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William Barr — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Polk-County, Iowa
Our Model Tree links this William Barr across the 1930 and 1940 US Censuses in Polk-County, Iowa (XGBoost, ~Confirmed) — first a son (b.~1930), then head of a 6-person household.
Age 10
b. ~1930
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Polk-County, Iowa |
| Surname | Barr |
| Given Name | William E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines City |
| 1935 Residence (County) | Polk |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Des Moines City |
| Est. Birth Year | ~1930 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| William Barr | Son | — | 10 | ~1930 |
| James Barr | Head | — | 51 | ~1889 |
| Ada Barr | Spouse | — | 44 | ~1896 |
| James Barr | Son | — | 2 | ~1938 |
| Richard Barr | Son | — | 20 | ~1920 |
| Donald Barr | Son | — | 15 | ~1925 |
Census Appearances
1930
Polk, Iowa
Son, age 2
Polk, Iowa · implied b. ~1928 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Barr |
| Given Name | Willie |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | none |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Polk-County, Iowa
Son, age 10
Polk-County, Iowa · implied b. ~1930 — 6 household members
| Surname | Barr |
| Given Name | William E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Des Moines City |
| 1935 Residence (County) | Polk |
| Class of Worker | 0 |
| Highest Grade | No 4 |
| 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 William Barr across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Barr
Son · 1940 · age 10 · b. ~1930 · Iowa
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Sibling
Richard Barr
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Barr
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Barr
Sibling · 1940 · age 2
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-t0627-01196-00377)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Hannah Rodine | 48 | Mother | New Worker | Sweden |
| 2 | Donald Rodine | 9 | Brother | — | Iowa |
| 3 | Roy E. Clarkson | 44 | Head | Detective | Iowa |
| 4 | Martha M. Clarkson | 40 | Wife | — | Missouri |
| 5 | Dorothy E. Clark | 22 | Daughter | Stenographer | Iowa |
| 6 | Virgil H. Clark | 23 | Son-in-law | Butcher | Iowa |
| 7 | James H. Barr | 51 | Head | Laborer | Kansas |
| 8 | Ada G. Barr | 44 | Wife | — | Missouri |
| 9 | Richard O. Barr | 20 | Son | Laborer | Iowa |
| 10 | Donald H. Barr | 15 | Son | — | Iowa |
| 11 | William E. Barr THIS PERSON | 10 | Son | — | Iowa |
| 12 | James L. Barr | 2 | Son | — | Iowa |
| 13 | Ralph Wicker | 45 | Head | Bookkeeper | Iowa |
| 14 | Anna Q. Wicker | 42 | Wife | — | Iowa |
| 15 | John K. Anderson | 37 | Head | Welder | Sweden |
| 16 | Margaret P. Anderson | 36 | Wife | — | Iowa |
| 17 | Audrey L. Allbright | 10 | Daughter | — | Iowa |
| 18 | Herman Reinmund | 68 | Head | Owner-Manager | Illinois |
| 19 | Ollie M. Reinmund | 64 | Wife | Clerk | Indiana |
| 20 | Mathew J. Savage | 80 | Head | — | England |
| 21 | Catherine Savage | 83 | Wife | — | England |
| 22 | Michael E. Savage | 39 | Son | Manager | Iowa |
| 23 | George D. Lamb | 40 | Head | Assessor | Missouri |
| 24 | Frances M. Lamb | 33 | Wife | — | Iowa |
| 25 | George R. Lamb | 14 | Son | — | Iowa |
| 26 | Jean L. Lamb | 10 | Daughter | — | Iowa |
| 27 | Richard C. Lamb | 5 | Son | — | Iowa |
| 28 | Addie L. Brown | 28 | Head | — | Illinois |
| 29 | Hallie Ruttenbur | 46 | Daughter | Stenographer | Iowa |
| 30 | Mary G. Du Bois | 42 | Daughter | Laborer | Iowa |
| 31 | Sophie Nelson | 72 | Head | — | Sweden |
| 32 | Harvey A. Hamm | 61 | Head | Stationary Fireman | Illinois |
| 33 | Anna M. Hamm | 58 | Wife | — | Iowa |
| 34 | Eugene E. Hamm | 31 | Son | Traveling Salesman | S. Dakota |
| 35 | Charles E. Clapper | 33 | Head | Assistant Foreman | Ohio |
| 36 | Anna M. Clapper | 24 | Wife | — | Iowa |
| 37 | Jesse N. Jones | 65 | Head | — | Iowa |
| 38 | Burza E. Jones | 57 | Wife | Clerical & Research | Michigan |
| 39 | Marcel Donnelly | 18 | Head | Stenographer | Iowa |
| 40 | — | None | — | — | — |
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)