JW
John Williams — 1940 US Census Record
Model Tree available1940 United States Federal Census · Salt-Lake-County, Utah
Our Model Tree links this John Williams across the 1910, 1920, 1930 and 1940 US Censuses in Salt-Lake-County, Utah (XGBoost, ~Confirmed), with identified parents Bruce & Anne — first a son (b.~1900), then head of a 2-person household.
Age 40
b. ~1900
Male
Son
Born: Utah
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Salt-Lake-County, Utah |
| Surname | Williams |
| Given Name | John G. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Single |
| Birthplace | Utah |
| 1935 Residence (City) | Salt Lake City |
| 1935 Residence (County) | Salt Lake |
| Additional Details | |
| Industry | 0 |
| Highest Grade | 0 |
| 1935 Residence | Same House |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
| Township / Ward | Salt Lake City |
| Est. Birth Year | ~1900 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Anne Williams | Head | — | 80 | ~1860 |
| John Williams | Son | — | 40 | ~1900 |
Census Appearances
1910
Salt Lake, …
Son, age 10
Salt Lake, Utah · implied b. ~1900 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williams |
| Given Name | John G. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Utah |
| Father's Birthplace | Wales |
| Mother's Birthplace | Utah |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
1920
Salt Lake, …
Son, age 20
Salt Lake, Utah · implied b. ~1900 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williams |
| Given Name | John G |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Utah |
| Father's Birthplace | Wales |
| Mother's Birthplace | Utah |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
1930
Salt Lake, …
Son, age 30
Salt Lake, Utah · implied b. ~1900 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williams |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | Utah |
| Father's Birthplace | Wales |
| Mother's Birthplace | Utah |
| Occupation | Janitor Helper |
| Industry | Public school |
| Class of Worker | W |
| Can Read/Write | No |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
1940
Salt-Lake-County, Utah
Son, age 40
Salt-Lake-County, Utah · implied b. ~1900 — 2 household members
| Surname | Williams |
| Given Name | John G. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 40 |
| Marital Status | Single |
| Birthplace | Utah |
| 1935 Residence (City) | Salt Lake City |
| 1935 Residence (County) | Salt Lake |
| Industry | 0 |
| Highest Grade | 0 |
| 1935 Residence | Same House |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
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 John Williams across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Bruce Williams (~0.92 confidence) and mother Anne Williams (~0.92 confidence) and mother Anna Williams (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Bruce Williams
b. ~1860
Source father
● Household
· direct · ~0.92
Mother
Anne Williams
b. ~1860
Source mother
● Household
· direct · ~0.92
Mother
Anna Williams
b. ~1860
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Williams
Son · 1940 · age 40 · b. ~1900 · Utah
★ 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 — Salt-Lake-County, Utah
Open full size
1940 US Federal Census — Salt-Lake-County, Utah
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-04226-00167)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Marjorie Powell | 17 | daughter | — | Utah |
| 2 | Darlene Powell | 10 | daughter | — | Utah |
| 4 | Charles O. Bills | 53 | Head | Wheel Roller | Utah |
| 5 | Lena Bills | 49 | Wife | — | Utah |
| 6 | Jack Bills | 13 | Son | — | Utah |
| 7 | Dick Bills | 10 | Son | — | Utah |
| 8 | William S. Hill | 54 | Head | Laborer | Utah |
| 9 | Fannie Hill | 47 | Wife | — | Arizona |
| 10 | Cora Hill | 20 | daughter | Stenographer | Utah |
| 11 | La Mar Hill | 19 | daughter | New Worker | Utah |
| 12 | Norman Hill | 17 | Son | — | Utah |
| 13 | Shirley Hill | 13 | daughter | — | Utah |
| 14 | Paul Hill | 8 | Son | — | Utah |
| 15 | Neil Hill | 1 | Son | — | Utah |
| 16 | Luke H. Wahlquist | 32 | Head | Chief Engineer | Utah |
| 17 | Elvae Wahlquist | 33 | Wife | — | Utah |
| 18 | Renee S. Wahlquist | 3 | daughter | — | Utah |
| 19 | Ronald Coleman | 26 | Head | Ware House Man | England |
| 20 | Luella Coleman | 25 | Wife | — | Utah |
| 21 | Shirley Coleman | 4 | daughter | — | Utah |
| 22 | Carole Coleman | 2 | daughter | — | Utah |
| 23 | Anne R. Williams | 80 | Head | — | Utah |
| 24 | John G. Williams THIS PERSON | 40 | Son | — | Utah |
| 25 | Robert Bridge | 68 | Head | Sheet Metal Worker | Utah |
| 26 | Janet Bridge | 61 | Wife | — | Utah |
| 27 | Pearl L. Bridge | 32 | daughter | Stenographer | Utah |
| 28 | Hilton M. Mcculloch | 41 | Head | Boiler Maker Helper | Wyoming |
| 29 | Virginia Mcculloch | 38 | Wife | Seamstress | Idaho |
| 30 | Clair Mcculloch | 16 | Son | — | Utah |
| 31 | Helen Mcculloch | 12 | Son | — | Utah |
| 32 | Louis Mcculloch | 6 | Son | — | Utah |
| 33 | Leo Loya | 32 | Head | Farm-Hand | New Mexico |
| 34 | Therasa Loya | 28 | Wife | — | Colorado |
| 35 | Leo Jr. Loya | 9 | Son | — | Idaho |
| 36 | Virginia Loya | 8 | daughter | — | Utah |
| 37 | Glena Loya | 6 | daughter | — | Idaho |
| 38 | Paul Loya | 5 | Son | — | Utah |
| 39 | Abraham Clayton | 55 | Head | Shop Foreman | Utah |
| 40 | Ella Clayton | 53 | Wife | — | Utah |
Pedigree Summary
John
Gen 1 · 3 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)