MH
Mary Haas — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Mary Haas across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a spouse (b.~1864), then head of a 4-person household.
Age 76
b. ~1864
Female
Spouse
Born: England
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Haas |
| Given Name | Mary B. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 76 |
| Marital Status | Married |
| Birthplace | England |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Naturalization Status | Naturalized |
| Additional Details | |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth Country | England |
| Birthplace (normalized) | england |
| Township / Ward | Pittsburgh |
| 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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| John Haas | Son | — | 37 | ~1903 |
| Frank Haas | Other | — | 6 | ~1934 |
| Mary Haas | Spouse | — | 76 | ~1864 |
| John Haas | Head | — | 71 | ~1869 |
Census Appearances
1920
Allegheny, Pennsylvania
Spouse, age 54
Allegheny, Pennsylvania · implied b. ~1866 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Haas |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | England |
| Year of Immigration | 1872 |
| Naturalization Status | Naturalized |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | England |
| Year of Naturalization | 1896 |
| Birthplace (normalized) | england |
1930
Allegheny, Pennsylvania
Other, age 65
Allegheny, Pennsylvania · implied b. ~1865 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Haas |
| Given Name | Mary E. |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 65 |
| Marital Status | Married |
| Birthplace | England |
| Naturalization Status | Naturalized |
| Year of Immigration | 1872 |
| Age at First Marriage | 31 |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Can Read/Write | Yes |
| Mother Tongue | England |
| Birth Country | England |
| Birthplace (normalized) | england |
1940
Allegheny-County, Pennsylvania
Spouse, age 76
Allegheny-County, Pennsylvania · implied b. ~1864 — 4 household members
| Surname | Haas |
| Given Name | Mary B. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 76 |
| Marital Status | Married |
| Birthplace | England |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Naturalization Status | Naturalized |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth Country | England |
| Birthplace (normalized) | england |
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 Haas across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Haas
Spouse · 1940 · age 76 · b. ~1864 · 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-t0627-03665-00472)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Edward Hoffman | 21 | Son | Butcher | Pennsylvania |
| 42 | Violet Hoffman | 10 | Daughter | — | Pennsylvania |
| 43 | Andrew B. Donhancey | 49 | Head | Laborer | Hungary |
| 44 | Mary Donhancey | 41 | Wife | — | Hungary |
| 45 | John Donhancey | 22 | Son | New-Worker | Pennsylvania |
| 46 | Anna Donhancey | 21 | Daughter | Laundress | Pennsylvania |
| 47 | Mary Donhancey | 19 | Daughter | Waitress | Pennsylvania |
| 48 | Helen Donhancey | 16 | Daughter | — | Pennsylvania |
| 49 | Andrew Donhancey | 14 | Son | — | Pennsylvania |
| 50 | John L. Haas | 71 | Head | Salesclerk | Pennsylvania |
| 51 | Mary B. Haas THIS PERSON | 76 | Wife | — | England |
| 52 | John L. Jr. Haas | 37 | Son | Sign Painter | Pennsylvania |
| 53 | Frank Haas | 6 | Grandson | — | Pennsylvania |
| 54 | Ralph Moelein | 42 | Head | Sheet Metal Worker | Pennsylvania |
| 55 | Victoria Moelein | 41 | Wife | — | Germany |
| 56 | Dolores Moelein | 21 | Daughter | Folder | Pennsylvania |
| 57 | William Moelein | 19 | Son | Laborer | Pennsylvania |
| 58 | Joseph Moelein | 17 | Son | — | Pennsylvania |
| 59 | Robert Moelein | 15 | Son | — | Pennsylvania |
| 60 | Richard Moelein | 11 | Son | — | Pennsylvania |
| 61 | Bernadette Moelein | 6 | Daughter | — | Pennsylvania |
| 62 | Albert Schaffer | 53 | Head | Rodman | Pennsylvania |
| 63 | Christina Schaffer | 44 | Wife | — | Pennsylvania |
| 64 | Albert E. Schaffer | 23 | Son | Salesclerk | Pennsylvania |
| 65 | Raymond Mcgraner | 35 | Head | Open Hearth Stocker | Pennsylvania |
| 66 | Barbara Mcgraner | 46 | Wife | Nurse | Ohio |
| 67 | William Hafner | 38 | Head | Baker | Germany |
| 68 | Anna Hafner | 38 | Wife | — | Pennsylvania |
| 69 | Anna Burr | 60 | Head | — | Pennsylvania |
| 70 | Sylvester Burr | 41 | Son | Mail-Clerk | Pennsylvania |
| 71 | Charles Biere | 31 | Head | Electrician Helper | Pennsylvania |
| 72 | Margaret Biere | 30 | Wife | — | Pennsylvania |
| 73 | Dolores Biere | 8 | Daughter | — | Pennsylvania |
| 74 | Carol Ann Biere | 0 | Daughter | — | Pennsylvania |
| 75 | Jerry Boleback | 34 | Head | Craneman | Pennsylvania |
| 76 | Margaret Boleback | 29 | Wife | — | Pennsylvania |
| 77 | Joseph Schmidt | 55 | Father-in-law | Truck-Driver | Pennsylvania |
| 78 | Louis Bercher | 45 | Head | Senior-Clerk | Pennsylvania |
| 79 | Anna Bercher | 38 | Wife | — | Pennsylvania |
| 80 | Betty Bercher | 17 | Daughter | New-Worker | 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)