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Margaret Bradley — 1940 US Census Record
Model Tree available1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Margaret Bradley across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents John & John — first a daughter (b.~1918), then head of a 8-person household.
Age 22
b. ~1918
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Bradley |
| Given Name | Margaret J. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Somerville |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | Telephone Operator |
| Industry | Telephone Company |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 242 |
| Highest Grade | H-4 |
| 1935 Residence | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Telephone Operator |
| Township / Ward | Arlington Town |
| Est. Birth Year | ~1918 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Margaret | Age | Birth yr |
|---|---|---|---|---|
| Katherine Bradley | Head | — | 43 | ~1897 |
| Margaret Bradley | Daughter | — | 22 | ~1918 |
| Paul Bradley | Son | — | 8 | ~1932 |
| Richard Bradley | Son | — | 18 | ~1922 |
| Mary Bradley | Daughter | — | 19 | ~1921 |
| Theresa Bradley | Daughter | — | 12 | ~1928 |
| Robert Bradley | Son | — | 15 | ~1925 |
| John Bradley | Son | — | 25 | ~1915 |
Census Appearances
1920
Middlesex, Massachusetts
Daughter, age 1
Middlesex, Massachusetts · implied b. ~1919 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Bradley |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Mother Tongue | English |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Daughter, age 11
Middlesex, Massachusetts · implied b. ~1919 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Bradley |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Student |
| Industry | Public School |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Daughter, age 22
Middlesex-County, Massachusetts · implied b. ~1918 — 8 household members
| Surname | Bradley |
| Given Name | Margaret J. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Somerville |
| 1935 Residence (County) | Middlesex |
| Occupation | Telephone Operator |
| Industry | Telephone Company |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 242 |
| Highest Grade | H-4 |
| 1935 Residence | Massachusetts |
| 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 Margaret Bradley across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Bradley (~0.92 confidence) and father John Bradley (~0.92 confidence) and mother Catherine Bradley (~0.92 confidence) and mother Katherine Bradley (~0.92 confidence) and mother Katherine Bradley (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Bradley
b. ~1888
Source father
● Household
· direct · ~0.92
Father
John Bradley
b. ~1887
Source father
● Household
· direct · ~0.92
Mother
Catherine Bradley
b. ~1895
Source mother
● Household
· direct · ~0.92
Mother
Katherine Bradley
b. ~1896
Source mother
● Household
· direct · ~0.92
Mother
Katherine Bradley
b. ~1897
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Margaret Bradley
Daughter · 1940 · age 22 · b. ~1918 · Massachusetts
★ You are viewing this record
Sibling
Mary Bradley
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paul Bradley
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Bradley
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Bradley
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Bradley
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Theresa Bradley
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 — 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-t0627-01601-00850)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Katherine M. Bradley | 43 | Head | Housekeeper | Massachusetts |
| 2 | John V. Bradley | 25 | Son | Battery Repair Man | Massachusetts |
| 3 | Margaret J. Bradley THIS PERSON | 22 | Daughter | Telephone Operator | Massachusetts |
| 4 | Mary K. Bradley | 19 | Daughter | Adjuster (Clerk) | Massachusetts |
| 5 | Richard J. Jr. Bradley | 18 | Son | Printer-Assistant | Massachusetts |
| 6 | Robert P. Bradley | 15 | Son | — | Massachusetts |
| 7 | Theresa F. Bradley | 12 | Daughter | — | Massachusetts |
| 8 | Paul A. Bradley | 8 | Son | — | Massachusetts |
| 9 | Helen B. Titus | 46 | Head | Recreation Instructor | Massachusetts |
| 10 | Natalie E. Titus | 17 | Daughter | — | Massachusetts |
| 11 | Gertrude R. Dwyer | 37 | Partner | Chief Clerk | Massachusetts |
| 12 | Helen M. Devlin | 14 | Partner's Niece | — | Massachusetts |
| 13 | Eben T. Simonds | 39 | Head | Engineer | Massachusetts |
| 14 | Madelyn V. Simonds | 38 | Wife | — | Massachusetts |
| 15 | Ronald Simonds | 10 | Son | — | Massachusetts |
| 16 | Sarah Cade | 55 | Head | — | Canada English |
| 17 | Robert W. Cade | 19 | Son | — | Massachusetts |
| 18 | Charles Dodge | 60 | Brother | Painter | Canada English |
| 19 | Walter J. Finlay | 40 | Head | Sales Manager | Massachusetts |
| 20 | Ida C. Finlay | 39 | Wife | — | Canada English |
| 21 | Patricia C. Finlay | 13 | Daughter | — | Massachusetts |
| 22 | Walter J. Jr. Finlay | 10 | Son | — | Massachusetts |
| 23 | Joan Finlay | 8 | Daughter | — | Massachusetts |
| 24 | Malcolm C. Dodge | 39 | Head | Investment Banker | Massachusetts |
| 25 | Glenita M. Dodge | 40 | Wife | — | Canada English |
| 26 | Natalie Dodge | 3 | Daughter | — | Massachusetts |
| 27 | Edward T. Mcnamara | 77 | Head | — | Massachusetts |
| 28 | Emma S. Mcnamara | 76 | Wife | — | Massachusetts |
| 29 | Evelyn L. Mcnamara | 43 | Daughter | School Teacher | Massachusetts |
| 30 | Maud J. Munroe | 72 | Head | — | Massachusetts |
| 31 | Carrie Chaplin | 67 | Lodger | Nurse | Massachusetts |
| 32 | Kathleen Pearce | 43 | Lodger | Executive | New York |
| 33 | Shirley Walker | 21 | Lodger | — | Massachusetts |
| 34 | Howard S. Giles | 60 | Head | Clerk Booker | Massachusetts |
| 35 | Eva M. Giles | 57 | Wife | — | New Hampshire |
| 36 | Charles S. (Ab) Giles | 26 | Son | Artist | Massachusetts |
| 37 | William R. Mantz | 62 | Head | Bricklayer | Scotland |
| 38 | Agnes C. Mantz | 62 | Wife | — | Scotland |
| 39 | Malcolm T. Mantz | 37 | Son | Musician | Scotland |
| 40 | Frank L. White | 53 | Head | Purchaser | New York |
Pedigree Summary
Margaret + 6 siblings
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)