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Grace Davis — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Grace Davis across the 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed) — first a daughter (b.~1923), then head of a 9-person household.
Age 17
b. ~1923
Female
Daughter
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Davis |
| Given Name | Grace |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Highest Grade | Hs 1 |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Pittsburgh |
| Est. Birth Year | ~1923 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Grace | Age | Birth yr |
|---|---|---|---|---|
| Audrey Davis | Daughter | — | 15 | ~1925 |
| Jane Davis | Daughter | — | 5 | ~1935 |
| Grace Davis | Daughter | — | 17 | ~1923 |
| Peter Davis | Head | — | 34 | ~1906 |
| Howard Davis | Son | — | 18 | ~1922 |
| Donald Davis | Son | — | 7 | ~1933 |
| Peter Davis | Son | — | 11 | ~1929 |
| Dale Davis | Son | — | 9 | ~1931 |
| Grace Davis | Spouse | — | 36 | ~1904 |
Census Appearances
1930
Allegheny, Pennsylvania
Daughter, age 6
Allegheny, Pennsylvania · implied b. ~1924 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Grace |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | none |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Daughter, age 17
Allegheny-County, Pennsylvania · implied b. ~1923 — 9 household members
| Surname | Davis |
| Given Name | Grace |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (County) | Allegheny |
| Highest Grade | Hs 1 |
| 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 Davis across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Grace Davis
Daughter · 1940 · age 17 · b. ~1923 · Pennsylvania
★ You are viewing this record
Sibling
Audrey Davis
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Howard Davis
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Peter Davis
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dale Davis
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Davis
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jane Davis
Sibling · 1940 · age 5
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-t0627-03677-00390)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | John Mcellinney | 9 | daughter | — | Pennsylvania |
| 42 | Edward Mcellinney | 5 | son | — | Pennsylvania |
| 43 | Mary Jo Mcellinney | 3 | daughter | — | Pennsylvania |
| 44 | Judy Mcellinney | 2 | daughter | — | Pennsylvania |
| 45 | Margaret Mcellinney | 64 | mother | — | Pennsylvania |
| 46 | Nicholas Bedine | 63 | head | Laborer | Italy |
| 47 | Alexander Mccluney | 35 | head | 40 | Pennsylvania |
| 48 | Amelia Mccluney | 35 | wife | — | Pennsylvania |
| 49 | Donald Mccluney | 13 | son | — | Pennsylvania |
| 50 | Richard Mccluney | 4 | son | — | Pennsylvania |
| 51 | Allan Mccluney | 1 | son | — | Pennsylvania |
| 52 | Margaret Mccluney | 63 | mother | — | Pennsylvania |
| 53 | Charles G. Ellinoy | 32 | head | 40 | Pennsylvania |
| 54 | Loretta Ellinoy | 30 | wife | — | Pennsylvania |
| 55 | Margaret Ellinoy | 9 | daughter | — | Pennsylvania |
| 56 | Charles R. Ellinoy | 8 | son | — | Pennsylvania |
| 57 | Charlene Ellinoy | 5 | daughter | — | Pennsylvania |
| 58 | Jane Ellinoy | 5 | daughter | — | Pennsylvania |
| 59 | Dolores Ellinoy | 3 | daughter | — | Pennsylvania |
| 60 | Willis Walker | 22 | head | 40 | Pennsylvania |
| 61 | Loretta Walker | 22 | wife | — | Pennsylvania |
| 62 | Joyce Walker | 2 | daughter | — | Pennsylvania |
| 63 | Samuel Derr | 37 | head | 40 | Pennsylvania |
| 64 | Phyllis Derr | 30 | wife | — | England |
| 65 | Lois Jean Derr | 2 | daughter | — | Pennsylvania |
| 66 | Edward Portman | 25 | head | 40 | Pennsylvania |
| 67 | Bertha Portman | 24 | wife | — | Pennsylvania |
| 68 | Bertha Walker | 52 | head | — | Pennsylvania |
| 69 | Ray Walker | 23 | son | 40 | Pennsylvania |
| 70 | James Walker | 19 | son | — | Pennsylvania |
| 71 | Peter Davis | 34 | head | 40 | Pennsylvania |
| 72 | Grace Davis | 36 | wife | — | Pennsylvania |
| 73 | Howard Davis | 18 | son | — | Pennsylvania |
| 74 | Grace Davis THIS PERSON | 17 | daughter | — | Pennsylvania |
| 75 | Audrey Davis | 15 | daughter | — | Pennsylvania |
| 76 | Peter Davis | 11 | son | — | Pennsylvania |
| 77 | Dale Davis | 9 | son | — | Pennsylvania |
| 78 | Donald Davis | 7 | son | — | Pennsylvania |
| 79 | Jane Davis | 5 | daughter | — | Pennsylvania |
| 80 | Mary Jackson | 60 | head | — | 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)