RD
Ray Davis — 1940 US Census Record
Model Tree available1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Ray Davis across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Claude & Claude — first a son (b.~1917), then head of a 4-person household.
Age 23
b. ~1917
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Davis |
| Given Name | Ray |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Turtle Creek Borough |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Occupation | Clerk |
| Industry | U. Railroad |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 200 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Clerk |
| Township / Ward | Turtle Creek 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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Ray | Age | Birth yr |
|---|---|---|---|---|
| Ray Davis | Son | — | 23 | ~1917 |
| Emma Nicholson | Daughter | — | 11 | ~1929 |
| George Nicholson | Head | — | 40 | ~1900 |
| Lloyd Nicholson | Son | — | 15 | ~1925 |
Census Appearances
1920
Allegheny, Pennsylvania
Son, age 2
Allegheny, Pennsylvania · implied b. ~1918 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Roy |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read | No |
| Can Write | No |
| Speaks English | No |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
Son, age 13
Allegheny, Pennsylvania · implied b. ~1917 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Roy |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| 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 — 4 household members
| Surname | Davis |
| Given Name | Ray |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Turtle Creek Borough |
| 1935 Residence (County) | Allegheny |
| Occupation | Clerk |
| Industry | U. Railroad |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 200 |
| 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 Ray Davis across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Claude Davis (~0.92 confidence) and father Claude Davis (~0.92 confidence) and mother Amanda Davis (~0.92 confidence) and mother George Nicholson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Claude Davis
b. ~1882
Source father
● Household
· direct · ~0.92
Father
Claude Davis
b. ~1882
Source father
● Household
· direct · ~0.92
Mother
Amanda Davis
b. ~1889
Source mother
● Household
· direct · ~0.92
Mother
George Nicholson
b. ~1900
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Ray Davis
Son · 1940 · age 23 · b. ~1917 · Pennsylvania
★ You are viewing this record
Sibling
Lloyd Nicholson
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Emma Nicholson
Sibling · 1940 · age 11
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-t0627-03419-00406)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Sante Castagna | 66 | Head | Ot | Italy |
| 2 | Angela Castagna | 64 | Wife | — | Italy |
| 3 | Domenic De Sio | 31 | Head | Helper | Pennsylvania |
| 4 | Anna De Sio | 27 | Wife | — | Pennsylvania |
| 5 | Charles Cimino | 34 | Head | Printer | Pennsylvania |
| 6 | Rose Cimino | 38 | Wife | — | North Carolina |
| 7 | Oden Douglass | 46 | Head | Labor | Maryland |
| 8 | Grace Douglass | 41 | Wife | — | South Carolina |
| 9 | Wilbur Douglass | 19 | Son | Labor | South Carolina |
| 10 | Inez Denton | 17 | Stepdaughter | — | Maryland |
| 11 | Marie Fraser | 52 | Head | — | Maryland |
| 12 | Ernest Pfeifer | 60 | Lodger | Painter | Pennsylvania |
| 13 | Edward Murr | 38 | Head | Printer | Pennsylvania |
| 14 | Mary Murr | 38 | Wife | — | Pennsylvania |
| 15 | Paul Hage | 39 | Head | Labor | Vermont |
| 16 | Bernadette Hage | 32 | Wife | — | Pennsylvania |
| 17 | John Quinlan | 30 | Head | Mechanic | Pennsylvania |
| 18 | Betty Quinlan | 29 | Wife | Teacher | Pennsylvania |
| 19 | Elizabeth Groce | 62 | Head | Cleaner | Pennsylvania |
| 20 | John Medura | 28 | Head | Labor | Scotland |
| 21 | Jean Medura | 22 | Wife | — | Scotland |
| 22 | John Medura | 2 | Son | — | Pennsylvania |
| 23 | James Medura | 0 | Son | — | Pennsylvania |
| 24 | George Nicholson | 40 | Head | — | Pennsylvania |
| 25 | Lloyd Nicholson | 15 | Son | — | Pennsylvania |
| 26 | Emma R. Nicholson | 11 | Daughter | — | Pennsylvania |
| 27 | Ray Davis THIS PERSON | 23 | Son | Clerk | Pennsylvania |
| 28 | Thomas Murr | 60 | Head | Attendant | Pennsylvania |
| 29 | Agnes Murr | 20 | Daughter | — | Pennsylvania |
| 30 | Paul Wagner | 44 | Lodger | Labor | Pennsylvania |
| 31 | John Mrimlow | 66 | Head | — | England |
| 32 | Rachel Mrimlow | 61 | Wife | — | England |
| 33 | Paul Mrimlow | 21 | Son | Clerk | Pennsylvania |
| 34 | David Mrimlow | 16 | Son | — | Pennsylvania |
| 35 | David Brown | 39 | Head | Labor | Scotland |
| 36 | Helen Brown | 37 | Wife | — | Pennsylvania |
| 37 | David Brown | 15 | Son | — | Pennsylvania |
| 38 | Louise Brown | 8 | Daughter | — | Pennsylvania |
| 39 | Benny Carver | 20 | Head | Labor | Pennsylvania |
| 40 | Mary Carver | 18 | Wife | — | Pennsylvania |
Related Census Records
Pedigree Summary
Ray + 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)