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Dorothy Lewis — 1940 US Census Record
Model Tree available1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Dorothy Lewis across the 1910, 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Michael & Mary — first a spouse (b.~1909), then head of a 3-person household.
Age 31
b. ~1909
Female
Spouse
Born: Massachusetts
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Lewis |
| Given Name | Dorothy M |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Ayer town |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Same Place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Ayer Town |
| Est. Birth Year | ~1909 |
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 Dorothy | Age | Birth yr |
|---|---|---|---|---|
| Rita Lewis | Daughter | — | 12 | ~1928 |
| Edward Lewis | Head | — | 31 | ~1909 |
| Dorothy Lewis | Spouse | — | 31 | ~1909 |
Census Appearances
1910
Middlesex, Massachusetts
Daughter, age 1
Middlesex, Massachusetts · implied b. ~1909 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lewis |
| Given Name | Dorothy H |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | none |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1920
Middlesex, Massachusetts
Daughter, age 11
Middlesex, Massachusetts · implied b. ~1909 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lewis |
| Given Name | Dorothy H. |
| 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 | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Daughter, age 21
Middlesex, Massachusetts · implied b. ~1909 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Lewis |
| Given Name | Dorothy J |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Stenographer |
| Industry | Newspaper |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Spouse, age 31
Middlesex-County, Massachusetts · implied b. ~1909 — 3 household members
| Surname | Lewis |
| Given Name | Dorothy M |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Ayer town |
| 1935 Residence (County) | Middlesex |
| Income (1939) | 0 |
| Highest Grade | No 6 |
| 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 Lewis across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Michael Lewis (~0.92 confidence) and mother Mary Lewis (~0.92 confidence) and mother Mary Lewis (~0.92 confidence) and mother Mary Lewis (~0.92 confidence) and father Michael Lewis (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Michael Lewis
b. ~1870
Source father
● Household
· direct · ~0.92
Mother
Mary Lewis
b. ~1879
Source mother
● Household
· direct · ~0.92
Mother
Mary Lewis
b. ~1879
Source mother
● Household
· direct · ~0.92
Mother
Mary Lewis
b. ~1879
Source mother
● Household
· direct · ~0.92
Father
Michael Lewis
b. ~1879
Source father
● Household
· direct · ~0.92
This person
Anchor record
Dorothy Lewis
Spouse · 1940 · age 31 · b. ~1909 · 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-t0627-01602-00371)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Gertie Nichols | 25 | Wife | — | New Hampshire |
| 2 | Francis Youngclaus | 31 | Head | Manager - Meat Dept | Massachusetts |
| 3 | Josephine Youngclaus | 25 | Wife | — | Massachusetts |
| 4 | Margaret M Youngclaus | 0 | Daughter | — | Massachusetts |
| 5 | Eva Hyde | 57 | Head | — | Canada English |
| 6 | Evelyn Hyde | 29 | Daughter | Budget Clerk | Massachusetts |
| 7 | George Hyde | 27 | Son | Operator | Massachusetts |
| 8 | Edmund Hyde | 23 | Son | — | Massachusetts |
| 9 | Carolyn Hyde | 15 | Daughter | — | Massachusetts |
| 10 | Herbert Willson | 36 | Head | Clergyman | Pennsylvania |
| 11 | Walter C. Harris | 51 | Head | Packer | Alabama |
| 12 | Alice Harris | 44 | Wife | — | New Jersey |
| 13 | Richard C Harris | 19 | Son | Jackar | Massachusetts |
| 14 | Stanley D Harris | 18 | Son | Clerk | New Jersey |
| 15 | William B Harris | 4 | Son | — | Massachusetts |
| 16 | Orin B. Foster | 32 | Head | Yardman | Massachusetts |
| 17 | Lorna Foster | 27 | Wife | — | Vermont |
| 18 | John H. Wood | 27 | Head | Steam Fireman | New Hampshire |
| 19 | Velma Wood | 34 | Wife | — | Massachusetts |
| 20 | Richard G. Sylvester | 37 | Head | Ticket Seller | Massachusetts |
| 21 | Mary C. Sylvester | 33 | Wife | Clerk | Massachusetts |
| 22 | Michael J Murray | 55 | Head | Freight Conductor | Massachusetts |
| 23 | Alvina Murray | 54 | Wife | — | Massachusetts |
| 24 | Paul P Durette | 41 | Head | Section Foreman | Canada French |
| 25 | Leoda H Durette | 39 | Wife | — | Massachusetts |
| 26 | Paul J Durette | 16 | Son | — | Massachusetts |
| 27 | Glenda Durette | 14 | Daughter | — | Massachusetts |
| 28 | Nora Fitzgerald | 28 | Head | — | Irish Free State |
| 29 | John Fitzgerald | 6 | Son | — | Massachusetts |
| 30 | Wilbur Hudlin | 40 | Head | Warehouseman | Massachusetts |
| 31 | Lotta Hudlin | 37 | Wife | — | Massachusetts |
| 32 | Leo Hudlin | 15 | Son | — | Massachusetts |
| 33 | James Hudlin | 11 | Son | — | Massachusetts |
| 34 | David Hudlin | 7 | Son | — | Massachusetts |
| 35 | Mary Hudlin | 1 | Daughter | — | Massachusetts |
| 36 | Mildred Clair | 35 | Lodger | — | Massachusetts |
| 37 | Richard Clair | 10 | Lodger | — | Massachusetts |
| 38 | Edward F Lewis | 31 | Head | Laboring Road | Massachusetts |
| 39 | Dorothy M Lewis THIS PERSON | 31 | Wife | — | Massachusetts |
| 40 | Rita M Lewis | 12 | Daughter | — | Massachusetts |
Pedigree Summary
Dorothy
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)