MH
Margaret Hart — 1940 US Census Record
Model Tree available1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Margaret Hart across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Mary & Mary — first a daughter (b.~1898), then head of a 3-person household.
Age 42
b. ~1898
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Hart |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 42 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Stoneham |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | Stenographer |
| Industry | Custom House |
| Class of Worker | GW |
| Hours Worked | 44 |
| Income (1939) | 253 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same house |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Stenographer |
| Township / Ward | Stoneham |
| Est. Birth Year | ~1898 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Margaret | Age | Birth yr |
|---|---|---|---|---|
| Ellie Hart | Daughter | — | 53 | ~1887 |
| Mary Hart | Head | — | 86 | ~1854 |
| Margaret Hart | Daughter | — | 42 | ~1898 |
Census Appearances
1920
Middlesex, Massachusetts
Daughter, age 21
Middlesex, Massachusetts · implied b. ~1899 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hart |
| Given Name | Margaret E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Stenographer |
| Industry | Custom House |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Daughter, age 32
Middlesex, Massachusetts · implied b. ~1898 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hart |
| Given Name | Margaret E. |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Occupation | Stenographer |
| Industry | Custom House |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Daughter, age 42
Middlesex-County, Massachusetts · implied b. ~1898 — 3 household members
| Surname | Hart |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 42 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Stoneham |
| 1935 Residence (County) | Middlesex |
| Occupation | Stenographer |
| Industry | Custom House |
| Class of Worker | GW |
| Hours Worked | 44 |
| Income (1939) | 253 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same house |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
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: mother Mary Hart (~0.92 confidence) and mother Mary Hart (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Mary Hart
b. ~1854
Source mother
● Household
· direct · ~0.92
Mother
Mary Hart
b. ~1855
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Margaret Hart
Daughter · 1940 · age 42 · b. ~1898 · Massachusetts
★ You are viewing this record
Sibling
Ellie Hart
Sibling · 1940 · age 53
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 — Middlesex-County, Massachusetts
Open full size
1940 US Federal Census — Middlesex-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01617-00594)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Catherine T Driscoll | 27 | Daughter | File Clerk | Mass. |
| 2 | Joseph J Driscoll | 25 | Daughter | Chauffeur | Mass. |
| 3 | Francis J Driscoll | 21 | Daughter | Shipping Clerk | Mass. |
| 4 | Rufus L Gray | 77 | Head | — | Mass. |
| 5 | Padilla W Gray | 54 | Son | Roofer | Mass. |
| 6 | Ida M Walton | 68 | Housekeeper | Housekeeper | Mass. |
| 7 | Elizabeth Menges | 68 | Head | — | Mass. |
| 8 | Ethel Menges | 35 | Daughter | — | Mass. |
| 9 | Myrtle L Menges | 29 | Daughter | Stenographer | Mass. |
| 10 | James L Menges | 26 | Son | Research Work | Mass. |
| 11 | A. Duncan Clarke | 57 | Head | Salesman | Mass. |
| 12 | Alice Clarke | 59 | Wife | — | Mass. |
| 13 | Arthur W Clarke | 27 | Son | Chauffeur | Mass. |
| 14 | Thelma Clarke | 23 | Daughter | Stenographer | Mass. |
| 15 | Arthur White | 70 | Head | — | Mass. |
| 16 | Ella White | 82 | Wife | — | Mass. |
| 17 | Agnes Rafferty | 67 | Head | — | Mass. |
| 18 | Frank Rafferty | 33 | Head | Plumber | Massachusetts |
| 19 | Helen Rafferty | 31 | Wife | — | Massachusetts |
| 20 | Ann Marie Rafferty | 0 | Daughter | — | Winchester |
| 21 | Leslie C French | 48 | Head | Architect | Massachusetts |
| 22 | Helen M French | 46 | Wife | — | Massachusetts |
| 23 | William H French | 26 | Son | Salesman | Massachusetts |
| 24 | Gertrude French | 25 | Daughter | Teacher | Massachusetts |
| 25 | Leslie C. Jr French | 22 | Son | — | Massachusetts |
| 26 | Richard French | 16 | Son | — | Massachusetts |
| 27 | Henry J Hayes | 66 | Head | Paper Cutter | Massachusetts |
| 28 | Jennie Hayes | 63 | Wife | Office Clerk | Massachusetts |
| 29 | Mary Hart | 86 | Head | — | Irish Free State |
| 30 | Ellie Hart | 53 | Daughter | Supervisor | Massachusetts |
| 31 | Margaret Hart THIS PERSON | 42 | Daughter | Stenographer | Massachusetts |
| 32 | Arthur W Terry | 65 | Head | Advertising Agent | Massachusetts |
| 33 | Ola E Terry | 61 | Wife | — | Massachusetts |
| 34 | Alice H Smith | 64 | Lodger | — | Massachusetts |
| 35 | Howard A Bellows | 61 | Head | Optometrist | Canada English |
| 36 | Bessie Bellows | 62 | Wife | — | Mass. |
| 37 | Evelyn Bellows | 33 | Daughter | Stenographer | Mass. |
| 38 | Horace Bowser | 63 | Head | Librarian | Massachusetts |
| 39 | Grace Bowser | 50 | Wife | — | Maine |
| 40 | Edith M Patten | 71 | Mother-in-law | — | Maine |
Pedigree Summary
Margaret + 1 sibling
Gen 1 · 2 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)