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Mary Washington — 1940 US Census Record
Model Tree available1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Mary Washington across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Henry & Jessie — first a daughter (b.~1920), then head of a 7-person household.
Age 20
b. ~1920
Female
Daughter
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Washington |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Sewickley Borough |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Sewickley Borough |
| Est. Birth Year | ~1920 |
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 |
|---|---|---|---|---|
| Mary Washington | Daughter | — | 20 | ~1920 |
| Carol Barber | Daughter | — | 4 | ~1936 |
| Celena Barber | Daughter | — | 27 | ~1913 |
| Paul Barber | Other | — | 25 | ~1915 |
| Donald Barber | Other | — | 2 | ~1938 |
| James Washington | Son | — | 25 | ~1915 |
| Anna Washington | Spouse | — | 54 | ~1886 |
Census Appearances
1920
Allegheny, Pennsylvania
Daughter, age 1
Allegheny, Pennsylvania · implied b. ~1919 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Washington |
| Given Name | Mary C |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Delaware |
| Can Read | No |
| Can Write | No |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Daughter, age 10
Allegheny, Pennsylvania · implied b. ~1920 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Washington |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Delaware |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Daughter, age 20
Allegheny-County, Pennsylvania · implied b. ~1920 — 7 household members
| Surname | Washington |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Sewickley Borough |
| 1935 Residence (County) | Allegheny |
| Highest Grade | H 4 |
| 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 Washington across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Henry Washington (~0.92 confidence) and mother Jessie Washington (~0.92 confidence) and mother Anna Washington (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Henry Washington
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Jessie Washington
b. ~1885
Source mother
● Household
· direct · ~0.92
Mother
Anna Washington
b. ~1886
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Washington
Daughter · 1940 · age 20 · b. ~1920 · Pennsylvania
★ You are viewing this record
Sibling
Carol Barber
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Washington
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Celena Barber
Sibling · 1940 · age 27
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 — 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-t0627-03416-00699)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Anna Washington | 54 | Wife | Maid Cook | South Carolina |
| 42 | James Washington | 25 | Son | Truck Driver | Pennsylvania |
| 43 | Mary Washington THIS PERSON | 20 | Daughter | — | Pennsylvania |
| 44 | Paul Barber | 25 | Son-in-law | Laborer | Kentucky |
| 45 | Celena Barber | 27 | Daughter | — | Pennsylvania |
| 46 | Carol Barber | 4 | Daughter | — | Pennsylvania |
| 47 | Donald Barber | 2 | Grandson | — | Pennsylvania |
| 48 | Mattie Bunnell | 74 | Head | — | Virginia |
| 49 | Clara Kennedy | 39 | Daughter | Maid | Virginia |
| 50 | Concetta Pinaso | 43 | Head | — | Italy |
| 51 | Floyd Pinaso | 14 | Son | — | Pennsylvania |
| 52 | Jerry Verrio | 35 | Head | Gardner | Pennsylvania |
| 53 | Rosemarie Verrio | 26 | Wife | — | Pennsylvania |
| 54 | John Verrio | 2 | Son | — | Pennsylvania |
| 55 | Rosemarie Verrio | 1 | Daughter | — | Pennsylvania |
| 56 | Samuela Rappa | 49 | Head | — | Italy |
| 57 | Floyd Rappa | 19 | Son | Census Worker | Pennsylvania |
| 58 | Thomas Rappa | 19 | Son | Census Worker | Pennsylvania |
| 59 | Joe Rappa | 18 | Son | Census Worker | Pennsylvania |
| 60 | Rose Rappa | 15 | Daughter | — | Pennsylvania |
| 61 | Duke Pinaso | 40 | Head | Gardner | Italy |
| 62 | Mary Pinaso | 36 | Wife | — | Pennsylvania |
| 63 | Frank Pinaso | 4 | Son | — | Pennsylvania |
| 64 | Robert Pinaso | 2 | Son | — | Pennsylvania |
| 65 | Rose Pinaso | 0 | Daughter | — | Pennsylvania |
| 66 | Joe Amuniza | 49 | Head | Gardner | Italy |
| 67 | Mary Amuniza | 47 | Wife | — | Italy |
| 68 | James Amuniza | 16 | Son | — | Pennsylvania |
| 69 | John Amuniza | 12 | Son | — | Pennsylvania |
| 70 | Francis Amuniza | 9 | Daughter | — | Pennsylvania |
| 71 | Jerry Vercio | 23 | Boarder | Laborer | Pennsylvania |
| 72 | Anthony Dagon | 46 | Head | Laborer | Italy |
| 73 | Herman Dagon | 19 | Son | Gardner | Italy |
| 74 | Eleanor Dagon | 12 | Daughter | — | Pennsylvania |
| 75 | Betty Dagon | 11 | Daughter | — | Pennsylvania |
| 76 | Rachael Dagon | 11 | Daughter | — | Pennsylvania |
| 77 | Fred Baron | 30 | Head | Inspector | Italy |
| 78 | Cecelia Baron | 23 | Wife | — | Italy |
| 79 | Mary Jane Baron | 2 | Daughter | — | Pennsylvania |
| 80 | John Fragazzone | 47 | Head | Gardner | Italy |
Pedigree Summary
Mary + 3 siblings
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
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)