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Marie Thomas — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this Marie Thomas across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1920), then head of a 7-person household.
Age 20
b. ~1920
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Thomas |
| Given Name | Marie |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Highest Grade | C-2 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Boston City |
| Est. Birth Year | ~1920 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Marie | Age | Birth yr |
|---|---|---|---|---|
| Josephine Thomas | Daughter | — | 19 | ~1921 |
| Joseph Thomas | Son | — | 14 | ~1926 |
| Lois Thomas | Spouse | — | 54 | ~1886 |
| Clement Thomas | Head | — | 54 | ~1886 |
| Clement Thomas | Son | — | 12 | ~1928 |
| Marie Thomas | Daughter | — | 20 | ~1920 |
| Lois Thomas | Daughter | — | 17 | ~1923 |
Census Appearances
1930
Suffolk, Massachusetts
Daughter, age 9
Suffolk, Massachusetts · implied b. ~1921 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 9 |
| 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
Suffolk-County, Massachusetts
Daughter, age 20
Suffolk-County, Massachusetts · implied b. ~1920 — 7 household members
| Surname | Thomas |
| Given Name | Marie |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Highest Grade | C-2 |
| 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 Marie Thomas across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Marie Thomas
Daughter · 1940 · age 20 · b. ~1920 · Massachusetts
★ You are viewing this record
Sibling
Lois Thomas
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Thomas
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Josephine Thomas
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Clement Thomas
Sibling · 1940 · age 12
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-t0627-01679-00459)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Peter Innes | 52 | Head | — | Massachusetts |
| 2 | Richard Innes | 5 | Son | — | Massachusetts |
| 3 | Clement Thomas | 54 | Head | Fish Cutter | Massachusetts |
| 4 | Lois B. Thomas | 54 | Wife | — | Vermont |
| 5 | Marie Thomas THIS PERSON | 20 | Daughter | — | Massachusetts |
| 6 | Josephine Thomas | 19 | Daughter | — | Massachusetts |
| 7 | Lois Thomas | 17 | Daughter | — | Massachusetts |
| 8 | Joseph Thomas | 14 | Son | — | Massachusetts |
| 9 | Clement Jr. Thomas | 12 | Son | — | Massachusetts |
| 10 | Pelham | 83 | Head | — | Germany |
| 11 | Leo J. Pelham | 39 | Son | Chemical Eng. | Massachusetts |
| 12 | Edward F. Concree | 62 | Head | Supervisant | Massachusetts |
| 13 | Frances J. Concree | 61 | Wife | — | Massachusetts |
| 14 | Margaret Concree | 26 | Daughter | Artist | Massachusetts |
| 15 | Elizabeth Marrow | 39 | Head | Teacher | Massachusetts |
| 16 | Mary E. Sweeney | 42 | Head | Teacher | Massachusetts |
| 17 | Elizabeth Mcdougall | 57 | Head | — | Eire |
| 18 | Mary A. Mcdougall | 51 | Sister | — | Eire |
| 19 | Harriet M. Eldridge | 66 | Head | — | Maine |
| 20 | Mary Eldridge | 36 | Daughter | Seamstress | Massachusetts |
| 21 | Helen A. Eldridge | 24 | Daughter | Clerk | Massachusetts |
| 22 | Robert Eldridge | 20 | Son | — | Massachusetts |
| 23 | Mary Eldridge | 18 | Daughter | — | Massachusetts |
| 24 | William Driscoll | 45 | Head | Contractor | Massachusetts |
| 25 | Mary A. Driscoll | 42 | Wife | — | Ireland |
| 26 | Nicholas Driscoll | 21 | Son | Engineer | Massachusetts |
| 27 | Mary Driscoll | 20 | Daughter | Bookkeeper | Massachusetts |
| 28 | William Driscoll | 15 | Son | — | Massachusetts |
| 29 | John Driscoll | 14 | Son | — | Massachusetts |
| 30 | Helen Driscoll | 12 | Daughter | — | Massachusetts |
| 31 | Kathleen Felahive | 35 | Servant | Servant | Ireland |
| 32 | Joseph S. Green | 45 | Head | Teacher | Massachusetts |
| 33 | Cyrillia Green | 46 | Wife | — | Massachusetts |
| 34 | Cyrillia Green | 18 | Daughter | — | Massachusetts |
| 35 | Joseph S. Jr. Green | 16 | Son | — | Massachusetts |
| 36 | Alice Green | 10 | Daughter | — | Massachusetts |
| 37 | Herman St. Jackson | 45 | Head | Manager | Canada |
| 38 | Sophie C. Jackson | 45 | Wife | — | Massachusetts |
| 39 | Warren Jackson | 10 | Son | — | Massachusetts |
| 40 | Josephine Peters | 39 | Head | Teacher | Massachusetts |
Related Census Records
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)