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Mary Arnold — 1940 US Census Record
Model Tree available1940 United States Federal Census · Wabash-County, Illinois
Our Model Tree links this Mary Arnold across the 1920, 1930 and 1940 US Censuses in Wabash-County, Illinois (XGBoost, ~Confirmed), with identified parents Charles & Harriett — first a daughter (b.~1917), then head of a 4-person household.
Age 23
b. ~1917
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Wabash-County, Illinois |
| Surname | Arnold |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Wabash |
| Additional Details | |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Mount Carmel |
| Est. Birth Year | ~1917 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Arnold | Daughter | — | 23 | ~1917 |
| Ethel Arnold | Head | — | 52 | ~1888 |
| Robert Arnold | Son | — | 11 | ~1929 |
| William Arnold | Son | — | 19 | ~1921 |
Census Appearances
1920
Wabash, Illinois
Daughter, age 2
Wabash, Illinois · implied b. ~1918 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Arnold |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Wabash, Illinois
Daughter, age 13
Wabash, Illinois · implied b. ~1917 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Arnold |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Wabash-County, Illinois
Daughter, age 23
Wabash-County, Illinois · implied b. ~1917 — 4 household members
| Surname | Arnold |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Wabash |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Arnold across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Charles Arnold (~0.92 confidence) and mother Harriett Arnold (~0.92 confidence) and mother Ethel Arnold (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Charles Arnold
b. ~1886
Source father
● Household
· direct · ~0.92
Mother
Harriett Arnold
b. ~1888
Source mother
● Household
· direct · ~0.92
Mother
Ethel Arnold
b. ~1888
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Arnold
Daughter · 1940 · age 23 · b. ~1917 · Illinois
★ You are viewing this record
Sibling
Robert Arnold
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Arnold
Sibling · 1940 · age 19
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 — Wabash-County, Illinois
Open full size
1940 US Federal Census — Wabash-County, Illinois
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-00900-00236)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Goldie Moyer | 55 | Wife | — | Missouri |
| 42 | Mary Ellen Moyer | 26 | Daughter | Grade Teacher | Illinois |
| 43 | Clan Neeley | 63 | Head | Carpenter | Indiana |
| 44 | Geneva D. Neeley | 62 | Wife | — | Indiana |
| 45 | James Strock | 64 | Head | Electrician | Illinois |
| 46 | Esther Strock | 64 | Wife | — | Illinois |
| 47 | Mary Strock | 40 | Daughter | Office Clerk | Illinois |
| 48 | Dwight Wheelhouse | 66 | Head | Engineer | Illinois |
| 49 | Bessie Wheelhouse | 67 | Wife | — | Illinois |
| 50 | Harold Wheelhouse | 34 | Son | Bartender | Illinois |
| 51 | Ethel D. Arnold | 52 | Head | — | Illinois |
| 52 | Mary Arnold THIS PERSON | 23 | Daughter | — | Illinois |
| 53 | William Arnold | 19 | Son | Maister | Illinois |
| 54 | Robert Arnold | 11 | Son | — | Illinois |
| 55 | Wade Hampton Abdell | 56 | Head | Conductor | Kentucky |
| 56 | Martha V. Abdell | 54 | Wife | — | Illinois |
| 57 | Harry Abdell | 15 | Son | — | Indiana |
| 58 | Morris Basinger | 45 | Head | Farmer | Illinois |
| 59 | Violet D. Basinger | 39 | Wife | — | Illinois |
| 60 | Mary C. Fleming | 76 | Head | — | Illinois |
| 61 | Mary C. D. Buckholz | 78 | Head | — | Illinois |
| 62 | Marshal G. Kerr | 65 | Brother | — | Illinois |
| 63 | Bertha Gould | 59 | Housekeeper | Housekeeper | Illinois |
| 64 | Wilbur Primush | 80 | Head | — | Illinois |
| 65 | Gertrude Primush | 65 | Wife | — | Illinois |
| 66 | Harold Primush | 40 | Son | Assistant Agent | Illinois |
| 67 | Wilbur D. Primush | 31 | Son | Linotype Operator | Illinois |
| 68 | Gussie Robbie | 51 | Head | Engineer | Illinois |
| 69 | Robbie Robbie | 48 | Wife | — | Illinois |
| 70 | Virginia (Ab) Robbie | 21 | Daughter | — | Illinois |
| 71 | Donald Robbie | 20 | Son | — | Illinois |
| 72 | Lockie La Rue | 83 | Mother-in-law | — | Illinois |
| 73 | Clarence Stein | 65 | Head | Proprietor | Illinois |
| 74 | Eva D. Stein | 57 | Wife | — | Indiana |
| 75 | Robert Stein | 22 | Son | Bookkeeper | Illinois |
| 76 | Frances (Ab) Stein | 20 | Daughter | — | Illinois |
| 77 | Carl D. Blackwell | 32 | Head | Printer | Illinois |
| 78 | Valeria Blackwell | 28 | Wife | — | Illinois |
| 79 | Billy Blackwell | 10 | Son | — | Illinois |
Pedigree Summary
Mary + 2 siblings
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)