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Grace Lewis — 1940 US Census Record
Model Tree available1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Grace Lewis across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Charles & Blanche — first a daughter (b.~1918), then head of a 4-person household.
Age 22
b. ~1918
Female
Daughter
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Lewis |
| Given Name | Grace |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Occupation | Waitress |
| Industry | Tea Room |
| Class of Worker | PW |
| Hours Worked | 55 |
| Income (1939) | 240 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Waitress |
| Township / Ward | Pittsburgh |
| Est. Birth Year | ~1918 |
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 Grace | Age | Birth yr |
|---|---|---|---|---|
| Grace Lewis | Daughter | — | 22 | ~1918 |
| Clara Lewis | Daughter | — | 19 | ~1921 |
| John Lewis | Son | — | 26 | ~1914 |
| Blanche Lewis | Head | — | 54 | ~1886 |
Census Appearances
1920
Allegheny, Pennsylvania
Daughter, age 3
Allegheny, Pennsylvania · implied b. ~1917 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lewis |
| Given Name | Grace |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Ireland |
| Occupation | none |
| Can Read | No |
| Can Write | No |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Daughter, age 13
Allegheny, Pennsylvania · implied b. ~1917 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lewis |
| Given Name | Grace |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Ireland |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Daughter, age 22
Allegheny-County, Pennsylvania · implied b. ~1918 — 4 household members
| Surname | Lewis |
| Given Name | Grace |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Occupation | Waitress |
| Industry | Tea Room |
| Class of Worker | PW |
| Hours Worked | 55 |
| Income (1939) | 240 |
| Highest Grade | No 8 |
| 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 Grace Lewis across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Charles Lewis (~0.92 confidence) and mother Blanche Lewis (~0.92 confidence) and mother Margaret Lewis (~0.92 confidence) and mother Margaret Lewis (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Charles Lewis
b. ~1878
Source father
● Household
· direct · ~0.92
Mother
Blanche Lewis
b. ~1886
Source mother
● Household
· direct · ~0.92
Mother
Margaret Lewis
b. ~1887
Source mother
● Household
· direct · ~0.92
Mother
Margaret Lewis
b. ~1884
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Grace Lewis
Daughter · 1940 · age 22 · b. ~1918 · Pennsylvania
★ You are viewing this record
Sibling
Clara Lewis
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Lewis
Sibling · 1940 · age 26
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-t0627-03672-00144)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Thomas Brownlee | 5 | Son | — | Pennsylvania |
| 2 | Margaret Brownlee | 3 | Daughter | — | Pennsylvania |
| 3 | Carrie M Shelton | 61 | Head | — | Pennsylvania |
| 4 | Carrie Shelton | 35 | Daughter | Saleswoman | Pennsylvania |
| 5 | George Leech | 66 | Lodger | — | Pennsylvania |
| 6 | Boseff Nicholas | 54 | Lodger | Barber | Bulgaria |
| 7 | Chas Evans | 57 | Lodger | Steam Fireman | West Virginia |
| 8 | Gerner Jackson | 31 | Head | Waitress | Pennsylvania |
| 9 | Mary Jackson | 13 | Daughter | — | Pennsylvania |
| 10 | Clifford Woodward | 63 | Head | Engineman | Pennsylvania |
| 11 | Luella Woodward | 56 | Wife | — | Pennsylvania |
| 12 | Clifford Woodward | 15 | Son | — | Pennsylvania |
| 13 | Mabel Woodward | 12 | Daughter | — | Pennsylvania |
| 14 | Lottie Hawthorne | 51 | Head | — | Pennsylvania |
| 15 | Joseph Cowley | 43 | Lodger | Truck Driver | Pennsylvania |
| 16 | Julia Rumpler | 26 | Lodger | Waitress | Pennsylvania |
| 17 | Robert Rumpler | 2 | Lodger | — | Pennsylvania |
| 18 | Hannah Avenall | 23 | Head | Seamstress | Pennsylvania |
| 19 | Regis Avenall | 2 | Son | — | Pennsylvania |
| 20 | Lawrence Mccarthy | 47 | Head | Laborer | Pennsylvania |
| 21 | Charles M Kincaid | 36 | Lodger | Roadman | Pennsylvania |
| 22 | Margaret Teufel | 71 | Head | — | Pennsylvania |
| 23 | Blanche Lewis | 54 | Head | — | Pennsylvania |
| 24 | John Lewis | 26 | Son | Warehouseman | Pennsylvania |
| 25 | Grace Lewis THIS PERSON | 22 | Daughter | Waitress | Pennsylvania |
| 26 | Clara Lewis | 19 | Daughter | Newworker | Pennsylvania |
| 27 | Donald Burns | 31 | Head | — | Pennsylvania |
| 28 | Gertrude Burns | 30 | Wife | — | Pennsylvania |
| 29 | William Hartle | 40 | Head | Salesman | Pennsylvania |
| 30 | Elizabeth Hartle | 45 | Wife | — | Pennsylvania |
| 31 | Fred Spalding | 59 | Head | — | Pennsylvania |
| 32 | Ellen Spalding | 57 | Wife | — | Pennsylvania |
| 33 | William Frank | 32 | Head | Steel Polisher | Pennsylvania |
| 34 | Margaret Kerr | 44 | Head | Seamstress | Pennsylvania |
| 35 | Olive P Reeves | 67 | Head | — | West Virginia |
| 36 | Robert Latta | 74 | Lodger | — | Pennsylvania |
| 37 | George W Robe | 74 | Lodger | — | Pennsylvania |
| 38 | Robert Williams | 63 | Lodger | — | West Virginia |
| 39 | Royal L Bardi | 31 | Head | Painter | Ohio |
| 40 | Estella Bardi | 24 | Wife | — | Pennsylvania |
Pedigree Summary
Grace + 2 siblings
Gen 1 · 4 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)