JH
James Hart — 1940 US Census Record
Model Tree available1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this James Hart across the 1920, 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed), with identified parents James & James — first a son (b.~1918), then head of a 7-person household.
Age 22
b. ~1918
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Hart |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Occupation | Clerk Typist |
| Industry | Rubber Company |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1000 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Clerk Typist |
| Township / Ward | Boston City |
| Est. Birth Year | ~1918 |
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 James | Age | Birth yr |
|---|---|---|---|---|
| Mary Hart | Daughter | — | 15 | ~1925 |
| Teresa Hart | Daughter | — | 12 | ~1928 |
| Margaret Hart | Daughter | — | 10 | ~1930 |
| James Hart | Head | — | 54 | ~1886 |
| James Hart | Son | — | 22 | ~1918 |
| John Hart | Son | — | 20 | ~1920 |
| Nora Hart | Spouse | — | 44 | ~1896 |
Census Appearances
1920
Suffolk, Massachusetts
Son, age 2
Suffolk, Massachusetts · implied b. ~1918 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hart |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Suffolk, Massachusetts
Son, age 12
Suffolk, Massachusetts · implied b. ~1918 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hart |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Son, age 22
Suffolk-County, Massachusetts · implied b. ~1918 — 7 household members
| Surname | Hart |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Occupation | Clerk Typist |
| Industry | Rubber Company |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1000 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| 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 James 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 father James Hart (~0.92 confidence) and mother Nora Hart (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Hart
b. ~1886
Source father
● Household
· direct · ~0.92
Father
James Hart
b. ~1890
Source father
● Household
· direct · ~0.92
Father
James Hart
b. ~1891
Source father
● Household
· direct · ~0.92
Mother
Nora Hart
b. ~1896
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Hart
Son · 1940 · age 22 · b. ~1918 · Massachusetts
★ You are viewing this record
Sibling
Mary Hart
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Hart
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Hart
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Teresa Hart
Sibling · 1940 · age 12
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 — Suffolk-County, Massachusetts
Open full size
1940 US Federal Census — Suffolk-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01668-00460)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ellen L Gallagher | 55 | Wife | Cook | Irish Free State |
| 2 | Frank Gallagher | 30 | Son | Clerk File | Massachusetts |
| 3 | Joseph Gallagher | 23 | Son | Clerk Billing | Massachusetts |
| 4 | Paul Gallagher | 19 | Son | Clerk Billing | Massachusetts |
| 5 | Theodore Anderson | 57 | Head | Waiter | Greece |
| 6 | Teresa Anderson | 46 | Wife | — | Turkey |
| 7 | James Anderson | 24 | Son | Clerk Cashier | Massachusetts |
| 8 | Charles Anderson | 23 | Son | Chauffeur | Massachusetts |
| 9 | Fred Anderson | 21 | Son | Attendant | Massachusetts |
| 10 | Arthur Anderson | 19 | Son | New Worker | Massachusetts |
| 11 | Cleo Anderson | 15 | Daughter | — | Massachusetts |
| 12 | Stella Anderson | 13 | Daughter | — | Massachusetts |
| 13 | Anna Mackinnon | 22 | Daughter | — | Massachusetts |
| 14 | Mary E Martins | 69 | Head | — | Massachusetts |
| 15 | Margaret T Martins | 66 | Sister | — | Massachusetts |
| 16 | Catherine A Martins | 53 | Sister | Stitcher | Massachusetts |
| 17 | James Hart | 54 | Head | Mechanic | Massachusetts |
| 18 | Nora A Hart | 44 | Wife | — | Massachusetts |
| 19 | James Hart THIS PERSON | 22 | Son | Clerk Typist | Massachusetts |
| 20 | John Hart | 20 | Son | Clerk Typist | Massachusetts |
| 21 | Mary Hart | 15 | Daughter | — | Massachusetts |
| 22 | Teresa Hart | 12 | Daughter | — | Massachusetts |
| 23 | Margaret Hart | 10 | Daughter | — | Massachusetts |
| 24 | James Mcfarland | 40 | Head | Receiving Clerk | Irish Free State |
| 25 | Mary Mcfarland | 38 | Wife | Waitress | Irish Free State |
| 26 | Maria J Stapleton | 70 | Head | — | Canada English |
| 27 | Margaret Mary Stapleton | 35 | Daughter | Typist | Montana |
| 28 | Thomas Sheehan | 45 | Head | Laborer | Irish Free State |
| 29 | Margaret D Sheehan | 33 | Wife | — | Irish Free State |
| 30 | John Sheehan | 2 | Son | — | Massachusetts |
| 31 | John Kelleher | 39 | Roomer | Laundry Worker | Irish Free State |
| 32 | Hugh Doherty | 34 | Head | Carpenters Helper | Irish Free State |
| 33 | Ellen D Doherty | 31 | Wife | — | Irish Free State |
| 34 | Sarah A Doherty | 5 | Daughter | — | Massachusetts |
| 35 | Helen V Doherty | 4 | Daughter | — | Massachusetts |
| 36 | Alice M Doherty | 1 | Daughter | — | Massachusetts |
| 37 | John F Moran | 45 | Head | Receiver | Irish Free State |
| 38 | Catherine Moran | 43 | Wife | — | Massachusetts |
| 39 | John J Moran | 7 | Son | — | Massachusetts |
| 40 | Patrick Higgins | 35 | Roomer | Porter | Irish Free State |
Pedigree Summary
James + 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)