EC
Elizabeth Cooper — 1940 US Census Record
Model Tree available1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Elizabeth Cooper across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Ashley & Lenny — first a daughter (b.~1902), then head of a 3-person household.
Age 38
b. ~1902
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Cooper |
| Given Name | Elizabeth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 38 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Malden City |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | Bookkeeper |
| Industry | Retail Clothing Store |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 2106 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Bookkeeper |
| Township / Ward | Malden City |
| Est. Birth Year | ~1902 |
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 Elizabeth | Age | Birth yr |
|---|---|---|---|---|
| Madeline Cooper | Daughter | — | 13 | ~1927 |
| Elizabeth Cooper | Daughter | — | 38 | ~1902 |
| Lenny Cooper | Head | — | 64 | ~1876 |
Census Appearances
1920
Middlesex, Massachusetts
Other, age 18
Middlesex, Massachusetts · implied b. ~1902 — 24 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Elizabeth A |
| Relationship to Head | Boarder |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Rubber Maker |
| Industry | Rubber Factory |
| Class of Worker | W |
| Can Read | No |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Daughter, age 28
Middlesex, Massachusetts · implied b. ~1902 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Elizabeth Z |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Clerk |
| Industry | Clothing shop |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Daughter, age 38
Middlesex-County, Massachusetts · implied b. ~1902 — 3 household members
| Surname | Cooper |
| Given Name | Elizabeth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 38 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Malden City |
| 1935 Residence (County) | Middlesex |
| Occupation | Bookkeeper |
| Industry | Retail Clothing Store |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 2106 |
| 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 Elizabeth Cooper across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Ashley Cooper (~0.92 confidence) and mother Lenny Cooper (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Ashley Cooper
b. ~1867
Source father
● Household
· direct · ~0.92
Mother
Lenny Cooper
b. ~1876
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Elizabeth Cooper
Daughter · 1940 · age 38 · b. ~1902 · Massachusetts
★ You are viewing this record
Sibling
Madeline Cooper
Sibling · 1940 · age 13
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-t0627-01608-00488)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Janet Hancock | 30 | Head | Secretary | Massachusetts |
| 42 | Janet Hancock | 55 | Mother | Home Maker | Canada English |
| 43 | Henry Gerrish | 71 | Head | — | Massachusetts |
| 44 | Susan Gerrish | 65 | Wife | — | Massachusetts |
| 45 | E. Eddy Niven | 53 | Head | School Teacher | Massachusetts |
| 46 | Emma Niven | 82 | Mother | — | Massachusetts |
| 47 | Walter Hill | 84 | Head | — | Massachusetts |
| 48 | Joanna Hill | 73 | Wife | — | Rhode Island |
| 49 | Helene Novak | 46 | Head | School Teacher | Massachusetts |
| 50 | Bertha Ferry | 65 | Head | — | Illinois |
| 51 | Alice E. Lohr | 70 | Head | — | Massachusetts |
| 52 | Flora E. Fish | 69 | Head | — | Massachusetts |
| 53 | Carrie Armitage | 56 | Head | — | Massachusetts |
| 54 | Florence Norton | 60 | Head | School Teacher | Kentucky |
| 55 | Maude Norton | 55 | Sister | School Teacher | New Hampshire |
| 56 | Walter Myers | 39 | Head | Store Room | Massachusetts |
| 57 | Elizabeth Myers | 30 | Wife | Hostess | Massachusetts |
| 58 | Betti Lodge | 13 | Daughter | — | Massachusetts |
| 59 | Ruth Low | 18 | Sister in law | Waitress | Massachusetts |
| 60 | W. A. Lewis | 46 | Head | Clerk | Maine |
| 61 | Frances Lewis | 40 | Wife | Clerk | Massachusetts |
| 62 | Ethel Houdlett | 72 | Head | — | Massachusetts |
| 63 | Edward Wentworth | 62 | Head | Office Manager | Maine |
| 64 | Mary A. Wentworth | 60 | Sister | — | Maine |
| 65 | Ella Hayward | 80 | Head | — | Massachusetts |
| 66 | Frank Foley | 47 | Head | Salesman | Massachusetts |
| 67 | Stella Foley | 27 | Wife | — | Maine |
| 68 | Lawrence Sanford | 32 | Head | Proprietor | Massachusetts |
| 69 | Agnes Sanford | 27 | Wife | — | Massachusetts |
| 70 | Walter Grant | 25 | Head | Secretary | Rhode Island |
| 71 | Jane Grant | 25 | Wife | — | Rhode Island |
| 72 | Alrick Swensson | 58 | Head | Pharmacist | Massachusetts |
| 73 | Blanche H. Swensson | 50 | Wife | — | Massachusetts |
| 74 | Rena Sargent | 82 | Mother in law | — | Maine |
| 75 | Lenny Cooper | 64 | Head | — | Massachusetts |
| 76 | Elizabeth Cooper THIS PERSON | 38 | Daughter | Bookkeeper | Massachusetts |
| 77 | Madeline Cooper | 13 | Daughter | — | Massachusetts |
| 78 | Wielen Minner | 59 | Head | Salesman | Massachusetts |
| 79 | Viola Minner | 57 | Wife | Teacher | Massachusetts |
| 80 | Florence Mackey | 61 | Head | Professional Nurse | Canada English |
Pedigree Summary
Elizabeth + 1 sibling
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)