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William Johnston — 1940 US Census Record
Linked across censuses1940 United States Federal Census · San-Francisco-County, California
Our Model Tree links this William Johnston across the 1920, 1930 and 1940 US Censuses in San-Francisco-County, California (XGBoost, ~Confirmed) — first a head (b.~1886), then head of a 6-person household.
Age 54
b. ~1886
Male
Head
Born: England
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | San-Francisco-County, California |
| Surname | Johnston |
| Given Name | William J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | England |
| 1935 Residence (City) | San Francisco |
| 1935 Residence (County) | San Francisco |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Blacksmith Helper |
| Industry | Shipyard |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1200 |
| Highest Grade | 7 |
| 1935 Residence | Same Place |
| Birth Country | England |
| Birthplace (normalized) | england |
| Occupation | Blacksmith Helper |
| Township / Ward | San Francisco |
| Est. Birth Year | ~1886 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Margaret Johnston | Daughter | — | 20 | ~1920 |
| William Johnston | Head | — | 54 | ~1886 |
| James Jordon | Other | — | 39 | ~1901 |
| Marguerite Solomon | Other | — | 35 | ~1905 |
| William Johnston | Son | — | 23 | ~1917 |
| Sadie Johnston | Spouse | — | 45 | ~1895 |
Census Appearances
1920
San Francisco, …
Head, age 34
San Francisco, California · implied b. ~1886 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnston |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | England |
| Year of Immigration | 1906 |
| Naturalization Status | First papers filed |
| Father's Birthplace | England |
| Mother's Birthplace | Scotland |
| Occupation | Locksmith |
| Industry | R.R. Shop |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Birth Country | England |
| Birthplace (normalized) | england |
1930
San Francisco, …
Head, age 42
San Francisco, California · implied b. ~1888 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Johnston |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | England |
| Naturalization Status | Naturalized |
| Year of Immigration | 1906 |
| Age at First Marriage | 28 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Blacksmith |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | R |
| Birth Country | England |
| Birthplace (normalized) | england |
1940
San-Francisco-County, California
Head, age 54
San-Francisco-County, California · implied b. ~1886 — 6 household members
| Surname | Johnston |
| Given Name | William J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | England |
| 1935 Residence (City) | San Francisco |
| 1935 Residence (County) | San Francisco |
| Naturalization Status | Naturalized |
| Occupation | Blacksmith Helper |
| Industry | Shipyard |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1200 |
| Highest Grade | 7 |
| 1935 Residence | Same Place |
| Birth Country | England |
| Birthplace (normalized) | england |
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 William Johnston across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
William Johnston
Head · 1940 · age 54 · b. ~1886 · 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-t0627-00312-00377)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Laurene Wiard | 54 | Head | Office Clerk | South Dakota |
| 2 | Elva Wiard | 46 | Wife | Auditor | California |
| 3 | Virginia Wiard | 24 | Daughter | Companion To Invalid | California |
| 4 | Ellis Wiard | 17 | Son | — | California |
| 5 | John Maddux | 33 | Head | Accountant | Missouri |
| 6 | Erna Maddux | 29 | Wife | — | California |
| 7 | Daniel R March | 8 | Son | — | California |
| 8 | Paul I March | 6 | Son | — | California |
| 9 | William J. Johnston THIS PERSON | 54 | Head | Blacksmith Helper | England |
| 10 | Sadie Johnston | 45 | Wife | — | California |
| 11 | William J Johnston | 23 | Son | Blacksmith Helper | California |
| 12 | Margaret Johnston | 20 | Daughter | New Worker | California |
| 13 | Marguerite Solomon | 35 | Sister-in-law | Saleslady | California |
| 14 | James Jordon | 39 | Brother-in-law | Dry Dock Hand | California |
| 15 | Herman Koch | 42 | Head | Baker | Pennsylvania |
| 16 | Ethel Koch | 40 | Wife | Secretary-Bookkeeper | California |
| 17 | Eleanor Bohlman | 15 | Daughter | — | California |
| 18 | Mary Reynolds | 60 | Mother-in-law | — | California |
| 19 | Ellen Long | 88 | Grandmother-in-law | — | Northern Ireland |
| 20 | Max E Vowles | 50 | Head | Office Clerk | North Dakota |
| 21 | Mary Vowles | 47 | Wife | Office Clerk | Minnesota |
| 22 | Carmen Spring | 40 | Head | Office Clerk | California |
| 23 | La Verne Spring | 15 | Daughter | — | California |
| 24 | Marcia Demick | 39 | Head | Credit Investigator | California |
| 25 | Sharon Demick | 13 | Daughter | — | California |
| 26 | Carol Demick | 9 | Daughter | — | California |
| 27 | Frank Ferry | 58 | Father | Jobber | California |
| 28 | Florence Ferry | 55 | Mother | Saleslady | California |
| 29 | Edwin L. Bauer | 34 | Head | Salesman | California |
| 30 | Burleigh Bauer | 24 | Wife | — | California |
| 31 | Paula Bauer | 0 | Daughter | — | California |
| 32 | Elizabeth Strange | 56 | Head | Teacher | Missouri |
| 33 | Ida Strange | 54 | Sister | — | Missouri |
| 34 | Gottfried Kiessem | 64 | Head | — | Germany |
| 35 | Sibilla Kiessem | 60 | Wife | — | Germany |
| 36 | Paula C Ringressy | 50 | Head | Stenographer | California |
| 37 | Grace Ringressy | 30 | Daughter | Registered Music Teacher | California |
| 38 | Will Menaker | 51 | Head | Claim Clerk | New York |
| 39 | Pauline Menaker | 44 | Wife | Teacher | Nebraska |
| 40 | Martin Jr. Judnich | 34 | Head | Accountant | 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)