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Donald Lewis — 1940 US Census Record
Model Tree available1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Donald Lewis across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Harry & Perry — first a son (b.~1917), then head of a 6-person household.
Age 23
b. ~1917
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Lewis |
| Given Name | Donald |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Crafton Borough |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Occupation | Door Operator |
| Industry | Steel Mill |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 600 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same Place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Door Operator |
| Township / Ward | Crafton Borough |
| Est. Birth Year | ~1917 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Donald | Age | Birth yr |
|---|---|---|---|---|
| Margaret Lewis | Spouse | — | 51 | ~1889 |
| Margaret Lewis | Daughter | — | 19 | ~1921 |
| Donald Lewis | Son | — | 23 | ~1917 |
| Percy Lewis | Head | — | 55 | ~1885 |
| William Cochrane | Other | — | 45 | ~1895 |
| John Lewis | Son | — | 27 | ~1913 |
Census Appearances
1920
Allegheny, Pennsylvania
Son, age 3
Allegheny, Pennsylvania · implied b. ~1917 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lewis |
| Given Name | Donald |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Son, age 14
Allegheny, Pennsylvania · implied b. ~1916 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lewis |
| Given Name | Donald |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | West Virginia |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Son, age 23
Allegheny-County, Pennsylvania · implied b. ~1917 — 6 household members
| Surname | Lewis |
| Given Name | Donald |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Crafton Borough |
| 1935 Residence (County) | Allegheny |
| Occupation | Door Operator |
| Industry | Steel Mill |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 600 |
| Highest Grade | Hs 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 Donald Lewis across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Harry Lewis (~0.92 confidence) and father Perry Lewis (~0.92 confidence) and mother Bertha Lewis (~0.92 confidence) and mother Margaret Lewis (~0.92 confidence) and mother Margaret Lewis (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Harry Lewis
b. ~1889
Source father
● Household
· direct · ~0.92
Father
Perry Lewis
b. ~1884
Source father
● Household
· direct · ~0.92
Mother
Bertha Lewis
b. ~1887
Source mother
● Household
· direct · ~0.92
Mother
Margaret Lewis
b. ~1883
Source mother
● Household
· direct · ~0.92
Mother
Margaret Lewis
b. ~1889
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Donald Lewis
Son · 1940 · age 23 · b. ~1917 · Pennsylvania
★ You are viewing this record
Sibling
Margaret Lewis
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Lewis
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-t0627-03401-00324)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Marie Schuwerk | 30 | Daughter | Secretary | Pennsylvania |
| 42 | Julia Ferick | 50 | Daughter | Matron | Pennsylvania |
| 43 | Chas. S. Lewis | 75 | Head | Broker | Ohio |
| 44 | Martha E. Lewis | 65 | Wife | — | Ohio |
| 45 | Carrie M. Lewis | 45 | Daughter | Clerk | Ohio |
| 46 | Nelson Shanow | 33 | Head | Clerk | Pennsylvania |
| 47 | Ida Shanow | 29 | Wife | — | Pennsylvania |
| 48 | Marion B. Rauch | 43 | Head | Housework | Pennsylvania |
| 49 | John Rauch | 19 | Son | — | Pennsylvania |
| 50 | Mary Rauch | 15 | Daughter | — | Pennsylvania |
| 51 | Jessie Rauch | 13 | Daughter | — | Pennsylvania |
| 52 | Theodore Rauch | 6 | Son | — | Pennsylvania |
| 53 | John Mcewan | 47 | In-law | — | Pennsylvania |
| 54 | Frank Kress | 32 | Head | Barber | Pennsylvania |
| 55 | Dorothy Kress | 25 | Wife | — | Pennsylvania |
| 56 | Robert J. Kress | 2 | Son | — | Pennsylvania |
| 57 | James D. Gallagher | 46 | Head | Nurse | Pennsylvania |
| 58 | James F. Gallagher | 16 | Son | — | Pennsylvania |
| 59 | C. Wesley Gallagher | 15 | Son | — | Pennsylvania |
| 60 | John O. Gallagher | 10 | Son | — | Pennsylvania |
| 61 | Percy Lewis | 55 | Head | Foreman | Pennsylvania |
| 62 | Margaret Lewis | 51 | Wife | — | Pennsylvania |
| 63 | John Lewis | 27 | Son | Driver | Pennsylvania |
| 64 | Donald Lewis THIS PERSON | 23 | Son | Door Operator | Pennsylvania |
| 65 | Margaret Lewis | 19 | Daughter | Secretary | Pennsylvania |
| 66 | William A. Cochrane | 45 | Son-in-law | Cement Finisher | Pennsylvania |
| 67 | Charles A. Hawk | 59 | Head | Printer | Pennsylvania |
| 68 | Martha Hawk | 33 | Daughter | Secretary | Pennsylvania |
| 69 | Charles J. Hawk | 27 | Son | Salesman | Pennsylvania |
| 70 | Anna Dornie | 50 | Housekeeper | Maid | Scotland |
| 71 | Paul E. Sr. Marley | 44 | Head | Dentist | Ohio |
| 72 | Maryanne Marley | 35 | Wife | — | Ohio |
| 73 | Anneita Marley | 9 | Daughter | — | Pennsylvania |
| 74 | Paul E. Marley | 7 | Son | — | Pennsylvania |
| 75 | William G. Marley | 2 | Son | — | Pennsylvania |
| 76 | William J. Berard | 64 | Head | Gang Foreman | Pennsylvania |
| 77 | Clara G. Berard | 58 | Wife | — | Pennsylvania |
| 78 | Marie Berard | 30 | Daughter | — | Pennsylvania |
| 79 | Joseph Berard | 20 | Son | — | Pennsylvania |
| 80 | Anne Berard | 25 | Daughter | Saleslady | Pennsylvania |
Pedigree Summary
Donald + 2 siblings
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)