MT
Mildred Thompson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Mildred Thompson across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Annie & Lester — first a daughter (b.~1919), then head of a 3-person household.
Age 21
b. ~1919
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Thompson |
| Given Name | Mildred |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Medford City |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | Domestic |
| Industry | Private Family |
| Class of Worker | PW |
| Hours Worked | 54 |
| Income (1939) | 220 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Domestic |
| Township / Ward | Medford 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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mildred | Age | Birth yr |
|---|---|---|---|---|
| Mildred Thompson | Daughter | — | 21 | ~1919 |
| Lester Thompson | Head | — | 64 | ~1876 |
| Annie Thompson | Spouse | — | 70 | ~1870 |
Census Appearances
1920
Middlesex, Massachusetts
Daughter, age
Middlesex, Massachusetts · implied b. ~1920 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Mildred |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Vermont |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Daughter, age 11
Middlesex, Massachusetts · implied b. ~1919 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Mildred |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Vermont |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Daughter, age 21
Middlesex-County, Massachusetts · implied b. ~1919 — 3 household members
| Surname | Thompson |
| Given Name | Mildred |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Medford City |
| 1935 Residence (County) | Middlesex |
| Occupation | Domestic |
| Industry | Private Family |
| Class of Worker | PW |
| Hours Worked | 54 |
| Income (1939) | 220 |
| 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 Mildred Thompson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Annie Thompson (~0.92 confidence) and father Lester Thompson (~0.92 confidence) and mother Annie Thompson (~0.92 confidence) and mother Fanny Thompson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Annie Thompson
b. ~1870
Source mother
● Household
· direct · ~0.92
Father
Lester Thompson
b. ~1876
Source father
● Household
· direct · ~0.92
Mother
Annie Thompson
b. ~1877
Source mother
● Household
· direct · ~0.92
Mother
Fanny Thompson
b. ~1877
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mildred Thompson
Daughter · 1940 · age 21 · b. ~1919 · 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-t0627-01611-00278)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Kathleen E Howard | 24 | Daughter | Teacher | Massachusetts |
| 2 | Geraldine H Howard | 25 | Daughter | Librarian | Massachusetts |
| 3 | Mary E Johnson | 60 | Lodger | Seamstress | California |
| 4 | Robert E Wrenn | 41 | Head | Foreman | Massachusetts |
| 5 | Mary E Wrenn | 54 | Wife | — | Massachusetts |
| 6 | William E Dennis | 41 | Head | Clerk | Massachusetts |
| 7 | Helen R Dennis | 39 | Wife | — | Massachusetts |
| 8 | James F Corcoran | 51 | Head | Manufacturer'S Agent | Connecticut |
| 9 | Margaret Corcoran | 52 | Wife | — | Massachusetts |
| 10 | Jane Corcoran | 15 | Daughter | — | Rhode Island |
| 11 | Elma Corcoran | 52 | Sister | Book-Keeper | Connecticut |
| 12 | John Corcoran | 44 | Brother | Local Foreman | Connecticut |
| 13 | John J Wager | 65 | Head | — | Canada |
| 14 | Ellen Wager | 63 | Wife | — | Massachusetts |
| 15 | Marta Wager | 24 | Daughter | Clerk | Massachusetts |
| 16 | Gertrude Wager | 21 | Daughter | Clerk | Massachusetts |
| 17 | Michael J Boyle | 70 | Father-in-law | — | Massachusetts |
| 18 | Frederick A Cosgrove | 36 | Head | Clerk | Massachusetts |
| 19 | Mary M Cosgrove | 30 | Wife | — | Massachusetts |
| 20 | Lester E Thompson | 64 | Head | — | Massachusetts |
| 21 | Annie M Thompson | 70 | Wife | — | Massachusetts |
| 22 | Mildred Thompson THIS PERSON | 21 | Daughter | Domestic | Massachusetts |
| 23 | Sydney J Corper | 57 | Head | Dental Technician | England |
| 24 | Elizabeth Corper | 57 | Wife | — | England |
| 25 | Anne Agnes Corper | 23 | Daughter | Clerk | Canada |
| 26 | William J Lindsey | 71 | Head | Real Estate Broker | Maine |
| 27 | Hattie V Lindsey | 55 | Wife | — | Massachusetts |
| 28 | Margaret M Cottwood | 43 | Head | Telephone Operator | Massachusetts |
| 29 | Joseph Cottwood | 18 | Son | — | Massachusetts |
| 30 | Thomas Cottwood | 16 | Son | — | Massachusetts |
| 31 | Dorothy Cottwood | 14 | Daughter | — | Vermont |
| 32 | Adolph W Roy | 48 | Head | — | Canada |
| 33 | Margaret Roy | 52 | Wife | — | Massachusetts |
| 34 | Mary E Roy | 18 | Daughter | — | Massachusetts |
| 35 | Austin J Palmer | 67 | Head | Fruit Handler | Massachusetts |
| 36 | Effie Palmer | 61 | Wife | — | Massachusetts |
| 37 | Jessie G Palmer | 64 | Sister | Book-Keeper | Massachusetts |
| 38 | Mary T Brown | 65 | Cousin | — | Massachusetts |
| 39 | John F Earls | 65 | Head | City Employee | Eire |
| 40 | Annie Earls | 59 | Wife | — | Eire |
Pedigree Summary
Mildred
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)