BJ
Barbara Johnson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · San-Francisco-County, California
Our Model Tree links this Barbara Johnson across the 1930 and 1940 US Censuses in San-Francisco-County, California (XGBoost, ~Confirmed) — first a daughter (b.~1924), then head of a 11-person household.
Age 16
b. ~1924
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | San-Francisco-County, California |
| Surname | Johnson |
| Given Name | Barbara |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | San Francisco |
| 1935 Residence (County) | San Francisco |
| Additional Details | |
| Highest Grade | H 2 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | San Francisco |
| Est. Birth Year | ~1924 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Barbara | Age | Birth yr |
|---|---|---|---|---|
| Dorothy Johnson | Daughter | — | 7 | ~1933 |
| Barbara Johnson | Daughter | — | 16 | ~1924 |
| Eugene Casillaga | Head | — | 25 | ~1915 |
| Margaret Moss | Other | — | 12 | ~1928 |
| James Christensen | Son | — | 7 | ~1933 |
| Charles Johnson | Son | — | 13 | ~1927 |
| John Orso | Son | — | 22 | ~1918 |
| Robert Johnson | Son | — | 11 | ~1929 |
| Eugene Casillaga | Son | — | ~1940 | |
| Alan Johnson | Son | — | 10 | ~1930 |
| Florence Casillaga | Spouse | — | 27 | ~1913 |
Census Appearances
1930
San Francisco, …
Daughter, age 5
San Francisco, California · implied b. ~1925 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Barbara M |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
San-Francisco-County, California
Daughter, age 16
San-Francisco-County, California · implied b. ~1924 — 11 household members
| Surname | Johnson |
| Given Name | Barbara |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | San Francisco |
| 1935 Residence (County) | San Francisco |
| Highest Grade | H 2 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Barbara Johnson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Barbara Johnson
Daughter · 1940 · age 16 · b. ~1924 · California
★ You are viewing this record
Sibling
Dorothy Johnson
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eugene Casillaga
Sibling · 1940 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alan Johnson
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Johnson
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Johnson
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Orso
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Christensen
Sibling · 1940 · age 7
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 — 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-t0627-00309-00220)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Block 57 Duvald | None | — | — | — |
| 42 | Richard Misuraca | 11 | Son | — | California |
| 43 | Dolores Misuraca | 10 | Daughter | — | California |
| 44 | Block 36 | None | — | — | — |
| 45 | George E. Ingham | 50 | Head | Teamster | California |
| 46 | Sadie Ingham | 46 | Wife | — | California |
| 47 | Georgian Ingham | 21 | Daughter | — | California |
| 48 | Patsy G. Ingham | 20 | Daughter | Bookbinder | California |
| 49 | Block 60 | None | — | — | — |
| 50 | Alie O. Jr. Harman | 7 | Son | — | California |
| 51 | Richard Harman | 5 | Son | — | California |
| 52 | Frank Mazzilli | 11 | Son | — | California |
| 53 | John E. Martin | 8 | Foster child | — | California |
| 54 | Block 49 | None | — | — | — |
| 55 | James Wardlaw | 20 | Son | Steward | Scotland |
| 56 | Gordon Wardlaw | 19 | Son | Butcher | California |
| 57 | Russell Wardlaw | 19 | Son | — | California |
| 58 | Block 61 | None | — | — | — |
| 59 | Richard A. Jr. Pitto | 0 | Son | — | California |
| 60 | Block 60 | None | — | — | — |
| 61 | Anthony Morando | 9 | Son | — | California |
| 62 | Rose Morando | 1 | Daughter | — | California |
| 63 | Viola D'Angelo | 20 | Sister in law | New Worker | New York |
| 64 | Alberta Baader | 14 | Daughter | — | California |
| 65 | George Baader | 9 | Son | — | California |
| 66 | Block 49 | None | — | — | — |
| 67 | Eugene M. Casillaga | 25 | Head | Salesman | California |
| 68 | Florence H. Casillaga | 27 | Wife | — | California |
| 69 | Eugene M. Jr. Casillaga | 0 | Son | — | California |
| 70 | Block 60 | None | — | — | — |
| 71 | Margaret Moss | 12 | Lodger | — | California |
| 72 | James E. Christensen | 7 | Son | — | California |
| 73 | Block 58 | None | — | — | — |
| 74 | John Orso | 22 | Son | Mill Worker | California |
| 75 | Block 61 | None | — | — | — |
| 76 | Barbara Johnson THIS PERSON | 16 | Daughter | — | Illinois |
| 77 | Charles R. Johnson | 13 | Son | — | California |
| 78 | Robert M. Johnson | 11 | Son | — | California |
| 79 | Alan J. Johnson | 10 | Son | — | California |
| 80 | Dorothy S. Johnson | 7 | Daughter | — | California |
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)