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Mary Mcclain — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Peoria-County, Illinois
Our Model Tree links this Mary Mcclain across the 1930 and 1940 US Censuses in Peoria-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1926), then head of a 7-person household.
Age 14
b. ~1926
Female
Daughter
Born: Indiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Peoria-County, Illinois |
| Surname | McClain |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Peoria City |
| 1935 Residence (County) | Peoria |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Township / Ward | Peoria City |
| Est. Birth Year | ~1926 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Zella Mcclain | Spouse | — | 34 | ~1906 |
| Dale Mcclain | Head | — | 37 | ~1903 |
| Martha Mcclain | Daughter | — | 16 | ~1924 |
| Mary Mcclain | Daughter | — | 14 | ~1926 |
| Phyllis Mcclain | Daughter | — | 12 | ~1928 |
| Dale Mcclain | Son | — | 8 | ~1932 |
| Richard Mcclain | Son | — | 10 | ~1930 |
Census Appearances
1930
Peoria, Illinois
Daughter, age 4
Peoria, Illinois · implied b. ~1926 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McClain |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Pennsylvania |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Peoria-County, Illinois
Daughter, age 14
Peoria-County, Illinois · implied b. ~1926 — 7 household members
| Surname | McClain |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Peoria City |
| 1935 Residence (County) | Peoria |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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 Mcclain across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Mcclain
Daughter · 1940 · age 14 · b. ~1926 · Illinois
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Sibling
Martha Mcclain
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Mcclain
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Phyllis Mcclain
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dale Mcclain
Sibling · 1940 · age 8
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 — Peoria-County, Illinois
Open full size
1940 US Federal Census — Peoria-County, Illinois
Page Contents
37 people indexed on this census page (nara:1940:m-t0627-00919-00197)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 2 | Agnes A Andres | 50 | Head | Janitress | Illinois |
| 3 | Richard Leonat|Leonard | 80 | Father | — | Kentucky |
| 5 | Theodore Bidleman | 36 | Head | Truck Driver | Iowa |
| 6 | Helena Bidleman | 22 | Wife | — | Illinois |
| 7 | Josephine Bidleman | 1 | Daughter | — | Illinois |
| 8 | Joseph Bidleman | 1 | Son | — | Illinois |
| 9 | Dale Mcclain | 37 | Head | Machinist | Indiana |
| 10 | Zella Mcclain | 34 | Wife | — | Pennsylvania |
| 11 | Martha Mcclain | 16 | Daughter | — | Indiana |
| 12 | Mary Mcclain THIS PERSON | 14 | Daughter | — | Indiana |
| 13 | Phyllis Mcclain | 12 | Daughter | — | Indiana |
| 14 | Richard Mcclain | 10 | Son | — | Indiana |
| 15 | Dale Jr Mcclain | 8 | Son | — | Illinois |
| 16 | Rudol Burrell | 27 | Head | Assistant Foreman | Illinois |
| 17 | Annabell Burrell | 23 | Wife | — | Illinois |
| 18 | Fredie Burrell | 1 | Son | — | Illinois |
| 19 | William Hilty | 50 | Head | Machinist | Illinois |
| 20 | Le Matty|Le Matta Hilty | 16 | Daughter | Housework | Illinois |
| 21 | Clara Limbow | 55 | Head | — | Illinois |
| 22 | Emil Limbow | 48 | Brother | Clerk | Illinois |
| 23 | Agnes Limbow | 37 | Sister | Comptometer | Illinois |
| 24 | Herbert Hertron|Hertron | 50 | Brother-in-law | Distiller | California |
| 25 | Norma Hertron|Hertron | 41 | Sister | — | Illinois |
| 27 | Jess Rigg | 37 | Head | Machinist | Illinois |
| 28 | Bessie Rigg | 32 | Wife | — | Illinois |
| 29 | Gladys Rigg | 18 | Daughter | — | Illinois |
| 30 | Glady Rigg | 13 | Daughter | — | Illinois |
| 31 | William Buselmeier | 32 | Head | Enameler | Illinois |
| 32 | Madine Buselmeier | 20 | Wife | — | Illinois |
| 33 | Walter Clark | 27 | Head | Bottler | Illinois |
| 34 | Ruth Clark | 26 | Wife | — | Illinois |
| 35 | Katherine Reinhardt | 43 | Head | Bookkeeper | Illinois |
| 36 | Lucy Turner | 60 | Lodger | — | Illinois |
| 37 | Flossie Crouse | 38 | Head | Assistant Manager | Illinois |
| 38 | Raymond Crouse | 41 | Brother | Labor | Illinois |
| 39 | Leo Clark | 40 | Head | Engineer | Illinois |
| 40 | Goldie Clark | 37 | Wife | — | Illinois |
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)