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Mary Mcclain — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Page-County, Iowa
Our Model Tree links this Mary Mcclain across the 1930 and 1940 US Censuses in Page-County, Iowa (XGBoost, ~Confirmed) — first a daughter (b.~1925), then head of a 7-person household.
Age 15
b. ~1925
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Page-County, Iowa |
| Surname | McClain |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Amity Township |
| 1935 Residence (County) | Page |
| Additional Details | |
| Industry | none |
| Hours Worked | 6 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Amity Township |
| Est. Birth Year | ~1925 |
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 |
|---|---|---|---|---|
| Loyd Mcclain | Son | — | 20 | ~1920 |
| Nevin Mcclain | Son | — | 24 | ~1916 |
| Nell Mcclain | Spouse | — | 52 | ~1888 |
| Joan Mcclain | Daughter | — | 13 | ~1927 |
| Clark Mcclain | Head | — | 54 | ~1886 |
| Mary Mcclain | Daughter | — | 15 | ~1925 |
| Margaret Mcclain | Other | — | 85 | ~1855 |
Census Appearances
1930
Page, Iowa
Daughter, age 5
Page, Iowa · implied b. ~1925 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McLean |
| Given Name | Mary A. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Missouri |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Page-County, Iowa
Daughter, age 15
Page-County, Iowa · implied b. ~1925 — 7 household members
| Surname | McClain |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Amity Township |
| 1935 Residence (County) | Page |
| Industry | none |
| Hours Worked | 6 |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 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 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 15 · b. ~1925 · Iowa
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Sibling
Nevin Mcclain
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joan Mcclain
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Loyd Mcclain
Sibling · 1940 · age 20
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 — Page-County, Iowa
Open full size
1940 US Federal Census — Page-County, Iowa
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01188-00038)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Genevia Johnson | 22 | Wife | Housewife | Iowa |
| 43 | J. L. Barnett | 74 | Head | Farmer | Ohio |
| 44 | L. J. Barnett | 49 | Son | Farmer | Missouri |
| 45 | Arthur Barnett | 46 | Son | Farmer | Missouri |
| 46 | May Barnett | 41 | Daughter | Housework | Missouri |
| 47 | Elmer White | 39 | Head | 72 | Iowa |
| 48 | Mary White | 41 | Wife | — | Missouri |
| 49 | Roger White | 16 | Son | 5 | Nebraska |
| 50 | Lois White | 14 | Daughter | 6 | Nebraska |
| 51 | Everett Fouch | 40 | Head | Farmer | Missouri |
| 52 | Harriet Fouch | 47 | Wife | Housewife | Iowa |
| 53 | Wilford Orr | 85 | Head | — | Nebraska |
| 54 | Margaret Frost | 66 | Mother in law | Housewife | Iowa |
| 55 | Watson Louch | 85 | Son | — | Iowa |
| 56 | Clark Mcclain | 54 | Head | Farmer | Iowa |
| 57 | Nell Mcclain | 52 | Wife | Housewife | Iowa |
| 58 | Nevin Mcclain | 24 | Son | Farmer | Iowa |
| 59 | Loyd Mcclain | 20 | Son | — | Iowa |
| 60 | Mary Mcclain THIS PERSON | 15 | Daughter | — | Iowa |
| 61 | Joan Mcclain | 13 | Daughter | — | Iowa |
| 62 | Margaret Mcclain | 85 | Mother | — | Ireland |
| 63 | Samuel Mcafee | 70 | Head | Farmer | Iowa |
| 64 | Elizabeth Mcafee | 73 | Sister | Housework | Iowa |
| 65 | Mattie Black | 46 | Cousin | Housework | Iowa |
| 66 | William Larabee | 51 | Head | Farmer | Kansas |
| 67 | Myrtle Larabee | 54 | Wife | Housewife | Missouri |
| 68 | Dale Larabee | 15 | Son | — | South Dakota |
| 69 | Margaret Larabee | 13 | Daughter | — | South Dakota |
| 70 | George Cromer | 38 | Head | Farmer | Minnesota |
| 71 | Margaret Cromer | 34 | Wife | Housewife | Colorado |
| 72 | Betty Jo Cromer | 7 | Daughter | — | Missouri |
| 73 | Lester Mcmichael | 48 | Head | Farmer | Iowa |
| 74 | Grace Mcmichael | 49 | Wife | Housewife | Iowa |
| 75 | Richard Mcmichael | 65 | Head | Farmer | Iowa |
| 76 | Ethel Mcmichael | 60 | Sister | Housework | Iowa |
| 77 | Merrell Welch | 24 | Head | Farmer | Iowa |
| 78 | Joy Welch | 18 | Wife | Housewife | Iowa |
| 79 | William Cunningham | 57 | Head | Farmer | Scotland |
| 80 | Jean Cunningham | 64 | Wife | Housewife | Iowa |
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)