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Nellie Davis — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Nellie Davis across the 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a daughter (b.~1927), then head of a 11-person household.
Age 13
b. ~1927
Female
Daughter
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Davis |
| Given Name | Nellie |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh City |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Highest Grade | 8 |
| 1935 Residence | Same Place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Pittsburgh City |
| Est. Birth Year | ~1927 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Nellie | Age | Birth yr |
|---|---|---|---|---|
| Jean Davis | Daughter | — | 11 | ~1929 |
| Charlotte Davis | Daughter | — | 16 | ~1924 |
| Joann Davis | Daughter | — | 2 | ~1938 |
| Nellie Davis | Daughter | — | 13 | ~1927 |
| Robert Davis | Head | — | 35 | ~1905 |
| Donald Davis | Son | — | 9 | ~1931 |
| Kenneth Davis | Son | — | 9 | ~1931 |
| Arthur Davis | Son | — | 13 | ~1927 |
| Howard Davis | Son | — | 3 | ~1937 |
| Robert Davis | Son | — | 15 | ~1925 |
| Mae Davis | Spouse | — | 34 | ~1906 |
Census Appearances
1930
Allegheny, Pennsylvania
Daughter, age 3
Allegheny, Pennsylvania · implied b. ~1927 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Nellie |
| Relationship to Head | Daughter |
| Sex | F |
| 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 |
1940
Allegheny-County, Pennsylvania
Daughter, age 13
Allegheny-County, Pennsylvania · implied b. ~1927 — 11 household members
| Surname | Davis |
| Given Name | Nellie |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh City |
| 1935 Residence (County) | Allegheny |
| Highest Grade | 8 |
| 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 Nellie Davis across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Nellie Davis
Daughter · 1940 · age 13 · b. ~1927 · Pennsylvania
★ You are viewing this record
Sibling
Jean Davis
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Davis
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charlotte Davis
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Davis
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Arthur Davis
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joann Davis
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Howard Davis
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kenneth Davis
Sibling · 1940 · age 9
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-t0627-03670-00493)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Bernice Holleykin | 18 | daughter | Housework | Pennsylvania |
| 2 | Clyde Holleykin | 17 | son | Plumber Helper | Pennsylvania |
| 3 | Gloria Holleykin | 14 | daughter | — | Pennsylvania |
| 4 | John Holleykin | 4 | son | — | Pennsylvania |
| 5 | William Carmichael | 48 | Head | 100 | Pennsylvania |
| 6 | Ethel Carmichael | 47 | Wife | — | England |
| 7 | James Carmichael | 28 | son | 156 Laborer | Pennsylvania |
| 8 | Ethel Carmichael | 19 | daughter | — | Pennsylvania |
| 9 | May Carmichael | 14 | daughter | — | Pennsylvania |
| 10 | Albert Carmichael | 9 | son | — | Pennsylvania |
| 11 | Anna Marie Carmichael | 8 | daughter | — | Pennsylvania |
| 12 | Enoch Carmichael | 6 | son | — | Pennsylvania |
| 13 | Robert Carmichael | 1 | son | — | Pennsylvania |
| 14 | James Finnigan | 65 | Head | — | Pennsylvania |
| 15 | Elizabeth Finnigan | 58 | Wife | — | Pennsylvania |
| 16 | James Finnigan | 32 | son | Packer | Pennsylvania |
| 17 | Paul Finnigan | 30 | son | — | Pennsylvania |
| 18 | Francis Finnigan | 25 | son | Packer | Pennsylvania |
| 19 | John Finnigan | 21 | son | — | Pennsylvania |
| 20 | Ruth Finnigan | 19 | daughter | — | Pennsylvania |
| 21 | Norma Finnigan | 17 | daughter | — | Pennsylvania |
| 22 | Raymond Finnigan | 14 | son | — | Pennsylvania |
| 23 | Robert Davis | 35 | Head | Common Laborer | Pennsylvania |
| 24 | Mae Davis | 34 | Wife | — | Pennsylvania |
| 25 | Charlotte Davis | 16 | daughter | — | Pennsylvania |
| 26 | Robert Davis | 15 | son | — | Pennsylvania |
| 27 | Nellie Davis THIS PERSON | 13 | daughter | — | Pennsylvania |
| 28 | Arthur Davis | 13 | son | — | Pennsylvania |
| 29 | Jean Davis | 11 | daughter | — | Pennsylvania |
| 30 | Kenneth Davis | 9 | son | — | Pennsylvania |
| 31 | Donald Davis | 9 | son | — | Pennsylvania |
| 32 | Howard Davis | 3 | son | — | Pennsylvania |
| 33 | Joann Davis | 2 | daughter | — | Pennsylvania |
| 34 | Andrew Hodnicki | 60 | Head | 52 Heater Helper | Poland |
| 35 | Victoria Hodnicki | 55 | Wife | — | Poland |
| 36 | Helen Hodnicki | 31 | daughter | Waitress | Pennsylvania |
| 37 | Walter Hodnicki | 29 | son | Painter | Pennsylvania |
| 38 | Henry Hodnicki | 27 | son | Truck Driver | Pennsylvania |
| 39 | Clara Hodnicki | 22 | daughter | Salesgirl | Pennsylvania |
| 40 | Charles Hodnicki | 17 | son | — | Pennsylvania |
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)