DT
Dorothy Thompson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Dorothy Thompson across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents George & Helen — first a spouse (b.~1913), then head of a 5-person household.
Age 27
b. ~1913
Female
Spouse
Born: Massachusetts
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Thompson |
| Given Name | Dorothy M. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Medford city |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same Place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Medford City |
| Est. Birth Year | ~1913 |
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 Dorothy | Age | Birth yr |
|---|---|---|---|---|
| Carol Thompson | Daughter | — | 1 | ~1939 |
| Thomas Thompson | Head | — | 29 | ~1911 |
| Charles Thompson | Son | — | 2 | ~1938 |
| Warren Thompson | Son | — | 7 | ~1933 |
| Dorothy Thompson | Spouse | — | 27 | ~1913 |
Census Appearances
1920
Middlesex, Massachusetts
Daughter, age 6
Middlesex, Massachusetts · implied b. ~1914 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Dorothy |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Maine |
| Mother's Birthplace | Maine |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Daughter, age 16
Middlesex, Massachusetts · implied b. ~1914 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Dorothy G |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Maine |
| Mother's Birthplace | Maine |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Spouse, age 27
Middlesex-County, Massachusetts · implied b. ~1913 — 5 household members
| Surname | Thompson |
| Given Name | Dorothy M. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Medford city |
| 1935 Residence (County) | Middlesex |
| Class of Worker | 0 |
| 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 Dorothy Thompson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father George Thompson (~0.92 confidence) and mother Helen Thompson (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
George Thompson
b. ~1878
Source father
● Household
· direct · ~0.92
Mother
Helen Thompson
b. ~1880
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Dorothy Thompson
Spouse · 1940 · age 27 · b. ~1913 · Massachusetts
★ You are viewing this record
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-t0627-01608-00087)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mary D. Finlayson | 23 | Daughter | Box Maker | Massachusetts |
| 2 | John T. Norton | 63 | Lodger | Boiler Engineer | Maine |
| 3 | James Kerns | 75 | Lodger | — | Massachusetts |
| 4 | Harry Adrian | 40 | Head | Traveling Salesman | Armenia |
| 5 | Nevart Adrian | 35 | Wife | Music Teacher | Armenia |
| 6 | Shahan Adrian | 8 | Son | — | Massachusetts |
| 7 | Nurhan Adrian | 3 | Son | — | Massachusetts |
| 8 | Maria Morel | 63 | Head | — | Canada Fr |
| 9 | Raoul Morel | 37 | Son | Sheet Metal Wkr | Canada Fr |
| 10 | Harry Merrill | 51 | Head | Laborer | Massachusetts |
| 11 | Elizabeth Merrill | 51 | Wife | — | Massachusetts |
| 12 | James W. Berry | 28 | Head | Shipper | Massachusetts |
| 13 | Evelyn Berry | 24 | Wife | General Housework | Massachusetts |
| 14 | James Delaney | 69 | Head | — | Eire |
| 15 | Catherine Delaney | 64 | Wife | — | Eire |
| 16 | James J. Delaney | 34 | Son | Salesman | Massachusetts |
| 17 | Mary A. Delaney | 36 | Daughter | Secretary Steno | Massachusetts |
| 18 | Thomas P. Delaney | 33 | Son | Bus Driver | Massachusetts |
| 19 | Fred J. Whelan | 48 | Head | Fireman | Massachusetts |
| 20 | Mary Whelan | 48 | Wife | — | Massachusetts |
| 21 | Thomas Thompson | 29 | Head | Salesman | Massachusetts |
| 22 | Dorothy M. Thompson THIS PERSON | 27 | Wife | — | Massachusetts |
| 23 | Warren R. Thompson | 7 | Son | — | Massachusetts |
| 24 | Charles F. Thompson | 2 | Son | — | Massachusetts |
| 25 | Carol F. Thompson | 1 | Daughter | — | Massachusetts |
| 26 | William S. Croteau | 56 | Head | Salesman | Vermont |
| 27 | Mildred Croteau | 54 | Wife | — | Massachusetts |
| 28 | Robert Croteau | 21 | Son | Plaster Mixer | Massachusetts |
| 29 | Charles L. Croteau | 13 | Son | New Worker | Massachusetts |
| 30 | Lorraine Croteau | 12 | Daughter | — | Massachusetts |
| 31 | Andrew F. Cronin | 35 | Head | Painter House | Massachusetts |
| 32 | Mary C. Cronin | 35 | Wife | — | Massachusetts |
| 33 | Marie L. Cronin | 5 | Daughter | — | Massachusetts |
| 34 | George L. Searles | 45 | Head | Proprietor Lumber | Maine |
| 35 | Clara G. Searles | 45 | Wife | — | Massachusetts |
| 36 | Sally Searles | 4 | Daughter | — | Massachusetts |
| 37 | Patrick Molloy | 67 | Head | Laborer | Eire |
| 38 | Delia Molloy | 64 | Wife | — | Eire |
| 39 | Patrick Molloy | 27 | Son | Mechanic | Massachusetts |
| 40 | Winifred Molloy | 24 | Daughter | Branding | Massachusetts |
Pedigree Summary
Dorothy
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)