MW
Marie Williams — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Warren-County, Iowa
Our Model Tree links this Marie Williams across the 1930 and 1940 US Censuses in Warren-County, Iowa (XGBoost, ~Confirmed) — first a daughter (b.~1928), then head of a 7-person household.
Age 12
b. ~1928
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Warren-County, Iowa |
| Surname | Williams |
| Given Name | Marie E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Carlisle Town |
| 1935 Residence (County) | Warren |
| Additional Details | |
| Highest Grade | No 5 |
| 1935 Residence | Same Place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Carlisle Town |
| Est. Birth Year | ~1928 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Marie | Age | Birth yr |
|---|---|---|---|---|
| Eleanor Eiron | Daughter | — | — | |
| Mary Eiron | Daughter | — | 9 | ~1931 |
| Marie Williams | Daughter | — | 12 | ~1928 |
| George Williams | Head | — | 32 | ~1908 |
| Roy Williams | Son | — | 22 | ~1918 |
| Robert Eiron | Son | — | 7 | ~1933 |
| Beatrice Williams | Spouse | — | 39 | ~1901 |
Census Appearances
1930
Warren, Iowa
Daughter, age 2
Warren, Iowa · implied b. ~1928 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | William |
| Given Name | Marie |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Oklahoma |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Warren-County, Iowa
Daughter, age 12
Warren-County, Iowa · implied b. ~1928 — 7 household members
| Surname | Williams |
| Given Name | Marie E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Carlisle Town |
| 1935 Residence (County) | Warren |
| 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 Marie Williams across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Marie Williams
Daughter · 1940 · age 12 · b. ~1928 · Iowa
★ You are viewing this record
Sibling
Roy Williams
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eleanor Eiron
Sibling · 1940 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Eiron
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Eiron
Sibling · 1940 · age 9
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 — Warren-County, Iowa
Open full size
1940 US Federal Census — Warren-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01210-00013)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Milan Milan | 35 | Brother | Laborer | Iowa |
| 2 | Justin Ballard | 26 | Head | Mechanic | Iowa |
| 3 | Opal Ballard | 27 | Wife | — | Iowa |
| 4 | Robert Ballard | 2 | Son | — | Iowa |
| 5 | George Jones | 42 | Head | Signal Maintainer | Iowa |
| 6 | Laura Jones | 28 | Wife | — | Iowa |
| 7 | George Gene Jones | 9 | Son | — | Iowa |
| 8 | Jerry Jones | 6 | Son | — | Iowa |
| 9 | Everett Kaid | 44 | Head | Operator | Iowa |
| 10 | Rena Kaid | 48 | Wife | — | Indiana |
| 11 | William Kaid | 23 | Son | Laborer | Iowa |
| 12 | Phyllis Kaid | 17 | Daughter | — | Iowa |
| 13 | Frank Johnson | 58 | Head | Operator | Missouri |
| 14 | G. A. De Camp | 43 | Head | Mechanic | Iowa |
| 15 | Clara De Camp | 43 | Wife | — | Oklahoma |
| 16 | Dean Look | 21 | Stepson | Mechanic | Iowa |
| 17 | Virginia Look | 18 | Stepdaughter | — | Iowa |
| 18 | Carl Look | 14 | Stepson | — | Iowa |
| 19 | George Williams | 32 | Head | — | Iowa |
| 20 | Beatrice Williams | 39 | Wife | Operator | Oklahoma |
| 21 | Roy Williams | 22 | Son | — | Iowa |
| 22 | Marie E. Williams THIS PERSON | 12 | Daughter | — | Iowa |
| 23 | Eleanor Eiron | None | Daughter | — | — |
| 24 | Mary Eiron | 9 | Daughter | — | Iowa |
| 25 | Robert Eiron | 7 | Son | — | Iowa |
| 26 | Earl Ridgway | 37 | Head | Owner Operator | Iowa |
| 27 | Cleo Ridgway | 31 | Wife | — | Iowa |
| 28 | Lloyd Shields | 64 | Head | Owner Operator | Iowa |
| 29 | Grace Shields | 26 | Daughter | Owner Operator | Iowa |
| 30 | Stewart Sawdey | 31 | Head | Dentist | Iowa |
| 31 | Grace V. Sawdey | 24 | Wife | — | Iowa |
| 32 | Sheila Ann Sawdey | 1 | Daughter | — | Iowa |
| 33 | Charles E. Johnson | 53 | Head | Owner Operator | Iowa |
| 34 | Lulu M. Johnson | 51 | Wife | — | Iowa |
| 35 | Mable Johnson | 15 | Daughter | Book Work | Iowa |
| 36 | Eva Rogers | 44 | Head | House Work | Iowa |
| 37 | Georgia Rogers | 21 | Daughter | — | Iowa |
| 38 | Wayne Rogers | 20 | Son | Farm | Iowa |
| 39 | Doris Rogers | 14 | Daughter | — | Iowa |
| 40 | Junior Rogers | 12 | Son | — | Iowa |
Related Census Records
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)