Year | ~1917 |
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 Dorothy | Age | Birth yr |
|---|---|---|---|---|
| Dorothy Jackson | Daughter | — | 23 | ~1917 |
| Smith Jackson | Head | — | 72 | ~1868 |
| Warren Avery | Other | — | 22 | ~1918 |
| Grace Jackson | Spouse | — | 60 | ~1880 |
Census Appearances
1920
San Francisco, …
Daughter, age 2
San Francisco, California · implied b. ~1918 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jackson |
| Given Name | Dorothy |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Canada |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1930
San Francisco, …
Daughter, age 13
San Francisco, California · implied b. ~1917 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Jackson |
| Given Name | Dorothy M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Michigan |
| Mother's Birthplace | California |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
San-Francisco-County, California
Daughter, age 23
San-Francisco-County, California · implied b. ~1917 — 4 household members
| Surname | Jackson |
| Given Name | Dorothy |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | San Francisco |
| 1935 Residence (County) | San Francisco |
| Industry | U |
| Class of Worker | 0 |
| 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 Dorothy Jackson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Smith Jackson (~0.92 confidence) and father Malcolm Jackson (~0.92 confidence) and father William Jackson (~0.92 confidence) and mother Grace Jackson (~0.92 confidence) and mother Grace Jackson (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Smith Jackson
b. ~1868
Source father
● Household
· direct · ~0.92
Father
Malcolm Jackson
b. ~1869
Source father
● Household
· direct · ~0.92
Father
William Jackson
b. ~1869
Source father
● Household
· direct · ~0.92
Mother
Grace Jackson
b. ~1880
Source mother
● Household
· direct · ~0.92
Mother
Grace Jackson
b. ~1880
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Dorothy Jackson
Daughter · 1940 · age 23 · b. ~1917 · 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 — San-Francisco-County, California
Open full size
1940 US Federal Census — San-Francisco-County, California
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00315-00493)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Mary O'Sullivan | 31 | Wife | — | California |
| 42 | John O'Sullivan | 1 | Son | — | California |
| 43 | Smith Jackson | 72 | Head | Foreman | Michigan |
| 44 | Grace Jackson | 60 | Wife | — | Canada |
| 45 | Dorothy Jackson THIS PERSON | 23 | Daughter | — | California |
| 46 | Warren Avery | 22 | Nephew | Attendant | Illinois |
| 47 | Thomas O'Neil | 40 | Head | Salesman | California |
| 48 | Neva O'Neil | 41 | Wife | — | Massachusetts |
| 49 | George Smith | 51 | Head | — | California |
| 50 | Everett Pendleton | 30 | Head | Mechanic | Utah |
| 51 | Bessie Pendleton | 27 | Wife | — | California |
| 52 | Luther Daniels | 27 | Head | Janitor | California |
| 53 | Irene Daniels | 20 | Wife | — | California |
| 54 | Rose Daniels | 2 | Daughter | — | California |
| 55 | Lloyd Watson | 38 | Head | Repairman | California |
| 56 | Edna Watson | 35 | Wife | Nurse | California |
| 57 | Axel Wilson | 46 | Head | Tailor | Finland |
| 58 | Betty Wilson | 48 | Wife | Maid | Finland |
| 59 | Bruno Wilson | 16 | Son | — | California |
| 60 | Richard Fice | 58 | Head | — | California |
| 61 | Herbert Starr | 40 | Head | Bartender | So Dakota |
| 62 | Tornie Starr | 34 | Wife | — | Finland |
| 63 | Ruby Strothoff | 45 | Head | Auditor | California |
| 64 | Karl Lindholm | 55 | Head | Carpenter | Finland |
| 65 | Anna Lindholm | 60 | Wife | — | Finland |
| 66 | Elton Peters | 37 | Head | Welder | Missouri |
| 67 | Ruth Peters | 33 | Wife | — | Utah |
| 68 | Gail Peters | 11 | Son | — | California |
| 69 | Gail Peters | 8 | Son | — | California |
| 70 | George Frahm | 59 | Head | Sheet Metal Wkr. | California |
| 71 | Laura Frahm | 59 | Wife | — | California |
| 72 | Harvey Dalbey | 34 | Head | Cook | California |
| 73 | Lola Dalbey | 34 | Wife | Checker | Pennsylvania |
| 74 | Lars Hedberg | 26 | Head | Baker | Kansas |
| 75 | Marjorie Hedberg | 20 | Wife | — | Missouri |
| 76 | Jack Hedberg | 1 | Son | — | California |
| 77 | Samuel Radley | 32 | Head | Plumber | England |
| 78 | Katherine Radley | 34 | Wife | — | California |
| 79 | Anne Radley | 5 | Daughter | — | California |
| 80 | Jacqueline Radley | 1 | Daughter | — | California |
Pedigree Summary
Dorothy
Gen 1 · 5 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)