MC
Mary Cochran — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Mary Cochran across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1864), then head of a 5-person household.
Age 76
b. ~1864
Female
Head
Born: Scotland
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Cochran |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 76 |
| Marital Status | Widowed |
| Birthplace | Scotland |
| Naturalization Status | Naturalized |
| Additional Details | |
| Highest Grade | H-3 |
| 1935 Residence | Same place |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
| Township / Ward | Sewickley Boro |
| 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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Grace Cochran | Daughter | — | 34 | ~1906 |
| Carrie Cochran | Daughter | — | 32 | ~1908 |
| Elizabeth Cochran | Daughter | — | 49 | ~1891 |
| Helen Cochran | Daughter | — | 35 | ~1905 |
| Mary Cochran | Head | — | 76 | ~1864 |
Census Appearances
1920
Allegheny, Pennsylvania
Spouse, age 53
Allegheny, Pennsylvania · implied b. ~1867 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cochran |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Scotland |
| Year of Immigration | 1890 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Scotch |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1930
Allegheny, Pennsylvania
Other, age 63
Allegheny, Pennsylvania · implied b. ~1867 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cochran |
| Given Name | Margaret |
| Relationship to Head | wife-H |
| Sex | F |
| Color / Race | White |
| Age | 63 |
| Marital Status | Married |
| Birthplace | Scotland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1890 |
| Age at First Marriage | 27 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | none |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1940
Allegheny-County, Pennsylvania
Head, age 76
Allegheny-County, Pennsylvania · implied b. ~1864 — 5 household members
| Surname | Cochran |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 76 |
| Marital Status | Widowed |
| Birthplace | Scotland |
| Naturalization Status | Naturalized |
| Highest Grade | H-3 |
| 1935 Residence | Same place |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
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 Cochran across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Cochran
Head · 1940 · age 76 · b. ~1864 · Pennsylvania
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Allegheny-County, Pennsylvania
Open full size
1940 US Federal Census — Allegheny-County, Pennsylvania
Page Contents
38 people indexed on this census page (nara:1940:m-t0627-03416-00774)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Josephine Cooper | 57 | Head | Secretary | Pennsylvania |
| 42 | Alice B. Cooper | 49 | Sister | — | Pennsylvania |
| 43 | Virginia Schuette | 32 | Sister | — | Pennsylvania |
| 44 | Walter A. Schuette | 11 | Nephew | — | Pennsylvania |
| 45 | John P. Schuette | 10 | Nephew | — | Pennsylvania |
| 46 | Frank J. Bluley | 74 | Head | — | Pennsylvania |
| 47 | Elva H. Bluley | 72 | Wife | — | Pennsylvania |
| 48 | John Houston | 74 | Head | Traveling Salesman | Scotland |
| 49 | Elizabeth S. Houston | 68 | Wife | — | Pennsylvania |
| 50 | Stanley Houston | 28 | Son | 44 | Pennsylvania |
| 51 | Margaret Foster | 38 | Lodger | Teacher | Pennsylvania |
| 52 | Mary Cochran THIS PERSON | 76 | Head | — | Scotland |
| 53 | Elizabeth Cochran | 49 | Daughter | 40 | Pennsylvania |
| 54 | Helen Cochran | 35 | Daughter | 40 | Pennsylvania |
| 55 | Grace Cochran | 34 | Daughter | — | Pennsylvania |
| 56 | Carrie Cochran | 32 | Daughter | 40 | Pennsylvania |
| 57 | Stanley Fowler | 52 | Head | 48 | Pennsylvania |
| 58 | Anne D. Fowler | 57 | Wife | — | Pennsylvania |
| 59 | William E. Fowler | 19 | Son | — | Pennsylvania |
| 60 | Anne Papes | 26 | Maid | 56 | Pennsylvania |
| 61 | Eleanor Vosburg | 70 | Mother-in-law | — | Pennsylvania |
| 62 | Ruth A. Simpson | 36 | Lodger | 35 | Pennsylvania |
| 63 | Kathryn Bloomfield | 35 | Lodger | 35 | Pennsylvania |
| 64 | Gerald A. Moise | 55 | Head | 44 | Pennsylvania |
| 65 | Jessie R. Moise | 57 | Wife | — | Pennsylvania |
| 66 | Gerald A. Jr. Moise | 17 | Son | — | Pennsylvania |
| 67 | Mary Louetta St. Clair | 31 | Cook | Cook | Pennsylvania |
| 68 | Frank R. Ray | 49 | Head | Superintendent | Ohio |
| 69 | Bess M. Ray | 47 | Wife | — | Pennsylvania |
| 70 | Marjorie Ann Ray | 10 | Daughter | — | Pennsylvania |
| 71 | Betty Jane Ray | 8 | Daughter | — | Pennsylvania |
| 72 | Lloyd L. Martin | 41 | Head | Construction Engineer | New York |
| 73 | Thelma H. Martin | 44 | Wife | — | New York |
| 74 | Arthur B. Mcbride | 62 | Head | 39 | Pennsylvania |
| 75 | Elizabeth N. Mcbride | 57 | Wife | — | Pennsylvania |
| 76 | Henry G. Jetter | 56 | Head | 44 | Pennsylvania |
| 77 | Alice Jetter | 53 | Wife | — | Pennsylvania |
| 78 | Mary Laski | 20 | Maid | 40 | 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)