MW
Mary Williams — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Mahaska, Iowa
Our Model Tree links this Mary Williams across the 1900, 1910 and 1920 US Censuses in Mahaska, Iowa (XGBoost, ~Confirmed) — first a spouse (b.~1864), then head of a 3-person household.
Age 56
b. ~1864
Female
Spouse
Born: Iowa
Married
1920 Census Record Details
| Census Year | 1920 |
| Location | Mahaska, Iowa |
| Surname | Williams |
| Given Name | Mary |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 56 |
| Marital Status | Married |
| Birthplace | Iowa |
| Father's Birthplace | Wales |
| Mother's Birthplace | Wales |
| Additional Details | |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Union Township |
| Est. Birth Year | ~1864 |
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.
3 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Evan Williams | Head | — | 56 | ~1864 |
| William Williams | Son | — | 21 | ~1899 |
| Mary Williams | Spouse | — | 56 | ~1864 |
Census Appearances
1900
Mahaska, Iowa
Spouse, age 35
Mahaska, Iowa · implied b. ~1865 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williams |
| Given Name | Mary A. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Iowa |
| Birth Month | July |
| Birth Year | 1865 |
| Father's Birthplace | Wales |
| Mother's Birthplace | Wales |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1910
Mahaska, Iowa
Spouse, age 46
Mahaska, Iowa · implied b. ~1864 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williams |
| Given Name | Mary A |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 46 |
| Marital Status | Married |
| Birthplace | Iowa |
| Years Married | 20 |
| Children Born | 3 |
| Children Living | 3 |
| Father's Birthplace | Wales |
| Mother's Birthplace | Wales |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1920
Mahaska, Iowa
Spouse, age 56
Mahaska, Iowa · implied b. ~1864 — 3 household members
| Surname | Williams |
| Given Name | Mary |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 56 |
| Marital Status | Married |
| Birthplace | Iowa |
| Father's Birthplace | Wales |
| Mother's Birthplace | Wales |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| 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 Mary Williams across 3 US Census years (1900, 1910 and 1920) in Mahaska, Iowa, using XGBoost record linkage.
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This person
Anchor record
Mary Williams
Spouse · 1920 · age 56 · b. ~1864 · Iowa
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1920 US Federal Census — Mahaska, Iowa
Open full size
1920 US Federal Census — Mahaska, Iowa
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu501unit:0519)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ralph Maudlin | 1 | son | — | Iowa |
| 2 | George Robertson | 60 | Head | Farmer | Kentucky |
| 3 | Ida Robertson | 58 | wife | — | Pennsylvania |
| 4 | Ina Robertson | 32 | daughter | — | Iowa |
| 5 | Ella Robertson | 26 | daughter | — | Iowa |
| 6 | Fern Robertson | 19 | daughter | — | Iowa |
| 7 | Earl Robertson | 18 | son | — | Iowa |
| 8 | Lula Robertson | 16 | daughter | — | Iowa |
| 9 | William L. Mcniff | 62 | Head | Farmer | Iowa |
| 10 | Elizabeth Mcniff | 58 | wife | — | Wales |
| 11 | Chase Mcniff | 29 | son | Farmer | Iowa |
| 12 | Edward Speas | 23 | Head | Farmer | Iowa |
| 13 | Inza Speas | 23 | wife | — | Iowa |
| 14 | Vivian Louise Speas | 0 | daughter | — | Iowa |
| 15 | Stephen Robertson | 71 | Head | Farmer | Indiana |
| 16 | Harriett Robertson | 64 | wife | — | New Jersey |
| 17 | Allen J. Wheeler | 47 | Head | Farmer | Maryland |
| 18 | Grace B. Wheeler | 47 | wife | — | Iowa |
| 19 | Samuel Wheeler | 17 | son | — | Iowa |
| 20 | Iva Wheeler | 15 | daughter | — | Iowa |
| 21 | Dorotha Wheeler | 7 | daughter | — | Iowa |
| 22 | Ulysses Stephens | 39 | Head | Farmer | Ohio |
| 23 | Edna Stephens | 35 | wife | — | Virginia |
| 24 | Nellie Stephens | 11 | daughter | — | Ohio |
| 25 | Evan F. Williams | 56 | Head | Farmer | Wales |
| 26 | Mary Williams THIS PERSON | 56 | wife | — | Iowa |
| 27 | William Earl Williams | 21 | son | — | Iowa |
| 28 | Ralph Stephen | 31 | Head | Farm Laborer | Ohio |
| 29 | Carrie Stephen | 23 | wife | — | Iowa |
| 30 | Robert Stephen | 5 | son | — | Iowa |
| 31 | Marion Stephen | 4 | son | — | Iowa |
| 32 | Goldie Stephen | 2 | daughter | — | Iowa |
| 33 | Earl Addison | 32 | Head | Farmer | Iowa |
| 34 | Clara Addison | 28 | wife | — | Iowa |
| 35 | Morris Addison | 4 | son | — | Iowa |
| 36 | Ellen Addison | 6 | daughter | — | Iowa |
| 37 | Madge Addison | 1 | daughter | — | Iowa |
| 38 | Francis Reese | 37 | Head | Farmer | Iowa |
| 39 | Lillian Reese | 35 | wife | — | Iowa |
| 40 | David Reese | 12 | son | — | Iowa |
| 41 | Viola Reese | 6 | daughter | — | Iowa |
| 42 | Mike Whitehead | 39 | Head | Farmer | Iowa |
| 43 | Elizabeth Whitehead | 34 | wife | — | Iowa |
| 44 | Bernice Whitehead | 16 | daughter | — | Iowa |
| 45 | Mildred Whitehead | 14 | daughter | — | Iowa |
| 46 | Max Whitehead | 10 | son | — | Iowa |
| 47 | Kenneth Whitehead | 7 | son | — | Iowa |
| 48 | Fred Hyett | 40 | Head | Farmer | Ohio |
| 49 | Florence Hyett | 43 | wife | — | Ohio |
| 50 | Emma Hyett | 21 | daughter | Housework | Iowa |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 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)