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Emma Williams — 1940 US Census Record
Linked across censuses1940 United States Federal Census · San-Francisco-County, California
Our Model Tree links this Emma Williams across the 1920, 1930 and 1940 US Censuses in San-Francisco-County, California (XGBoost, ~Confirmed) — first a spouse (b.~1891), then head of a 3-person household.
Age 49
b. ~1891
Female
Spouse
Born: Colorado
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | San-Francisco-County, California |
| Surname | Williams |
| Given Name | Emma M |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Colorado |
| 1935 Residence (City) | San Francisco |
| 1935 Residence (County) | San Francisco |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 4 |
| 1935 Residence | Same Place |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Township / Ward | San Francisco |
| Est. Birth Year | ~1891 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Emma | Age | Birth yr |
|---|---|---|---|---|
| George Williams | Head | — | 53 | ~1887 |
| Louis Williams | Son | — | 20 | ~1920 |
| Emma Williams | Spouse | — | 49 | ~1891 |
Census Appearances
1920
San Francisco, …
Spouse, age 28
San Francisco, California · implied b. ~1892 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williams |
| Given Name | Emma M |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Colorado |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Colorado |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1930
San Francisco, …
Other, age 39
San Francisco, California · implied b. ~1891 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williams |
| Given Name | Emma G. |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Colorado |
| Age at First Marriage | 15 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | New Jersey |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1940
San-Francisco-County, California
Spouse, age 49
San-Francisco-County, California · implied b. ~1891 — 3 household members
| Surname | Williams |
| Given Name | Emma M |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Colorado |
| 1935 Residence (City) | San Francisco |
| 1935 Residence (County) | San Francisco |
| Income (1939) | 0 |
| Highest Grade | No 4 |
| 1935 Residence | Same Place |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
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 Emma Williams across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Emma Williams
Spouse · 1940 · age 49 · b. ~1891 · 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-t0627-00301-00058)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Rose S Kasper | 70 | Head | — | Australia |
| 2 | Umberto Venturi | 44 | Head | Box Maker | California |
| 3 | Anita D Venturi | 37 | Wife | — | California |
| 4 | Lorraine Venturi | 12 | Daughter | — | California |
| 5 | Joyce E Venturi | 6 | Daughter | — | California |
| 6 | Thomas A O'Brien | 71 | Head | Rope Maker | California |
| 7 | Anne D O'Brien | 56 | Wife | — | California |
| 8 | William F O'Brien | 24 | Son | Oiler | California |
| 9 | Anna Reich | 70 | Head | — | Germany |
| 10 | Henry Walters | 63 | Roomer | — | California |
| 11 | Kenneth A Huntington | 29 | Head | Storekeeper | Maine |
| 12 | Clara D Huntington | 26 | Wife | Manager Candy Store | Canada-Eng |
| 13 | Kenneth S Jr Huntington | 5 | Son | — | California |
| 14 | Euphrosine Bacher | 83 | Head | — | Switzerland |
| 15 | Rose E Bacher | 37 | Daughter | P.B.X. Operator | California |
| 16 | George E Williams | 53 | Head | Longshoreman | Pennsylvania |
| 17 | Emma M Williams THIS PERSON | 49 | Wife | — | Colorado |
| 18 | Louis D Williams | 20 | Son | Asst. Bookkeeper | California |
| 19 | Frank Masoli | 41 | Head | Laborer Warehouse | Italy |
| 20 | Evelyn R Masoli | 35 | Wife | — | Germany |
| 21 | Irma L Masoli | 11 | Daughter | — | California |
| 22 | Deanna D Masoli | 1 | Daughter | — | California |
| 23 | Leroy B. F. Sherman | 28 | Head | Building Carpenter | California |
| 24 | Desmaine Sherman | 25 | Wife | — | California |
| 25 | Thomas L Sherman | 4 | Son | — | California |
| 26 | Barbara L Sherman | 2 | Daughter | — | California |
| 27 | Antonio Biagini | 50 | Head | — | Italy |
| 28 | Orly A Biagini | 22 | Daughter | Seamstress | California |
| 29 | Ann Biagini | 22 | Daughter | Seamstress | California |
| 30 | Eva Biagini | 21 | Daughter | Packer | California |
| 31 | Emanuel Jr. Biagini | 12 | Son | — | California |
| 32 | Carol Matteucci | 79 | Mother | — | Italy |
| 33 | Louis Verdiia | 49 | Head | Structural Iron Worker | Italy |
| 34 | Mary Verdiia | 42 | Wife | Cook | Italy |
| 35 | Joseph Verdiia | 17 | Son | New Worker | California |
| 36 | Mario Verdiia | 14 | Son | — | California |
| 37 | Frank Massa | 58 | Lodger | — | Italy |
| 38 | George C Vovich | 58 | Head | Shipping Clerk | Australia |
| 39 | Catherine C Vovich | 53 | Wife | — | Australia |
| 40 | Florence C Vovich | 32 | Daughter | Bookkeeper | 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)