RH
Robert Hart — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Mahoning-County, Ohio
Our Model Tree links this Robert Hart across the 1930 and 1940 US Censuses in Mahoning-County, Ohio (XGBoost, ~Confirmed) — first a son (b.~1927), then head of a 9-person household.
Age 13
b. ~1927
Male
Son
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Mahoning-County, Ohio |
| Surname | Hart |
| Given Name | Robert Perry |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Youngstown |
| 1935 Residence (County) | Mahoning |
| Additional Details | |
| Occupation | 0 |
| Income (1939) | 0 |
| Highest Grade | S-5 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | 0 |
| Township / Ward | Youngstown |
| 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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Mary Hart | Daughter | — | 10 | ~1930 |
| Ada Hart | Daughter | — | 21 | ~1919 |
| Ella Hart | Daughter | — | 17 | ~1923 |
| Elsie Hart | Daughter | — | 11 | ~1929 |
| John Hart | Son | — | 15 | ~1925 |
| Ada Hart | Spouse | — | 45 | ~1895 |
| Vera Hart | Daughter | — | 8 | ~1932 |
| John Hart | Head | — | 60 | ~1880 |
| Robert Hart | Son | — | 13 | ~1927 |
Census Appearances
1930
Mahoning, Ohio
Son, age 3
Mahoning, Ohio · implied b. ~1927 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hart |
| Given Name | Robert P. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | England |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Mahoning-County, Ohio
Son, age 13
Mahoning-County, Ohio · implied b. ~1927 — 9 household members
| Surname | Hart |
| Given Name | Robert Perry |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Youngstown |
| 1935 Residence (County) | Mahoning |
| Occupation | 0 |
| Income (1939) | 0 |
| Highest Grade | S-5 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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 Hart across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Hart
Son · 1940 · age 13 · b. ~1927 · Ohio
★ You are viewing this record
Sibling
Vera Hart
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Hart
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Hart
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elsie Hart
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ada Hart
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ella Hart
Sibling · 1940 · age 17
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 — Mahoning-County, Ohio
Open full size
1940 US Federal Census — Mahoning-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03267-00494)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Pauline Cammarone | 15 | Daughter | 0 | Ohio |
| 2 | Louisa Cammarone | 13 | Daughter | 0 | Ohio |
| 3 | Rosy Cammarone | 11 | Daughter | 0 | Ohio |
| 4 | Frank Cammarone | 9 | Son | 0 | Ohio |
| 5 | Clerann Cammarone | 3 | Daughter | 0 | Ohio |
| 6 | Ralph Smith | 48 | Head | Sather | Ohio |
| 7 | Ming Smith | 45 | Wife | 0 | New York |
| 8 | Earl Smith | 21 | Son | Laborer | Massachusetts |
| 9 | Evangeline Smith | 19 | Daughter | 0 | Massachusetts |
| 10 | Helen Smith | 15 | Daughter | 0 | Ohio |
| 11 | Esther Smith | 12 | Daughter | 0 | Ohio |
| 12 | Bernice Smith | 11 | Daughter | 0 | Ohio |
| 13 | Raymond Ramallo | 43 | Head | 0 | Spain |
| 14 | Frances Ramallo | 38 | Wife | 0 | Pennsylvania |
| 15 | Mike Kaupa | 49 | Head | Laborer | Czechoslovakia |
| 16 | Anna Kaupa | 38 | Wife | 0 | Czechoslovakia |
| 17 | Annie Kaupa | 10 | Daughter | 0 | Pennsylvania |
| 18 | John Hart | 60 | Head | 0 | Pennsylvania |
| 19 | Ada Hart | 45 | Wife | 0 | England |
| 20 | Ada Mae Hart | 21 | Daughter | 0 | Pennsylvania |
| 21 | Ella Elizabeth Hart | 17 | Daughter | 0 | Pennsylvania |
| 22 | John Walter Hart | 15 | Son | 0 | Pennsylvania |
| 23 | Robert Perry Hart THIS PERSON | 13 | Son | 0 | Ohio |
| 24 | Elsie Isabel Hart | 11 | Daughter | 0 | Ohio |
| 25 | Mary Jeanetta Hart | 10 | Daughter | 0 | Ohio |
| 26 | Vera June Hart | 8 | Daughter | 0 | Ohio |
| 27 | Pete Rinaldi | 58 | Head | Laborer | Italy |
| 28 | Caroline Rinaldi | 53 | Wife | 0 | Italy |
| 29 | Mary Rinaldi | 25 | Daughter | 0 | Italy |
| 30 | Philomena Rinaldi | 15 | Daughter | 0 | Ohio |
| 31 | Tony Rinaldi | 27 | Head | Retail Clerk | Ohio |
| 32 | Rose Rinaldi | 26 | Wife | 0 | Ohio |
| 33 | Carolina Rinaldi | 2 | Daughter | 0 | Ohio |
| 34 | James Kimmel | 65 | Head | Lay-Out Man | Pennsylvania |
| 35 | Margaret Kimmel | 70 | Wife | 0 | Pennsylvania |
| 36 | Alphonso Rosaelli | 49 | Head | Laborer | Italy |
| 37 | Anna Rosaelli | 46 | Wife | 0 | Italy |
| 38 | Dominic Rosaelli | 25 | Son | Assistant Coach | Ohio |
| 39 | Louis Rosaelli | 23 | Son | Laborer | Ohio |
| 40 | Joseph Ab Rosaelli | 22 | Son | Baker | Ohio |
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)