GS
Grace Smith — 1940 US Census Record
Model Tree available1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Grace Smith across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Lewis & Joseph — first a daughter (b.~1911), then head of a 5-person household.
Age 29
b. ~1911
Female
Daughter
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Smith |
| Given Name | Grace |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | West View |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Income (1939) | 100 |
| Highest Grade | Hs 3 |
| 1935 Residence | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Pittsburgh |
| Est. Birth Year | ~1911 |
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 Grace | Age | Birth yr |
|---|---|---|---|---|
| Grace Smith | Daughter | — | 29 | ~1911 |
| Louis Smith | Head | — | 67 | ~1873 |
| James Fletcher | Other | — | 31 | ~1909 |
| Louis Smith | Son | — | 14 | ~1926 |
| Mary Smith | Spouse | — | 61 | ~1879 |
Census Appearances
1920
Allegheny, Pennsylvania
Daughter, age 9
Allegheny, Pennsylvania · implied b. ~1911 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Grace |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Daughter, age 19
Allegheny, Pennsylvania · implied b. ~1911 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Grace |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Stenographer |
| Industry | Newspaper |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Daughter, age 29
Allegheny-County, Pennsylvania · implied b. ~1911 — 5 household members
| Surname | Smith |
| Given Name | Grace |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | West View |
| 1935 Residence (County) | Allegheny |
| Income (1939) | 100 |
| Highest Grade | Hs 3 |
| 1935 Residence | Pennsylvania |
| 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 Smith across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Lewis Smith (~0.92 confidence) and father Joseph Smith (~0.92 confidence) and father Louis Smith (~0.92 confidence) and mother Mary Smith (~0.92 confidence) and mother Minnie Smith (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Lewis Smith
b. ~1873
Source father
● Household
· direct · ~0.92
Father
Joseph Smith
b. ~1870
Source father
● Household
· direct · ~0.92
Father
Louis Smith
b. ~1873
Source father
● Household
· direct · ~0.92
Mother
Mary Smith
b. ~1879
Source mother
● Household
· direct · ~0.92
Mother
Minnie Smith
b. ~1880
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Grace Smith
Daughter · 1940 · age 29 · b. ~1911 · Pennsylvania
★ You are viewing this record
Sibling
Louis Smith
Sibling · 1940 · age 14
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-t0627-03673-00730)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Annie Heitt | 79 | Mother in law | — | Pennsylvania |
| 42 | William D. Frantz | 57 | Head | Store Keeper | Pennsylvania |
| 43 | Ida Frantz | 57 | Wife | — | Pennsylvania |
| 44 | Edward Fisher | 73 | Brother in law | — | Pennsylvania |
| 45 | Louis P. Smith | 67 | Head | Funeral Director | Pennsylvania |
| 46 | Mary Smith | 61 | Wife | — | Pennsylvania |
| 47 | Grace Smith THIS PERSON | 29 | Daughter | — | Pennsylvania |
| 48 | Louis P. Smith | 14 | Son | — | Pennsylvania |
| 49 | James Fletcher | 31 | Boarder | Paint Inspector | Pennsylvania |
| 50 | Orville Espey | 34 | Head | Brick Layer | Pennsylvania |
| 51 | Mary Espey | 30 | Wife | — | Pennsylvania |
| 52 | James Espey | 2 | Son | — | Pennsylvania |
| 53 | Jane Helso | 20 | Step Daughter | Package Wrapper | Pennsylvania |
| 54 | Margie Helso | 18 | Step Daughter | New Worker | Pennsylvania |
| 55 | Joseph Mary Levy | 35 | Head | Elevator Operator | Pennsylvania |
| 56 | Marion Levy | 16 | Daughter | — | Pennsylvania |
| 57 | Walter H. Labys | 37 | Head | Coil Winder | Pennsylvania |
| 58 | Mary Labys | 35 | Wife | — | Pennsylvania |
| 59 | Walter C. Labys | 3 | Son | — | Pennsylvania |
| 60 | Hugh Steigerwalt | 54 | Head | Cab Driver | Pennsylvania |
| 61 | Myrtle Steigerwalt | 54 | Wife | — | Pennsylvania |
| 62 | Nicholas Horokoski | 47 | Head | Window Cleaner | Poland |
| 63 | Anna Horokoski | 20 | Daughter | Waitress | Pennsylvania |
| 64 | Theodore Horokoski | 17 | Son | — | Pennsylvania |
| 65 | Clara Dorn | 24 | Head | Waitress | Pennsylvania |
| 66 | Caroline Scholes | 61 | Head | — | Pennsylvania |
| 67 | Caroline Scholes | 32 | Daughter | Clerk | Pennsylvania |
| 68 | William Scholes | 26 | Son | Machinist Helper | Pennsylvania |
| 69 | William G. Scholes | 4 | Grandson | — | Pennsylvania |
| 70 | Julian Phillips | 24 | Head | Baker | Pennsylvania |
| 71 | Florence Phillips | 23 | Wife | — | Pennsylvania |
| 72 | John Stringert | 22 | Head | Stone Cutter | Pennsylvania |
| 73 | Kay Stringert | 22 | Wife | — | Pennsylvania |
| 74 | Barbara Lou Stringert | 2 | Daughter | — | Pennsylvania |
| 75 | Ernest Littleford | 20 | Head | Station Attendant | Maryland |
| 76 | Janet Littleford | 18 | Wife | — | Pennsylvania |
| 77 | Blank Line | None | — | — | — |
| 78 | Frank Folova | 40 | Head | Laborer | Italy |
| 79 | Rose Catherine Folova | 32 | Wife | — | Italy |
| 80 | Louis Folova | 10 | Son | — | Italy |
Pedigree Summary
Grace + 1 sibling
Gen 1 · 5 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)