HT
Helen Thompson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Plymouth-County, Massachusetts
Our Model Tree links this Helen Thompson across the 1910, 1920, 1930 and 1940 US Censuses in Plymouth-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Joseph & Joseph — first a daughter (b.~1908), then head of a 4-person household.
Age 32
b. ~1908
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Plymouth-County, Massachusetts |
| Surname | Thompson |
| Given Name | Helen L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Hingham town |
| 1935 Residence (County) | Plymouth |
| Additional Details | |
| Occupation | Private Secretary |
| Industry | Broker |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 1500 |
| Highest Grade | H-4 |
| 1935 Residence | Same House |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Private Secretary |
| Township / Ward | Hingham Town |
| Est. Birth Year | ~1908 |
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 Helen | Age | Birth yr |
|---|---|---|---|---|
| Helen Thompson | Daughter | — | 32 | ~1908 |
| Joseph Thompson | Head | — | 65 | ~1875 |
| Francis Thompson | Son | — | 37 | ~1903 |
| Mary Thompson | Spouse | — | 66 | ~1874 |
Census Appearances
1910
Plymouth, Massachusetts
Daughter, age 2
Plymouth, Massachusetts · implied b. ~1908 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Helen |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | none |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1920
Plymouth, Massachusetts
Daughter, age 12
Plymouth, Massachusetts · implied b. ~1908 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Helen L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Plymouth, Massachusetts
Daughter, age 22
Plymouth, Massachusetts · implied b. ~1908 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Helen D. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Secretary |
| Industry | Office |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Plymouth-County, Massachusetts
Daughter, age 32
Plymouth-County, Massachusetts · implied b. ~1908 — 4 household members
| Surname | Thompson |
| Given Name | Helen L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Hingham town |
| 1935 Residence (County) | Plymouth |
| Occupation | Private Secretary |
| Industry | Broker |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 1500 |
| Highest Grade | H-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 Helen Thompson across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Joseph Thompson (~0.92 confidence) and father Joseph Thompson (~0.92 confidence) and mother Mary Thompson (~0.92 confidence) and mother Mary Thompson (~0.92 confidence) and father Joseph Thompson (~0.92 confidence) and mother Mary Thompson (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Joseph Thompson
b. ~1873
Source father
● Household
· direct · ~0.92
Father
Joseph Thompson
b. ~1874
Source father
● Household
· direct · ~0.92
Mother
Mary Thompson
b. ~1874
Source mother
● Household
· direct · ~0.92
Mother
Mary Thompson
b. ~1874
Source mother
● Household
· direct · ~0.92
Father
Joseph Thompson
b. ~1875
Source father
● Household
· direct · ~0.92
Mother
Mary Thompson
b. ~1875
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Helen Thompson
Daughter · 1940 · age 32 · b. ~1908 · Massachusetts
★ You are viewing this record
Sibling
Francis Thompson
Sibling · 1940 · age 37
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 — Plymouth-County, Massachusetts
Open full size
1940 US Federal Census — Plymouth-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01638-00270)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | William E. Doran | 32 | Head | Police Officer | Massachusetts |
| 2 | Cynthia Doran | 29 | Wife | — | Massachusetts |
| 3 | Robert W. Doran | 5 | Son | — | Massachusetts |
| 4 | Paul R. Doran | 3 | Son | — | Massachusetts |
| 5 | James R. Campbell | 39 | Head | — | Massachusetts |
| 6 | Margaret Campbell | 37 | Wife | — | Massachusetts |
| 7 | Margaret E. Campbell | 7 | Daughter | — | Massachusetts |
| 8 | Mary Louise Campbell | 6 | Daughter | — | Massachusetts |
| 9 | James R. Jr. Campbell | 4 | Son | — | Massachusetts |
| 10 | Bryan J. Campbell | 0 | Son | — | Massachusetts |
| 11 | Susie Litchfield | 72 | Head | — | Massachusetts |
| 12 | Samuel Litchfield | 76 | Brother | — | Massachusetts |
| 13 | Carrie Litchfield | 80 | Wife | — | Massachusetts |
| 14 | Emilie E. Hodgkins | 57 | Head | Operator | Wales |
| 15 | Frank W. Hodgkins | 69 | Husband | — | Massachusetts |
| 16 | Elizabeth S. Hodgkins | 25 | Daughter | Estimator | Massachusetts |
| 17 | Stephen Tucker Wright | 25 | Lodger | — | Canada-English |
| 18 | Mary W. Wright | 1 | Wife | — | Massachusetts |
| 19 | Margaret M. Souther | 75 | Lodger | — | Canada-English |
| 20 | Mildred Pratt | 75 | Lodger | — | Massachusetts |
| 21 | Harriet M. Mulvey | 67 | Lodger | — | Canada-English |
| 22 | Mary C. Paige | 81 | Lodger | — | Massachusetts |
| 23 | Henry Swedman | 79 | Lodger | — | Massachusetts |
| 24 | Kenneth Woodward | 37 | Lodger | Teacher | Maine |
| 25 | Charles E. Butterman | 22 | Head | — | Massachusetts |
| 26 | Laura S. Little | 77 | Partner | — | Massachusetts |
| 27 | Lucy R. Harris | 46 | Head | Teacher | Massachusetts |
| 28 | Walter Harris | 52 | Brother | Painter | Massachusetts |
| 29 | Robert N. Jackson | 31 | Head | Court Officer | Massachusetts |
| 30 | Rita M. Jackson | 31 | Wife | — | Massachusetts |
| 31 | Joseph Jr. Barney | 31 | Head | Bus Driver | Massachusetts |
| 32 | Doris Barney | 30 | Wife | — | Massachusetts |
| 33 | William Barney | 10 | Son | — | Massachusetts |
| 34 | Richard J. Barney | 6 | Son | — | Massachusetts |
| 35 | Joseph D. Thompson | 65 | Head | Office Clerk | Massachusetts |
| 36 | Mary Thompson | 66 | Wife | — | Massachusetts |
| 37 | Francis J. Thompson | 37 | Son | Telephone Supervisor | Massachusetts |
| 38 | Helen L. Thompson THIS PERSON | 32 | Daughter | Private Secretary | Massachusetts |
| 39 | John Joyce | 69 | Head | — | Massachusetts |
| 40 | Margaret Joyce | 64 | Wife | — | Free State |
Related Census Records
Pedigree Summary
Helen + 1 sibling
Gen 1 · 6 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)