PJ
Patricia Johnson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · San-Francisco-County, California
Our Model Tree links this Patricia Johnson across the 1930 and 1940 US Censuses in San-Francisco-County, California (XGBoost, ~Confirmed) — first a daughter (b.~1928), then head of a 8-person household.
Age 12
b. ~1928
Female
Daughter
Born: California
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | San-Francisco-County, California |
| Surname | Johnson |
| Given Name | Patricia |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | San Francisco |
| Additional Details | |
| Industry | 0 |
| Highest Grade | No 6 |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Township / Ward | San Francisco |
| Est. Birth Year | ~1928 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Patricia | Age | Birth yr |
|---|---|---|---|---|
| Mary Johnson | Daughter | — | 3 | ~1937 |
| Elizabeth Johnson | Daughter | — | 17 | ~1923 |
| Paulina Johnson | Daughter | — | 12 | ~1928 |
| Marion Johnson | Spouse | — | 43 | ~1897 |
| Elmer Johnson | Head | — | 39 | ~1901 |
| Richard Johnson | Son | — | 16 | ~1924 |
| Patricia Johnson | Daughter | — | 12 | ~1928 |
| Elma Johnson | Son | — | 18 | ~1922 |
Census Appearances
1930
San Francisco, …
Daughter, age 1
San Francisco, California · implied b. ~1929 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnson |
| Given Name | Patricia L |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | Vermont |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
San-Francisco-County, California
Daughter, age 12
San-Francisco-County, California · implied b. ~1928 — 8 household members
| Surname | Johnson |
| Given Name | Patricia |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | San Francisco |
| Industry | 0 |
| Highest Grade | No 6 |
| 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 Patricia Johnson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Patricia Johnson
Daughter · 1940 · age 12 · b. ~1928 · California
★ You are viewing this record
Sibling
Elizabeth Johnson
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paulina Johnson
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Johnson
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Johnson
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elma Johnson
Sibling · 1940 · age 18
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-t0627-00311-00260)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | August Fahlberg | 76 | Head | — | Germany |
| 42 | Cary Patton | 66 | Head | — | New York |
| 43 | Merlin Goodroe | 47 | Lodger | Petroleum Company | Connecticut |
| 44 | Joseph H. Raymond | 56 | Head | Post Office | California |
| 45 | Julie Raymond | 46 | Wife | City Government | California |
| 46 | Joseph Jr Raymond | 16 | Son | — | California |
| 47 | Paul J. Raymond | 11 | Son | — | California |
| 48 | Elmer Johnson | 39 | Head | Brewery | California |
| 49 | Marion Johnson | 43 | Wife | — | California |
| 50 | Elma Johnson | 18 | Son | Theater | California |
| 51 | Elizabeth Johnson | 17 | Daughter | — | California |
| 52 | Richard Johnson | 16 | Son | — | California |
| 53 | Patricia Johnson THIS PERSON | 12 | Daughter | — | California |
| 54 | Paulina Johnson | 12 | Daughter | — | California |
| 55 | Mary Lou Johnson | 3 | Daughter | — | California |
| 56 | Margaret Dolan | 44 | Head | Pac. Gas + Electric Company | California |
| 57 | Mary Dolan | 78 | Mother | — | Ireland |
| 58 | Katherine Dolan | 41 | Sister | — | California |
| 59 | Harry Fraser | 60 | Head | Machine Shop | California |
| 60 | Helen Fraser | 62 | Wife | — | Maine |
| 61 | Harry Jr Fraser | 33 | Son | Department Store | California |
| 62 | Helen Johnson | 31 | Daughter | — | California |
| 63 | Ione Snipes | 72 | Sister-in-law | — | Maine |
| 64 | Marilyn Johnson | 2 | Grandchild | — | California |
| 65 | Parley Pratt | 55 | Head | Steamship Co | Utah |
| 66 | Esther Pratt | 54 | Wife | — | California |
| 67 | Edward Capt Dullea | 53 | Head | Municipal | California |
| 68 | Georgina Dullea | 50 | Wife | — | California |
| 69 | Harvey D. Dennis | 55 | Head | Custom House | California |
| 70 | Violet M. Cardoza | 48 | Sister | Federal Government | California |
| 71 | Kate Buckner | 85 | Aunt | — | Penn |
| 72 | Michael White | 56 | Head | Warehouse General | Eire (Irish Free State) |
| 73 | Anna White | 64 | Wife | — | Eire (Irish Free State) |
| 74 | John F. Dempsey | 40 | Head | Taxi Cab | California |
| 75 | Clara Starr | 53 | Head | Department Store | California |
| 76 | Anthony Starr | 26 | Son | Steel | California |
| 77 | P. M. Bell | 60 | Head | Merchandise | Minnesota |
| 78 | Michael Miller | 57 | Head | Brewery | Austria |
| 79 | Anna Miller | 52 | Wife | — | Colorado |
| 80 | Robert D. O'Toole | 36 | Head | Elevator Co | Idaho |
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)