MS
Mary Schmidt — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Mary Schmidt across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a spouse (b.~1879), then head of a 4-person household.
Age 61
b. ~1879
Female
Spouse
Born: Pennsylvania
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Schmidt |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 61 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh City |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | No 3 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Pittsburgh City |
| Est. Birth Year | ~1879 |
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 |
|---|---|---|---|---|
| Frank Schmidt | Head | — | 63 | ~1877 |
| Albert Schmidt | Son | — | 28 | ~1912 |
| Franklin Schmidt | Son | — | 20 | ~1920 |
| Mary Schmidt | Spouse | — | 61 | ~1879 |
Census Appearances
1920
Allegheny, Pennsylvania
Spouse, age 40
Allegheny, Pennsylvania · implied b. ~1880 — 12 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Schmidt |
| Given Name | Mary E |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Spouse, age 50
Allegheny, Pennsylvania · implied b. ~1880 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Schmidt |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Age at First Marriage | 22 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Spouse, age 61
Allegheny-County, Pennsylvania · implied b. ~1879 — 4 household members
| Surname | Schmidt |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 61 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh City |
| 1935 Residence (County) | Allegheny |
| Class of Worker | 0 |
| Highest Grade | No 3 |
| 1935 Residence | Same place |
| 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 Schmidt across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Schmidt
Spouse · 1940 · age 61 · b. ~1879 · Pennsylvania
★ You are viewing this record
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
40 people indexed on this census page (nara:1940:m-t0627-03665-00310)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Walter Kavenakie | 25 | Head | Salesman | Pennsylvania |
| 42 | Frances Kavenakie | 22 | Daughter | Cake Wrapper | Pennsylvania |
| 43 | Raymond Kavenakie | 20 | Son | Corner Boy | Pennsylvania |
| 44 | Gladys Kavenakie | 13 | Daughter | — | Pennsylvania |
| 45 | Rose Marie Kavenakie | 11 | Daughter | — | Pennsylvania |
| 46 | Donald Kavenakie | 5 | Son | — | Pennsylvania |
| 47 | John J. Mierzejewski | 47 | Head | Crane Man | Pennsylvania |
| 48 | Marie Mierzejewski | 41 | Wife | — | Poland |
| 49 | Walter Mierzejewski | 19 | Son | New Worker | Pennsylvania |
| 50 | Frances Mierzejewski | 12 | Daughter | — | Pennsylvania |
| 51 | Thomas Plubicke | 63 | Head | — | Poland |
| 52 | Catherine Plubicke | 62 | Wife | — | Poland |
| 53 | Frank Schmidt | 63 | Head | Gen Laborer | Pennsylvania |
| 54 | Mary Schmidt THIS PERSON | 61 | Wife | — | Pennsylvania |
| 55 | Albert Schmidt | 28 | Son | Stock Room | Pennsylvania |
| 56 | Franklin Schmidt | 20 | Son | Shipper | Pennsylvania |
| 57 | Michael Feldmeier | 72 | Head | — | Germany |
| 58 | Grace Feldmeier | 64 | Wife | — | Germany |
| 59 | Joseph Jr. Holzbauer | 49 | Head | Laborer | Pennsylvania |
| 60 | Frank Holzbauer | 46 | Brother | Laborer | Pennsylvania |
| 61 | Louis Holzbauer | 43 | Brother | Truck Driver | Pennsylvania |
| 62 | Frank Novak | 51 | Head | Gen Laborer | Czechoslovakia |
| 63 | Catherine Novak | 44 | Wife | — | Czechoslovakia |
| 64 | John Novak | 25 | Son | Brakeman | Pennsylvania |
| 65 | Frank Novak | 24 | Son | Catcher | Michigan |
| 66 | Mary Novak | 22 | Daughter | Packer | Pennsylvania |
| 67 | Andrew Novak | 18 | Son | Helper | Pennsylvania |
| 68 | Irene Novak | 15 | Daughter | — | Pennsylvania |
| 69 | Albert Novak | 13 | Son | — | Pennsylvania |
| 70 | Catherine Novak | 11 | Daughter | — | Pennsylvania |
| 71 | Rose Marie Novak | 9 | Daughter | — | Pennsylvania |
| 72 | Stephen Novak | 6 | Son | — | Pennsylvania |
| 73 | Margaret Novak | 3 | Daughter | — | Pennsylvania |
| 74 | Charles Pletcher | 42 | Head | Gen Laborer | Pennsylvania |
| 75 | Victoria Pletcher | 42 | Wife | Charwoman | Pennsylvania |
| 76 | Charles W. Pletcher | 8 | Son | — | Pennsylvania |
| 77 | Marie C. Pletcher | 7 | Daughter | — | Pennsylvania |
| 78 | Henry Temple | 33 | Head | Clerk | Pennsylvania |
| 79 | Louisa Temple | 31 | Wife | — | Pennsylvania |
| 80 | Rita P. Temple | 7 | 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)