MH
Margaret Hart — 1940 US Census Record
Model Tree available1940 United States Federal Census · Washington-County, Pennsylvania
Our Model Tree links this Margaret Hart across the 1920, 1930 and 1940 US Censuses in Washington-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents John & John — first a daughter (b.~1912), then head of a 4-person household.
Age 28
b. ~1912
Female
Daughter
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Washington-County, Pennsylvania |
| Surname | Hart |
| Given Name | Margaret M |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | East Washington Boro |
| 1935 Residence (County) | Washington |
| Additional Details | |
| Occupation | Music Teacher |
| Industry | Own Studio |
| Class of Worker | OA |
| Hours Worked | 6 |
| Income (1939) | 0 |
| Highest Grade | C-4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Teacher |
| Township / Ward | East Washington Boro |
| Est. Birth Year | ~1912 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Margaret | Age | Birth yr |
|---|---|---|---|---|
| Agnes Hart | Spouse | — | 50 | ~1890 |
| John Hart | Head | — | 68 | ~1872 |
| Margaret Hart | Daughter | — | 28 | ~1912 |
| Alice Hart | Daughter | — | 25 | ~1915 |
Census Appearances
1920
Washington, Pennsylvania
Daughter, age 9
Washington, Pennsylvania · implied b. ~1911 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hart |
| Given Name | Margaret M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Washington, Pennsylvania
Daughter, age 19
Washington, Pennsylvania · implied b. ~1911 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hart |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| 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
Washington-County, Pennsylvania
Daughter, age 28
Washington-County, Pennsylvania · implied b. ~1912 — 4 household members
| Surname | Hart |
| Given Name | Margaret M |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | East Washington Boro |
| 1935 Residence (County) | Washington |
| Occupation | Music Teacher |
| Industry | Own Studio |
| Class of Worker | OA |
| Hours Worked | 6 |
| Income (1939) | 0 |
| Highest Grade | C-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 Margaret Hart across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Hart (~0.92 confidence) and father John Hart (~0.92 confidence) and father John Hart (~0.92 confidence) and mother Agnes Hart (~0.92 confidence) and mother Agnes Hart (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Hart
b. ~1872
Source father
● Household
· direct · ~0.92
Father
John Hart
b. ~1873
Source father
● Household
· direct · ~0.92
Father
John Hart
b. ~1872
Source father
● Household
· direct · ~0.92
Mother
Agnes Hart
b. ~1870
Source mother
● Household
· direct · ~0.92
Mother
Agnes Hart
b. ~1890
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Margaret Hart
Daughter · 1940 · age 28 · b. ~1912 · Pennsylvania
★ You are viewing this record
Sibling
Alice Hart
Sibling · 1940 · age 25
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 — Washington-County, Pennsylvania
Open full size
1940 US Federal Census — Washington-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03623-00336)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Joe Sullivan | 60 | Wife | — | Pennsylvania |
| 42 | Joseph Jr Sullivan | 26 | Son | — | Pennsylvania |
| 43 | Anna M Slicker | 58 | Head | Tipstaff | Pennsylvania |
| 44 | Frank B Post | 67 | Head | Proprietor | Pennsylvania |
| 45 | Alice G Post | 60 | Wife | — | Pennsylvania |
| 46 | Lewis Crumrine | 71 | Head | — | Pennsylvania |
| 47 | Agnes Crumrine | 67 | Wife | — | Pennsylvania |
| 48 | Ern K Weller | 60 | Head | Photographer Proprietor | Pennsylvania |
| 49 | Ella Maclaughlin | 50 | Sister-in-law | — | Pennsylvania |
| 50 | Jean | 26 | Sister-in-law | Teacher Of Beauty Culture | Pennsylvania |
| 51 | William H Mee | 69 | Head | Lawyer | Pennsylvania |
| 52 | Florence Mee | 51 | Wife | — | Pennsylvania |
| 53 | Caroline Gifford | 81 | Head | — | Pennsylvania |
| 54 | Gertrude Gifford | 57 | Daughter | Teacher | Pennsylvania |
| 55 | John C Hart | 68 | Head | Post Office Clerk | Pennsylvania |
| 56 | Agnes Hart | 50 | Wife | Music Teacher | Pennsylvania |
| 57 | Margaret M Hart THIS PERSON | 28 | Daughter | Music Teacher | Pennsylvania |
| 58 | Alice G Hart | 25 | Daughter | — | Pennsylvania |
| 59 | Charles Minton | 56 | Head | Manager | Pennsylvania |
| 60 | Midge Minton | 46 | Wife | — | Missouri |
| 61 | Trida Minton | 16 | Daughter | — | Pennsylvania |
| 62 | Clayton Davidson | 67 | Head | — | Pennsylvania |
| 63 | Samuel Moriarty | 35 | Son-in-law | Civil Engineer | Pennsylvania |
| 64 | Elizabeth Moriarty | 36 | Daughter | — | Pennsylvania |
| 65 | Mary E Wilson | 62 | Head | Librarian | Pennsylvania |
| 66 | Laura Robb | 50 | Partner | Teacher | Pennsylvania |
| 67 | Herbert Martin | 30 | Head | Accountant | Pennsylvania |
| 68 | Bernice Martin | 30 | Wife | — | Pennsylvania |
| 69 | Barbara Martin | 1 | Daughter | — | New York |
| 70 | Sarah B Davis | 55 | Head | — | Pennsylvania |
| 71 | Ada N Davis | 52 | Sister | — | Pennsylvania |
| 72 | Thomas J Haugfett | 58 | Head | Postmaster | Pennsylvania |
| 73 | Elizabeth Haugfett | 54 | Wife | — | Pennsylvania |
| 74 | Thomas J Jr Haugfett | 28 | Son | Insurance Underwriter | Pennsylvania |
| 75 | Louis Cohen | 58 | Head | Proprietor Owner | Russia |
| 76 | Annie G Cohen | 53 | Wife | — | Russia |
| 77 | Samuel Cohen | 25 | Son | Optometrist | Pennsylvania |
| 78 | Rose S Cohen | 25 | Daughter | Clerk | Pennsylvania |
| 79 | Theodore Fevitz | 42 | Lodger | Manager Retail | Poland |
| 80 | Martha Brownlee | 65 | Head | — | Pennsylvania |
Pedigree Summary
Margaret + 1 sibling
Gen 1 · 5 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)