HT
Helen Thompson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this Helen Thompson across the 1920, 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Joseph & Joseph — first a daughter (b.~1919), then head of a 5-person household.
Age 21
b. ~1919
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Thompson |
| Given Name | Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston city |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Occupation | Maid |
| Industry | NYA |
| Class of Worker | GW |
| Hours Worked | 13 |
| Income (1939) | 220 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Maid |
| Township / Ward | Boston City |
| 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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Helen | Age | Birth yr |
|---|---|---|---|---|
| Blanche Thompson | Daughter | — | 24 | ~1916 |
| Helen Thompson | Daughter | — | 21 | ~1919 |
| Joseph Thompson | Head | — | 60 | ~1880 |
| Joseph Thompson | Son | — | 25 | ~1915 |
| Fred Thompson | Son | — | 22 | ~1918 |
Census Appearances
1920
Suffolk, Massachusetts
Daughter, age 1
Suffolk, Massachusetts · implied b. ~1919 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Virginia |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Suffolk, Massachusetts
Daughter, age 11
Suffolk, Massachusetts · implied b. ~1919 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Daughter, age 21
Suffolk-County, Massachusetts · implied b. ~1919 — 5 household members
| Surname | Thompson |
| Given Name | Helen |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston city |
| 1935 Residence (County) | Suffolk |
| Occupation | Maid |
| Industry | NYA |
| Class of Worker | GW |
| Hours Worked | 13 |
| Income (1939) | 220 |
| Highest Grade | H 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 Helen Thompson across 3 US Census years (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 father George Thompson (~0.92 confidence) and mother Rose Thompson (~0.92 confidence) and mother Anna Thompson (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Joseph Thompson
b. ~1879
Source father
● Household
· direct · ~0.92
Father
Joseph Thompson
b. ~1880
Source father
● Household
· direct · ~0.92
Father
George Thompson
b. ~1888
Source father
● Household
· direct · ~0.92
Mother
Rose Thompson
b. ~1890
Source mother
● Household
· direct · ~0.92
Mother
Anna Thompson
b. ~1891
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Helen Thompson
Daughter · 1940 · age 21 · b. ~1919 · Massachusetts
★ You are viewing this record
Sibling
Fred Thompson
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Blanche Thompson
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Thompson
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 — 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-t0627-01663-00066)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | William Paiva | 24 | Son | — | Massachusetts |
| 42 | Francis Paiva | 10 | Son | — | Massachusetts |
| 43 | Clementine Paiva | 7 | Daughter | — | Massachusetts |
| 44 | Rose Marie Paiva | 5 | Daughter | — | Massachusetts |
| 45 | Charles Paiva | 1 | Daughter | — | Massachusetts |
| 46 | Samuel P Cox | 30 | Head | Laborer | Antigua, BWI |
| 47 | Stanley A Cox | 3 | Son | — | Massachusetts |
| 48 | Lillian D Cox | 23 | Daughter | Waitress | Connecticut |
| 49 | Rosamond Reid | 32 | Daughter | Waitress | Massachusetts |
| 50 | Arthur B Reid | 9 | Nephew | — | Massachusetts |
| 51 | Lillian C Reid | 7 | Niece | — | Massachusetts |
| 52 | Joseph Thompson | 60 | Head | Chauffeur | Massachusetts |
| 53 | Joseph Jr Thompson | 25 | Son | Chain Feeder | Massachusetts |
| 54 | Blanche Thompson | 24 | Daughter | Mothers Helper | Massachusetts |
| 55 | Fred Thompson | 22 | Son | Truck Driver | Massachusetts |
| 56 | Helen Thompson THIS PERSON | 21 | Daughter | Maid | Massachusetts |
| 57 | Charles W Brooks | 62 | Head | — | Virginia |
| 58 | James Brown | 78 | Head | — | Virginia |
| 59 | Joseph Walker | 79 | Head | — | Virginia |
| 60 | Blanche Nowell | 60 | Head | — | Virginia |
| 61 | Irene A Power | 35 | Head | Nurse | Canada |
| 62 | Barbara Power | 8 | Daughter | — | Massachusetts |
| 63 | Mabel L Cole | 37 | Head | — | Massachusetts |
| 64 | Edward M Cole | 16 | Son | Messenger | Massachusetts |
| 65 | Boston S Defoe | 33 | Head | Clerk-Shipping | Massachusetts |
| 66 | Mary A Defoe | 26 | Wife | — | Massachusetts |
| 67 | Charlie D Defoe | 10 | Son | — | Massachusetts |
| 68 | Constance Defoe | 6 | Daughter | — | Massachusetts |
| 69 | Evelyn H Defoe | 3 | Daughter | — | Massachusetts |
| 70 | Josephine H Defoe | 0 | Daughter | — | Massachusetts |
| 71 | Nathan James | 59 | Head | Longshoreman | Cape Verde Island |
| 72 | Fannie James | 45 | Wife | — | Virginia |
| 73 | James P Young | 32 | Lodger | — | Tennessee |
| 74 | Fabiana S Debrito | 51 | Lodger | Brick Layer | Africa |
| 75 | Manuel Gomes | 45 | Lodger | Brick Layer | Africa |
| 76 | Domingo Hernandez | 22 | Head | Roping Boy | Massachusetts |
| 77 | Julia B Hernandez | 22 | Wife | — | Massachusetts |
| 78 | Vurdy A Hernandez | 2 | Daughter | — | Massachusetts |
| 79 | Ann Hernandez | 1 | Daughter | — | Massachusetts |
| 80 | Joyce Hernandez | 0 | Daughter | — | Massachusetts |
Pedigree Summary
Helen + 3 siblings
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)