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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 Bert & Frank — first a daughter (b.~1912), then head of a 3-person household.
Age 28
b. ~1912
Female
Daughter
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Lewis |
| Given Name | Grace E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Sewickley Heights Township |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Occupation | child's nurse |
| Industry | private home |
| Class of Worker | PW |
| Hours Worked | 70 |
| Income (1939) | 250 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same House |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Child'S Nurse |
| Township / Ward | Sewickley Heights Township |
| Est. Birth Year | ~1912 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Grace | Age | Birth yr |
|---|---|---|---|---|
| Grace Lewis | Daughter | — | 28 | ~1912 |
| Harry Lewis | Son | — | 26 | ~1914 |
| Anna Lewis | Head | — | 52 | ~1888 |
Census Appearances
1920
Allegheny, Pennsylvania
Daughter, age 8
Allegheny, Pennsylvania · implied b. ~1912 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lewis |
| Given Name | Grace E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Germany |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | German |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Daughter, age 18
Allegheny, Pennsylvania · implied b. ~1912 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lewis |
| Given Name | Grace |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Germany |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Daughter, age 28
Allegheny-County, Pennsylvania · implied b. ~1912 — 3 household members
| Surname | Lewis |
| Given Name | Grace E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Sewickley Heights Township |
| 1935 Residence (County) | Allegheny |
| Occupation | child's nurse |
| Industry | private home |
| Class of Worker | PW |
| Hours Worked | 70 |
| Income (1939) | 250 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same House |
| 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 Bert Lewis (~0.92 confidence) and father Frank Lewis (~0.92 confidence) and mother Anna Lewis (~0.92 confidence) and mother Anna Lewis (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Bert Lewis
b. ~1874
Source father
● Household
· direct · ~0.92
Father
Frank Lewis
b. ~1873
Source father
● Household
· direct · ~0.92
Mother
Anna Lewis
b. ~1888
Source mother
● Household
· direct · ~0.92
Mother
Anna Lewis
b. ~1886
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Grace Lewis
Daughter · 1940 · age 28 · b. ~1912 · Pennsylvania
★ You are viewing this record
Sibling
Harry 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-t0627-03417-00052)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Renwick S. Sprott | 54 | Head | Laborer | Pennsylvania |
| 42 | Mary A. Sprott | 54 | Wife | — | Pennsylvania |
| 43 | Mary M. Sprott | 28 | Daughter | Grade School Teacher | Maryland |
| 44 | Jack M. Sprott | 26 | Son | Laborer | Pennsylvania |
| 45 | James R. Sprott | 25 | Son | — | Pennsylvania |
| 46 | Duane W. Sprott | 13 | Son | — | Pennsylvania |
| 47 | Anna B. Lewis | 52 | Head | — | Germany |
| 48 | Grace E. Lewis THIS PERSON | 28 | Daughter | Child'S Nurse | Pennsylvania |
| 49 | Harry L. Lewis | 26 | Son | Assistant Buyer | Pennsylvania |
| 50 | George C. Minick | 66 | Head | — | Pennsylvania |
| 51 | Philomena T. Minick | 65 | Wife | — | Pennsylvania |
| 52 | Shirley M. Minick | 36 | Daughter | Grade School Teacher | Pennsylvania |
| 53 | Helen M. Minick | 29 | Daughter | Credit Clerk | Pennsylvania |
| 54 | Adella E. Minick | 24 | Daughter | Clerk | Pennsylvania |
| 55 | Arthur C. Minick | 29 | Head | Accountant | Pennsylvania |
| 56 | Henrietta A. Minick | 27 | Wife | — | Pennsylvania |
| 57 | John A. Bissinger | 37 | Head | Superintendent | Pennsylvania |
| 58 | Rosella P. Bissinger | 32 | Wife | — | Pennsylvania |
| 59 | John A. Iii Bissinger | 6 | Son | — | Pennsylvania |
| 60 | Barbara A. Bissinger | 3 | Daughter | — | Pennsylvania |
| 61 | Frank Martin | 59 | Head | Foreman | Pennsylvania |
| 62 | Rosina Martin | 55 | Wife | — | Pennsylvania |
| 63 | Arthur G. Martin | 26 | Son | Laborer | Pennsylvania |
| 64 | George C. Wachter | 62 | Brother-in-law | Pumper | Pennsylvania |
| 65 | Herman Brendle | 37 | Head | Laborer | Pennsylvania |
| 66 | Helen M. Brendle | 33 | Wife | — | Pennsylvania |
| 67 | Mary E. Brendle | 8 | Daughter | — | Pennsylvania |
| 68 | Herman Jr. Brendle | 5 | Son | — | Pennsylvania |
| 69 | Charles B. Wachter | 60 | Head | Driller | Pennsylvania |
| 70 | Ethel J. Wachter | 23 | Daughter | — | Pennsylvania |
| 71 | Hania T. Wachter | 22 | Daughter | Set Up Girl | Pennsylvania |
| 72 | Carl E. Wachter | 19 | Son | Delivery Boy | Pennsylvania |
| 73 | Evelyn R. Wachter | 12 | Daughter | — | Pennsylvania |
| 74 | John B. Wachter | 16 | Son | — | Pennsylvania |
| 75 | Carole B. Wachter | 10 | Daughter | — | Pennsylvania |
| 76 | John Pagan | 70 | Head | — | Pennsylvania |
| 77 | Joseph Ammon | 38 | Head | Proprietor | Pennsylvania |
| 78 | Katherine M. Ammon | 37 | Wife | — | Pennsylvania |
| 79 | Joseph E. Ammon | 64 | Father | Laborer | Pennsylvania |
| 80 | Harry G. Bennett | 33 | Head | Stone Worker | Pennsylvania |
Pedigree Summary
Grace + 1 sibling
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)