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Mary Mcclain — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Blair-County, Pennsylvania
Our Model Tree links this Mary Mcclain across the 1930 and 1940 US Censuses in Blair-County, Pennsylvania (XGBoost, ~Confirmed) — first a daughter (b.~1913), then head of a 6-person household.
Age 27
b. ~1913
Female
Daughter
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Blair-County, Pennsylvania |
| Surname | McClain |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Hollidaysburg borough |
| 1935 Residence (County) | Blair |
| Additional Details | |
| Occupation | Assistant Nursing |
| Industry | Private |
| Class of Worker | PW |
| Hours Worked | 56 |
| Income (1939) | 369 |
| Highest Grade | C 1 |
| 1935 Residence | Same House |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Assistant Nursing |
| Township / Ward | Hollidaysburg Borough |
| Est. Birth Year | ~1913 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Elvin Harkness | Head | — | 28 | ~1912 |
| Howard Harkness | Son | — | 2 | ~1938 |
| Dorothy Harkness | Spouse | — | 26 | ~1914 |
| Mary Mcclain | Spouse | — | 65 | ~1875 |
| Mary Mcclain | Daughter | — | 27 | ~1913 |
| Frank Mcclain | Son | — | 21 | ~1919 |
Census Appearances
1930
Blair, Pennsylvania
Daughter, age 16
Blair, Pennsylvania · implied b. ~1914 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McClain |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Blair-County, Pennsylvania
Daughter, age 27
Blair-County, Pennsylvania · implied b. ~1913 — 6 household members
| Surname | McClain |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Hollidaysburg borough |
| 1935 Residence (County) | Blair |
| Occupation | Assistant Nursing |
| Industry | Private |
| Class of Worker | PW |
| Hours Worked | 56 |
| Income (1939) | 369 |
| Highest Grade | C 1 |
| 1935 Residence | Same House |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 27 · b. ~1913 · Pennsylvania
★ You are viewing this record
Sibling
Howard Harkness
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frank Mcclain
Sibling · 1940 · age 21
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 — Blair-County, Pennsylvania
Open full size
1940 US Federal Census — Blair-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03440-00739)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Clare Gorsuch | 19 | Daughter | New Worker | Pennsylvania |
| 2 | Margaret Gorsuch | 59 | Daughter | — | Pennsylvania |
| 3 | Sammy Smith | 5 | Grand-son | — | Pennsylvania |
| 4 | Edgar D. Gorsuch | 39 | Head | Car Repair | Pennsylvania |
| 5 | Madeline Gorsuch | 36 | Wife | — | Pennsylvania |
| 6 | Barbara Gorsuch | 8 | Daughter | — | Pennsylvania |
| 7 | Joy Ann Gorsuch | 1 | Daughter | — | Pennsylvania |
| 8 | Elvin E. Harkness | 28 | Head | District Manager | Pennsylvania |
| 9 | Dorothy O. Harkness | 26 | Wife | — | Pennsylvania |
| 10 | Howard Harkness | 2 | Son | — | Pennsylvania |
| 11 | Mary Mcclain | 65 | Wife | — | Pennsylvania |
| 12 | Mary Mcclain THIS PERSON | 27 | Daughter | Assistant Nursing | Pennsylvania |
| 13 | Frank Mcclain | 21 | Son | Truck Driver | Pennsylvania |
| 14 | James Confer | 47 | Head | Labor | Pennsylvania |
| 15 | Almeda Confer | 48 | Wife | — | Pennsylvania |
| 16 | Robert Confer | 17 | Son | — | Pennsylvania |
| 17 | Jeanne Confer | 13 | Daughter | — | Pennsylvania |
| 18 | Ottaway Grando | 53 | Head | Chiropodist | Virginia |
| 19 | Cathryn Grando | 52 | Wife | — | Virginia |
| 20 | Elmer Alex | 65 | Head | — | Missouri |
| 21 | Emma Alex | 64 | Wife | — | Pennsylvania |
| 22 | Carl Marchiati | 47 | Head | Manager | Pennsylvania |
| 23 | Helen Marchiati | 42 | Wife | — | Ohio |
| 24 | Richard Marchiati | 14 | Son | — | Maryland |
| 25 | Thomas Marchiati | 11 | Son | — | Maryland |
| 26 | Harry Sheff | 39 | Head | District Superintendent | Pennsylvania |
| 27 | Helen Sheff | 36 | Wife | — | Pennsylvania |
| 28 | Richard Sheff | 19 | Son | — | Pennsylvania |
| 29 | Phyllis Sheff | 12 | Daughter | — | Pennsylvania |
| 30 | Reuben Shoenfelt | 71 | Head | Industrial Art Teacher | Pennsylvania |
| 31 | Blanche Shoenfelt | 68 | Wife | — | Pennsylvania |
| 32 | James Shade | 66 | Head | Labor | Pennsylvania |
| 33 | Laura Shade | 69 | Wife | — | Pennsylvania |
| 34 | Blair Neary | 59 | Boarder | — | Pennsylvania |
| 35 | Walter Newman | 38 | Head | Labor | Pennsylvania |
| 36 | Florence Newman | 39 | Wife | — | Pennsylvania |
| 37 | Deanne Newman | 17 | Daughter | — | Pennsylvania |
| 38 | Margaret Newman | 15 | Daughter | — | Pennsylvania |
| 39 | Paul Newman | 12 | Son | — | Pennsylvania |
| 40 | Donna Newman | 5 | Daughter | — | Pennsylvania |
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)