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Thomas Williams — 1940 US Census Record
Model Tree available1940 United States Federal Census · Polk-County, Iowa
Our Model Tree links this Thomas Williams across the 1920, 1930 and 1940 US Censuses in Polk-County, Iowa (XGBoost, ~Confirmed), with identified parents Howard & Howard — first a head (b.~1913), then head of a 4-person household.
Age 27
b. ~1913
Male
Head
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Polk-County, Iowa |
| Surname | Williams |
| Given Name | Thomas |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines City |
| 1935 Residence (County) | Polk |
| Additional Details | |
| Occupation | Laborer |
| Industry | Iowa Packing |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 1650 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Laborer |
| Township / Ward | Des Moines City |
| Est. Birth Year | ~1913 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Thomas | Age | Birth yr |
|---|---|---|---|---|
| Joan Williams | Daughter | — | 1 | ~1939 |
| Donna Williams | Daughter | — | 6 | ~1934 |
| Thomas Williams | Head | — | 27 | ~1913 |
| Pauline Williams | Spouse | — | 24 | ~1916 |
Census Appearances
1920
Polk, Iowa
Son, age 6
Polk, Iowa · implied b. ~1914 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williams |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Polk, Iowa
Son, age 16
Polk, Iowa · implied b. ~1914 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williams |
| Given Name | Thomas R. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Polk-County, Iowa
Head, age 27
Polk-County, Iowa · implied b. ~1913 — 4 household members
| Surname | Williams |
| Given Name | Thomas |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines City |
| 1935 Residence (County) | Polk |
| Occupation | Laborer |
| Industry | Iowa Packing |
| Class of Worker | PW |
| Hours Worked | 42 |
| Income (1939) | 1650 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 Thomas Williams across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Howard Williams (~0.92 confidence) and father Howard Williams (~0.92 confidence) and mother Margaret Williams (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Howard Williams
b. ~1881
Source father
● Household
· direct · ~0.92
Father
Howard Williams
b. ~1890
Source father
● Household
· direct · ~0.92
Mother
Margaret Williams
b. ~1894
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Thomas Williams
Head · 1940 · age 27 · b. ~1913 · Iowa
★ 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 — Polk-County, Iowa
Open full size
1940 US Federal Census — Polk-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01196-00882)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Bruce Sholes | 26 | Head | Fire Biller | Illinois |
| 42 | Edna Sholes | 22 | Wife | — | Iowa |
| 43 | Anna Wondra | 86 | Head | — | Germany |
| 44 | Thomas Williams THIS PERSON | 27 | Head | Laborer | Iowa |
| 45 | Pauline Williams | 24 | Wife | — | Iowa |
| 46 | Donna Mae Williams | 6 | Daughter | — | Iowa |
| 47 | Joan Williams | 1 | Daughter | — | Iowa |
| 48 | Doran Keel | 24 | Head | Laborer | Iowa |
| 49 | Jane Keel | 21 | Wife | — | Iowa |
| 50 | James Keel | 1 | Son | — | Iowa |
| 51 | John Gillum | 30 | Head | Produce Worker | Iowa |
| 52 | Pearl Gillum | 24 | Wife | Produce Worker | Iowa |
| 53 | Guy Gillum | 26 | Head | Coal Miner | Iowa |
| 54 | Goldie Gillum | 23 | Wife | — | Iowa |
| 55 | Guy Jr. Gillum | 7 | Son | — | Iowa |
| 56 | Ronald Gillum | 4 | Son | — | Iowa |
| 57 | Ann Marie Gillum | 2 | Daughter | — | Iowa |
| 58 | Steve Dennis | 56 | Head | Coal Miner | Iowa |
| 59 | Wesley Dennis | 25 | Son | Coal Miner | Iowa |
| 60 | Juanita Dennis | 19 | Daughter | Housework | Iowa |
| 61 | Steve Dennis | 16 | Son | — | Iowa |
| 62 | Arthur Dennis | 35 | Son | Coal Miner | Iowa |
| 63 | Algie Gibson | 25 | Brother-in-law | Cesspool Worker | Washington |
| 64 | Dorothy Gibson | 23 | Sister | — | Iowa |
| 65 | Bertha Ann Gibson | 5 | Daughter | — | Iowa |
| 66 | Raymond A. Gibson | 1 | Son | — | Iowa |
| 67 | Verle Martindale | 28 | Head | Foreman | Iowa |
| 68 | Opal Martindale | 21 | Wife | — | Missouri |
| 69 | Thomas Martindale | 1 | Son | — | Iowa |
| 70 | John Martindale | 0 | Son | — | Iowa |
| 71 | Andrew Klifritz | 38 | Head | Foreman | Iowa |
| 72 | Jeanette Klifritz | 28 | Wife | — | Iowa |
| 73 | Henry Klifritz | 76 | Father | — | Iowa |
| 74 | Charles Klifritz | 24 | Brother | — | Iowa |
| 75 | Forest Armintrout | 34 | Head | Carpenter | Iowa |
| 76 | Nora Armintrout | 25 | Wife | — | Iowa |
| 77 | Jerry Armintrout | 4 | Son | — | Iowa |
| 78 | Louise Wilson | 10 | Step-daughter | — | Iowa |
| 79 | Dean Wilson | 7 | Step-son | — | Iowa |
| 80 | Wilbur Pinegar | 37 | Head | Trucker | Iowa |
Pedigree Summary
Thomas
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)