RT
Richard Thompson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Richard Thompson across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Ernest — first a son (b.~1916), then head of a 9-person household.
Age 24
b. ~1916
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Thompson |
| Given Name | Richard C |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Medford City |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | Truck Driver |
| Industry | Retail Fuel |
| Class of Worker | PW |
| Hours Worked | 26 |
| Income (1939) | 380 |
| Highest Grade | H-4 |
| 1935 Residence | Same Place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Truck Driver |
| Township / Ward | Medford City |
| Est. Birth Year | ~1916 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Richard | Age | Birth yr |
|---|---|---|---|---|
| Norma Thompson | Daughter | — | 7 | ~1933 |
| Gloria Thompson | Daughter | — | 15 | ~1925 |
| Thelma Thompson | Daughter | — | 9 | ~1931 |
| Ernest Thompson | Head | — | 45 | ~1895 |
| Nellie Clark | Other | — | 74 | ~1866 |
| Louis Clark | Other | — | 74 | ~1866 |
| Theodore Thompson | Son | — | 21 | ~1919 |
| Richard Thompson | Son | — | 24 | ~1916 |
| Robert Thompson | Son | — | 19 | ~1921 |
Census Appearances
1920
Middlesex, Massachusetts
Other, age 3
Middlesex, Massachusetts · implied b. ~1917 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Richard C |
| Relationship to Head | Grandson |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Other, age 14
Middlesex, Massachusetts · implied b. ~1916 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Richard C. |
| Relationship to Head | grandson |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Son, age 24
Middlesex-County, Massachusetts · implied b. ~1916 — 9 household members
| Surname | Thompson |
| Given Name | Richard C |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Medford City |
| 1935 Residence (County) | Middlesex |
| Occupation | Truck Driver |
| Industry | Retail Fuel |
| Class of Worker | PW |
| Hours Worked | 26 |
| Income (1939) | 380 |
| 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 Richard Thompson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Ernest Thompson (~0.92 confidence). The pedigree spans 1 generation with 1 identified ancestor.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Ernest Thompson
b. ~1895
Source father
● Household
· direct · ~0.92
This person
Anchor record
Richard Thompson
Son · 1940 · age 24 · b. ~1916 · Massachusetts
★ You are viewing this record
Sibling
Robert Thompson
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gloria Thompson
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thelma Thompson
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Theodore Thompson
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Norma Thompson
Sibling · 1940 · age 7
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-t0627-01611-00292)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ernest Thompson | 45 | Head | Foreman | Massachusetts |
| 2 | Richard C Thompson THIS PERSON | 24 | Son | Truck Driver | Massachusetts |
| 3 | Theodore M Thompson | 21 | Son | Secretarial | Massachusetts |
| 4 | Robert K Thompson | 19 | Son | Superintendent | Massachusetts |
| 5 | Gloria K Thompson | 15 | Daughter | — | Massachusetts |
| 6 | Thelma V Thompson | 9 | Daughter | — | Massachusetts |
| 7 | Norma J Thompson | 7 | Daughter | — | Massachusetts |
| 8 | Nellie M Clark | 74 | Mother-in-law | — | Canada |
| 9 | Louis A Clark | 74 | Brother-in-law | — | Maine |
| 10 | William Farrington | 49 | Head | Bagger | Massachusetts |
| 11 | Sarah Farrington | 44 | Wife | — | Massachusetts |
| 12 | William Farrington | 17 | Son | — | Massachusetts |
| 13 | Paul Farrington | 14 | Son | — | Massachusetts |
| 14 | Joseph Farrington | 10 | Son | — | Massachusetts |
| 15 | Margaret Farrington | 7 | Daughter | — | Massachusetts |
| 16 | Lawrence J Murray | 42 | Head | Machinist | Massachusetts |
| 17 | Ruth E Murray | 43 | Wife | — | Massachusetts |
| 18 | Lawrence J Jr Murray | 20 | Son | Chauffeur | Massachusetts |
| 19 | Marie Murray | 15 | Daughter | — | Massachusetts |
| 20 | Robert D Murray | 14 | Son | — | Massachusetts |
| 21 | Walter S Riley | 35 | Head | Foreman | Massachusetts |
| 22 | Ruth Riley | 32 | Wife | — | Massachusetts |
| 23 | Richard Riley | 7 | Son | — | Massachusetts |
| 24 | Nicholas Calandriello | 53 | Head | Barber | Italy |
| 25 | William Calandriello | 22 | Son | Cutter | Massachusetts |
| 26 | Alice Calandriello | 20 | Daughter | Bookkeeper | Massachusetts |
| 27 | Helen Calandriello | 19 | Daughter | Machine Operator | Massachusetts |
| 28 | Adria Macaron | 42 | Brother-in-law | Barber | Italy |
| 29 | George Twombly | 47 | Head | Clerk | Massachusetts |
| 30 | Ada Twombly | 43 | Wife | — | Massachusetts |
| 31 | Edward O Pierro | 41 | Head | Broker | Italy |
| 32 | Ada Pierro | 40 | Wife | — | Italy |
| 33 | Adela Pierro | 17 | Daughter | — | Massachusetts |
| 34 | Edward J Hale | 63 | Head | Painter | Massachusetts |
| 35 | Margaret C Hale | 61 | Wife | — | Massachusetts |
| 36 | Winifred Hale | 34 | Daughter | Stenographer | Massachusetts |
| 37 | John J Hale | 25 | Son | Electric Welder | Massachusetts |
| 38 | William H Hale | 23 | Son | Mechanic | Massachusetts |
| 39 | Joseph Pheen | 46 | Head | Watchman | Portugal |
| 40 | Amelia Pheen | 70 | Wife | — | Portugal |
Pedigree Summary
Richard + 5 siblings
Gen 1 · 1 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)