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Donald Williams — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Polk-County, Iowa
Our Model Tree links this Donald Williams across the 1930 and 1940 US Censuses in Polk-County, Iowa (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 9-person household.
Age 11
b. ~1929
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Polk-County, Iowa |
| Surname | Williams |
| Given Name | Donald M. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Elkhart Twp. |
| 1935 Residence (County) | Polk |
| Additional Details | |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Elkhart Twp |
| Est. Birth Year | ~1929 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Donald | Age | Birth yr |
|---|---|---|---|---|
| Betty Williams | Daughter | — | 14 | ~1926 |
| Juanita Williams | Daughter | — | 12 | ~1928 |
| Doris Williams | Daughter | — | 16 | ~1924 |
| Beverly Williams | Daughter | — | 13 | ~1927 |
| Shirley Williams | Daughter | — | 8 | ~1932 |
| L Williams | Head | — | 40 | ~1900 |
| Dean Williams | Son | — | 17 | ~1923 |
| Donald Williams | Son | — | 11 | ~1929 |
| Reatha Williams | Spouse | — | 38 | ~1902 |
Census Appearances
1930
Polk, Iowa
Son, age
Polk, Iowa · implied b. ~1930 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williams |
| Given Name | Donald |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Polk-County, Iowa
Son, age 11
Polk-County, Iowa · implied b. ~1929 — 9 household members
| Surname | Williams |
| Given Name | Donald M. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Elkhart Twp. |
| 1935 Residence (County) | Polk |
| Highest Grade | No 5 |
| 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 Donald Williams across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Donald Williams
Son · 1940 · age 11 · b. ~1929 · Iowa
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Sibling
Dean Williams
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Shirley Williams
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Beverly Williams
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Juanita Williams
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Betty Williams
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Doris Williams
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
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-t0627-01192-00518)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Orville M. Pence | 45 | Son | Farmer | Iowa |
| 2 | Earl Wartburgh | 42 | Head | Farmer | Iowa |
| 3 | Hazel Wartburgh | 40 | Wife | House Work | Iowa |
| 4 | Harold Wartburgh | 7 | Son | — | Iowa |
| 5 | Melvin Olinger | 26 | Lodger | Labor | Arkansas |
| 6 | Frank A. Auth | 28 | Head | Farmer | Iowa |
| 7 | Odessa M. Auth | 23 | Wife | House Work | Iowa |
| 8 | J. Edward Auth | 50 | Head | Farmer | Iowa |
| 9 | Hazel Auth | 48 | Wife | House Keeping | Iowa |
| 10 | Lester Albert Auth | 30 | Son | Farmer | Iowa |
| 11 | George D. Warrell | 26 | Head | Laborer | Iowa |
| 12 | Florence Warrell | 22 | Wife | House Keeping | Iowa |
| 13 | S. D. Ring | 44 | Head | Civil Engineer | Minnesota |
| 14 | Ethel Ring | 44 | Wife | House Keeping | Iowa |
| 15 | Don D. Ring | 6 | Son | — | Iowa |
| 16 | Roger Davies | 60 | Head | Farmer | Wales |
| 17 | Annie Davies | 59 | Wife | House Keeping | Wales |
| 18 | Edith Annie Davies | 35 | Daughter | House Keeping | Wales |
| 19 | Dale Myers | 24 | Head | Farmer | Iowa |
| 20 | Jane E. Myers | 22 | Wife | House Keeping | Iowa |
| 21 | E. J. Sandquist | 26 | Head | Farmer | Iowa |
| 22 | Lorraine Sandquist | 20 | Wife | House Keeping | Iowa |
| 23 | L. H. Williams | 40 | Head | Farmer | Illinois |
| 24 | Reatha J. Williams | 38 | Wife | House Keeping | Iowa |
| 25 | Dean L. Williams | 17 | Son | — | Iowa |
| 26 | Doris L. Williams | 16 | Daughter | — | Iowa |
| 27 | Betty Lou Williams | 14 | Daughter | — | Iowa |
| 28 | Beverly A. Williams | 13 | Daughter | — | Iowa |
| 29 | Juanita J. Williams | 12 | Daughter | — | Iowa |
| 30 | Donald M. Williams THIS PERSON | 11 | Son | — | Iowa |
| 31 | Shirley Lee Williams | 8 | Daughter | — | Iowa |
| 32 | Theodore Hudson | 24 | Head | Laborer | Indiana |
| 33 | Lois Hudson | 27 | Wife | House Keeping | Iowa |
| 34 | N. J. Thornwall | 58 | Head | Farmer | Indiana |
| 35 | Fannie E. Thornwall | 44 | Wife | House Keeping | Iowa |
| 36 | John N. Thornwall | 19 | Son | Farmer | Iowa |
| 37 | Janice Thornwall | 13 | Daughter | — | Iowa |
| 38 | Patricia E. Thornwall | 10 | Daughter | — | Iowa |
| 39 | Henry D. Thornwall | 51 | Head | Farmer | Iowa |
| 40 | Hazel E. Thornwall | 47 | Wife | House Keeping | Rhode Island |
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)