ID
Isaac Davis — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Allegheny, Pennsylvania
Our Model Tree links this Isaac Davis across the 1910, 1920 and 1930 US Censuses in Allegheny, Pennsylvania (XGBoost, ~Confirmed) — first a head (b.~1889), then head of a 5-person household.
Age 41
b. ~1889
Male
Head
Born: Pennsylvania
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Allegheny, Pennsylvania |
| Surname | Davis |
| Given Name | Isaac |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Age at First Marriage | 26 |
| Father's Birthplace | Russia |
| Mother's Birthplace | Russia |
| Additional Details | |
| Occupation | Physician |
| Industry | General Practice |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 15000 |
| Radio Set | R |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Physician |
| Township / Ward | Pittsburgh City |
| Est. Birth Year | ~1889 |
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 1930 census.
| Name | Relation to head | Relative to Isaac | Age | Birth yr |
|---|---|---|---|---|
| Florence Davis | Other | — | 37 | ~1893 |
| Barnetta Davis | Daughter | — | 11 | ~1919 |
| Isaac Davis | Head | — | 41 | ~1889 |
| Agnes Hinton | Other | — | 40 | ~1890 |
| Freda Davis | Daughter | — | 10 | ~1920 |
Census Appearances
1910
Allegheny, Pennsylvania
Head, age 21
Allegheny, Pennsylvania · implied b. ~1889 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Isaac J |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Years Married | 3 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Machinist |
| Industry | Railroad |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1920
Allegheny, Pennsylvania
Head, age 31
Allegheny, Pennsylvania · implied b. ~1889 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Isaac |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Father's Birthplace | Russia |
| Mother's Birthplace | Russia |
| Occupation | M.D. |
| Industry | Physician |
| Class of Worker | Oa |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Head, age 41
Allegheny, Pennsylvania · implied b. ~1889 — 5 household members
| Surname | Davis |
| Given Name | Isaac |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Age at First Marriage | 26 |
| Father's Birthplace | Russia |
| Mother's Birthplace | Russia |
| Occupation | Physician |
| Industry | General Practice |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 15000 |
| Radio Set | R |
| 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 Isaac Davis across 3 US Census years (1910, 1920 and 1930) in Allegheny, Pennsylvania, using XGBoost record linkage.
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This person
Anchor record
Isaac Davis
Head · 1930 · age 41 · b. ~1889 · Pennsylvania
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Allegheny, Pennsylvania
Open full size
1930 US Federal Census — Allegheny, Pennsylvania
Page Contents
24 people indexed on this census page (ia:1930:fifteenthcensus00reel1975:0126)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Isaac Davis THIS PERSON | 41 | Head | Physician | Pennsylvania |
| 52 | Florence H Davis | 37 | Wife-H | — | Maryland |
| 53 | Barnetta Davis | 11 | Daughter | — | Pennsylvania |
| 54 | Freda S Davis | 10 | Daughter | — | Pennsylvania |
| 55 | Agnes Hinton | 40 | Maid | Cook | Pennsylvania |
| 56 | Benjamin Weiner | 42 | Head | Physician | Russia |
| 57 | Julia P Weiner | 38 | Wife-H | — | Pennsylvania |
| 58 | Miriam R Weiner | 13 | Daughter | — | Pennsylvania |
| 59 | Marcia Weiner | 8 | Daughter | — | Pennsylvania |
| 60 | Israel B Wasser | 43 | Head | Broker | Russia |
| 61 | Mary Wasser | 42 | Wife-H | — | Russia |
| 62 | Samuel A Wasser | 22 | Son | Pharmacist | Pennsylvania |
| 63 | Evelyn Wasser | 16 | Daughter | — | Pennsylvania |
| 64 | Bessie Freidman Wasser | 23 | Daughter-in-law | — | Pennsylvania |
| 65 | Ale Schof | 50 | Head | Merchant | Russia |
| 66 | Belle Schof | 42 | Wife-H | — | Russia |
| 67 | Harold H Schof | 15 | Son | — | West Virginia |
| 68 | Charles J Ellis | 52 | Head | Physician | Pennsylvania |
| 69 | Gertrude S Ellis | 42 | Wife-H | — | Pennsylvania |
| 70 | Mary L Ellis | 19 | Daughter | — | Pennsylvania |
| 71 | Charles W Ellis | 9 | Son | — | Pennsylvania |
| 72 | Minnie Ely | 38 | Maid | Cook | Ohio |
| 73 | Florence W Early | 55 | Head | — | Pennsylvania |
| 74 | Pauline Midisteck | 18 | Maid | Housekeeper | Pennsylvania |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)