JH
Joseph Hart — 1940 US Census Record
Model Tree available1940 United States Federal Census · Erie-County, Pennsylvania
Our Model Tree links this Joseph Hart across the 1920, 1930 and 1940 US Censuses in Erie-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents James & James — first a son (b.~1919), then head of a 7-person household.
Age 21
b. ~1919
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Erie-County, Pennsylvania |
| Surname | Hart |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Erie |
| 1935 Residence (County) | Erie |
| Additional Details | |
| Occupation | Clerk |
| Industry | Iron Ore Co. |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1200 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Clerk |
| Township / Ward | Erie |
| Est. Birth Year | ~1919 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Joseph | Age | Birth yr |
|---|---|---|---|---|
| Laura Hart | Daughter | — | 16 | ~1924 |
| Joseph Hart | Son | — | 21 | ~1919 |
| Helen Hart | Daughter | — | 27 | ~1913 |
| Mary Hart | Spouse | — | 65 | ~1875 |
| John Hart | Son | — | 41 | ~1899 |
| James Hart | Son | — | 25 | ~1915 |
| James Hart | Head | — | 65 | ~1875 |
Census Appearances
1920
Erie, Pennsylvania
Son, age 1
Erie, Pennsylvania · implied b. ~1919 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hart |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read | No |
| Can Write | No |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Erie, Pennsylvania
Son, age 11
Erie, Pennsylvania · implied b. ~1919 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hart |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| 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
Erie-County, Pennsylvania
Son, age 21
Erie-County, Pennsylvania · implied b. ~1919 — 7 household members
| Surname | Hart |
| Given Name | Joseph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Erie |
| 1935 Residence (County) | Erie |
| Occupation | Clerk |
| Industry | Iron Ore Co. |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1200 |
| Highest Grade | Hs 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 Joseph Hart across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father James Hart (~0.92 confidence) and father James Hart (~0.92 confidence) and mother Mary Hart (~0.92 confidence) and mother Mary Hart (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Hart
b. ~1875
Source father
● Household
· direct · ~0.92
Father
James Hart
b. ~1875
Source father
● Household
· direct · ~0.92
Mother
Mary Hart
b. ~1875
Source mother
● Household
· direct · ~0.92
Mother
Mary Hart
b. ~1875
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Joseph Hart
Son · 1940 · age 21 · b. ~1919 · Pennsylvania
★ You are viewing this record
Sibling
James Hart
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Hart
Sibling · 1940 · age 41
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Hart
Sibling · 1940 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Laura Hart
Sibling · 1940 · age 16
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 — Erie-County, Pennsylvania
Open full size
1940 US Federal Census — Erie-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03650-00366)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Ruth Crawford | 23 | Wife | Teacher | Minnesota |
| 42 | Kathryn Betts | 38 | Head | Teacher | Pennsylvania |
| 43 | Jacqueline Betts | 8 | Daughter | — | Pennsylvania |
| 44 | Thomas Betts | 4 | Son | — | Pennsylvania |
| 45 | Laura Morgan | 73 | Lodger | — | Wales |
| 46 | Elizabeth Patterson | 60 | Lodger | — | Minnesota |
| 47 | Frank Balkovic | 32 | Lodger | — | Pennsylvania |
| 48 | James Hart | 65 | Head | — | Pennsylvania |
| 49 | Mary Hart | 65 | Wife | — | Pennsylvania |
| 50 | John Hart | 41 | Son | Interviewer | Pennsylvania |
| 51 | Helen Hart | 27 | Daughter | Operator | Pennsylvania |
| 52 | James Hart | 25 | Son | Inspector | Pennsylvania |
| 53 | Joseph Hart THIS PERSON | 21 | Son | Clerk | Pennsylvania |
| 54 | Laura Hart | 16 | Daughter | — | Pennsylvania |
| 55 | Regina Bofonier | 63 | Head | — | Austria |
| 56 | John Bofonier | 36 | Son | Salesman | Pennsylvania |
| 57 | Dorothy Bofonier | 34 | Daughter-in-law | — | Canada English |
| 58 | Harold D. Quist | 46 | Head | Fireman | Pennsylvania |
| 59 | Hazel Quist | 47 | Wife | — | Pennsylvania |
| 60 | Mildred Quist | 19 | Daughter | — | Pennsylvania |
| 61 | Roberta Quist | 18 | Daughter | — | Pennsylvania |
| 62 | Cora Quist | 68 | Mother | — | Pennsylvania |
| 63 | Adam Knepper | 52 | Head | Pattern Maker | Pennsylvania |
| 64 | Elizabeth Knepper | 53 | Wife | — | Pennsylvania |
| 65 | Margaret Knepper | 28 | Daughter | Stenographer | Pennsylvania |
| 66 | Gilbert Knepper | 23 | Son | Checker | Pennsylvania |
| 67 | Richard Knepper | 19 | Son | — | Pennsylvania |
| 68 | Virginia Knepper | 14 | Daughter | — | Pennsylvania |
| 69 | Foster C. Palmer | 60 | Head | Pattern Maker | Ohio |
| 70 | Lenore Palmer | 61 | Wife | — | Pennsylvania |
| 71 | Charles Mong | 50 | Head | Pattern Maker | Ohio |
| 72 | Harriet Mong | 50 | Wife | — | Ohio |
| 73 | Winifred Mong | 25 | Daughter | Teacher | Pennsylvania |
| 74 | Lewis Due | 41 | Head | Salesman | Pennsylvania |
| 75 | Clara Due | 41 | Wife | — | Pennsylvania |
| 76 | Dorothy Due | 20 | Daughter | Clerk | Pennsylvania |
| 77 | Robert Due | 17 | Son | — | Pennsylvania |
| 78 | David Anderson | 30 | Head | Production Clerk | Pennsylvania |
| 79 | Charlotte Anderson | 31 | Wife | Teacher | Pennsylvania |
| 80 | Myrtle Mcgloin | 57 | Mother-in-law | Clerk | Canada English |
Related Census Records
Pedigree Summary
Joseph + 4 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)