CW
Clarence Williams — 1940 US Census Record
Model Tree available1940 United States Federal Census · Alameda-County, California
Our Model Tree links this Clarence Williams across the 1920, 1930 and 1940 US Censuses in Alameda-County, California (XGBoost, ~Confirmed), with identified parents Milton & Nellie — first a head (b.~1904), then head of a 3-person household.
Age 36
b. ~1904
Male
Head
Born: Kansas
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Alameda-County, California |
| Surname | Williams |
| Given Name | Clarence R. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Kansas |
| 1935 Residence (City) | Oakland city |
| 1935 Residence (County) | Alameda |
| Additional Details | |
| Occupation | electrician |
| Industry | electrical parts factory |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 314 |
| Highest Grade | H 1 |
| 1935 Residence | Same place |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
| Occupation | Electrician |
| Township / Ward | Oakland City |
| Est. Birth Year | ~1904 |
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 Clarence | Age | Birth yr |
|---|---|---|---|---|
| Shirley Williams | Daughter | — | 2 | ~1938 |
| Clarence Williams | Head | — | 36 | ~1904 |
| Iva Williams | Spouse | — | 30 | ~1910 |
Census Appearances
1920
Alameda, California
Son, age 15
Alameda, California · implied b. ~1905 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williams |
| Given Name | Clarence E |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Kansas |
| Father's Birthplace | Kansas |
| Mother's Birthplace | Kansas |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
1930
Alameda, California
Son, age 27
Alameda, California · implied b. ~1903 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williams |
| Given Name | Clarence R. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Divorced |
| Birthplace | Kansas |
| Age at First Marriage | 21 |
| Father's Birthplace | Kansas |
| Mother's Birthplace | Kansas |
| Occupation | Armature Winder |
| Industry | Electrical |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
1940
Alameda-County, California
Head, age 36
Alameda-County, California · implied b. ~1904 — 3 household members
| Surname | Williams |
| Given Name | Clarence R. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Kansas |
| 1935 Residence (City) | Oakland city |
| 1935 Residence (County) | Alameda |
| Occupation | electrician |
| Industry | electrical parts factory |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 314 |
| Highest Grade | H 1 |
| 1935 Residence | Same place |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
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 Clarence Williams across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Milton Williams (~0.92 confidence) and mother Nellie Williams (~0.92 confidence) and father Griffith Williams (~0.92 confidence) and mother Nellie Williams (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Milton Williams
b. ~1872
Source father
● Household
· direct · ~0.92
Mother
Nellie Williams
b. ~1874
Source mother
● Household
· direct · ~0.92
Father
Griffith Williams
b. ~1875
Source father
● Household
· direct · ~0.92
Mother
Nellie Williams
b. ~1879
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Clarence Williams
Head · 1940 · age 36 · b. ~1904 · 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 — Alameda-County, California
Open full size
1940 US Federal Census — Alameda-County, California
Page Contents
38 people indexed on this census page (nara:1940:m-t0627-00437-00418)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | William J. Spaulding | 22 | Son | Stock Clerk | Canada |
| 2 | Marion M. Spaulding | 14 | Daughter | — | California |
| 3 | Arnold G. Petre | 55 | Head | Fireman | Germany |
| 4 | Florence H. Petre | 65 | Wife | — | Ohio |
| 5 | George Mcmaide | 57 | Lodger | — | California |
| 6 | Pelagie M. Reed | 63 | Head | — | France |
| 7 | Raymond G. Reed | 22 | Son | Machinist | California |
| 8 | John Mackenzie | 51 | Head | — | Scotland |
| 9 | Alice O. Mackenzie | 60 | Wife | — | England |
| 11 | John Wald | 58 | Head | Foreman Machinist | Norway |
| 12 | Inga O. Wald | 57 | Wife | — | Norway |
| 13 | Willie H. Rinke | 38 | Head | Pressman | Germany |
| 14 | Emily Rinke | 31 | Wife | — | Texas |
| 15 | Clarence R. Williams THIS PERSON | 36 | Head | Electrician | Kansas |
| 16 | Iva F. Williams | 30 | Wife | Store Buyer | California |
| 17 | Shirley C. Williams | 2 | Daughter | — | California |
| 19 | Steve G. Apostolos | 47 | Head | Store Keeper | Greece |
| 20 | Geo. B. Parapahaniotes | 47 | Partner | Store Clerk | Greece |
| 21 | James G. Robinson | 39 | Head | Letter Carrier | California |
| 22 | Helen Robinson | 33 | Wife | — | California |
| 23 | Gladys G. Robinson | 16 | Daughter | — | California |
| 24 | Adelbert Fournier | 59 | Head | Machinist | Michigan |
| 25 | Mattie R. Fournier | 34 | Wife | Hair Dresser | Missouri |
| 26 | Norman D. Mcgregor | 36 | Head | Manager | Missouri |
| 27 | Pearl G. Mcgregor | 29 | Wife | — | Oregon |
| 28 | Jack K. Mcgregor | 2 | Son | — | California |
| 29 | Alfred G. Hansen | 48 | Head | Upholstery Cleaner | Norway |
| 30 | Mary E. Hansen | 37 | Wife | — | Canada |
| 31 | William Hansen | 9 | Son | — | Washington |
| 32 | Marie J. Hansen | 8 | Daughter | — | California |
| 33 | Mary B. Hansen | 6 | Daughter | — | California |
| 34 | Patricia J. Hansen | 4 | Daughter | — | California |
| 35 | Mary E. Gressman | 60 | Head | — | Canada |
| 36 | William F. Gressman | 37 | Son | Accountant | Canada |
| 37 | Robert C. Gressman | 21 | Son | Machinist | Canada |
| 38 | Freddie C. Gressman | 8 | Son | — | California |
| 39 | Frank Taylor | 43 | Head | House Painter | England |
| 40 | Bernice M. Taylor | 38 | Wife | — | Canada |
Pedigree Summary
Clarence
Gen 1 · 4 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)