RD
Robert Davis — 1940 US Census Record
Model Tree available1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Robert Davis across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Ernest & Tanya — first a son (b.~1914), then head of a 5-person household.
Age 26
b. ~1914
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Davis |
| Given Name | Robert B. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Crafton Borough |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Occupation | Clerk |
| Industry | Gas-Producer Utility |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 2665 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Clerk |
| Township / Ward | Crafton Borough |
| Est. Birth Year | ~1914 |
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 Robert | Age | Birth yr |
|---|---|---|---|---|
| Catherine Davis | Daughter | — | 27 | ~1913 |
| Betty Davis | Daughter | — | 18 | ~1922 |
| Laura Davis | Head | — | 57 | ~1883 |
| William Davis | Son | — | 23 | ~1917 |
| Robert Davis | Son | — | 26 | ~1914 |
Census Appearances
1920
Allegheny, Pennsylvania
Son, age 5
Allegheny, Pennsylvania · implied b. ~1915 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Robert P. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Son, age 16
Allegheny, Pennsylvania · implied b. ~1914 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Robert P |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Pennsylvania |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Son, age 26
Allegheny-County, Pennsylvania · implied b. ~1914 — 5 household members
| Surname | Davis |
| Given Name | Robert B. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Crafton Borough |
| 1935 Residence (County) | Allegheny |
| Occupation | Clerk |
| Industry | Gas-Producer Utility |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 2665 |
| 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 Robert Davis across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Ernest Davis (~0.92 confidence) and mother Tanya Davis (~0.92 confidence) and mother Lida Davis (~0.92 confidence) and mother Laura Davis (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Ernest Davis
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Tanya Davis
b. ~1886
Source mother
● Household
· direct · ~0.92
Mother
Lida Davis
b. ~1886
Source mother
● Household
· direct · ~0.92
Mother
Laura Davis
b. ~1883
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Davis
Son · 1940 · age 26 · b. ~1914 · Pennsylvania
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Sibling
William Davis
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Betty Davis
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Davis
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-t0627-03401-00478)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Gertrude Carr | 28 | Daughter | — | Pennsylvania |
| 42 | John Robert Carr | 3 | Son | — | Pennsylvania |
| 43 | Matthew Vea | 41 | Head | Salesman | Wisconsin |
| 44 | Lucille Vea | 39 | Wife | Telephone Operator | Illinois |
| 45 | David Vea | 11 | Son | — | Ohio |
| 46 | Theodore Vea | 9 | Son | — | Ohio |
| 47 | Peter Vea | 2 | Son | — | Pennsylvania |
| 48 | Richard D. Thomas | 65 | Head | Telegraph Operator | Wales |
| 49 | Louise Thomas | 63 | Wife | — | Pennsylvania |
| 50 | Helen C. Thomas | 37 | Daughter | Teacher | Pennsylvania |
| 51 | James Trimble | 44 | Son-in-law | Cashier | Pennsylvania |
| 52 | Mildred Trimble | 34 | Daughter | — | Pennsylvania |
| 53 | Jacqueline Trimble | 3 | Daughter | — | Pennsylvania |
| 54 | John Sullivan | 48 | Head | Cable Man | Pennsylvania |
| 55 | Sarah Sullivan | 45 | Wife | — | Pennsylvania |
| 56 | Margaret Sullivan | 17 | Daughter | — | Pennsylvania |
| 57 | Florence Sullivan | 16 | Daughter | — | Pennsylvania |
| 58 | Dorothy Sullivan | 13 | Daughter | — | Pennsylvania |
| 59 | Jean Sullivan | 11 | Daughter | — | Pennsylvania |
| 60 | John Sullivan | 8 | Son | — | Pennsylvania |
| 61 | Robert Sullivan | 5 | Son | — | Pennsylvania |
| 62 | Sarah Sullivan | 2 | Daughter | — | Pennsylvania |
| 63 | Wayland Bowser | 46 | Head | Assistant Manager | Pennsylvania |
| 64 | Mary Bowser | 39 | Wife | — | Pennsylvania |
| 65 | Wayland Bowser | 9 | Son | — | Pennsylvania |
| 66 | Laura Davis | 57 | Head | — | Pennsylvania |
| 67 | Catherine Davis | 27 | Daughter | Secretary | Pennsylvania |
| 68 | Robert B. Davis THIS PERSON | 26 | Son | Clerk | Pennsylvania |
| 69 | William Leich Davis | 23 | Son | Clerk | Pennsylvania |
| 70 | Betty Jane Davis | 18 | Daughter | New Worker | Pennsylvania |
| 71 | Robert J. Meister | 59 | Head | Salesman | Ohio |
| 72 | Sarah Meister | 59 | Wife | — | Pennsylvania |
| 73 | Maude H. Munnell | 65 | Head | Stenographer | Pennsylvania |
| 74 | Edith Zelda Munnell | 56 | Sister | — | Pennsylvania |
| 75 | Ray Wunderly | 57 | Head | Civil Engineer | Pennsylvania |
| 76 | Cora Wunderly | 57 | Wife | — | Pennsylvania |
| 77 | Simon Rudolph | 47 | Head | Coffee Importer | Pennsylvania |
| 78 | Juliet Rudolph | 46 | Wife | — | Pennsylvania |
| 79 | John Rudolph | 18 | Son | — | Pennsylvania |
| 80 | Miriam Rudolph | 16 | Daughter | — | Pennsylvania |
Related Census Records
Pedigree Summary
Robert + 3 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)