MS
Mary Stanley — 1940 US Census Record
Model Tree available1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Mary Stanley across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Maurice & Lawrence — first a daughter (b.~1912), then head of a 7-person household.
Age 28
b. ~1912
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Stanley |
| Given Name | Mary H. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Arlington Town |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | Payroll Clerk |
| Industry | Retail Dept Store |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1040 |
| Highest Grade | C 4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Payroll Clerk |
| Township / Ward | Arlington Town |
| Est. Birth Year | ~1912 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Stanley | Daughter | — | 28 | ~1912 |
| Catherine Stanley | Daughter | — | 26 | ~1914 |
| Anna Stanley | Daughter | — | 17 | ~1923 |
| Arthur Stanley | Head | — | 56 | ~1884 |
| John Carroll | Other | — | 89 | ~1851 |
| Paul Stanley | Son | — | 19 | ~1921 |
| Annie Stanley | Spouse | — | 55 | ~1885 |
Census Appearances
1920
Middlesex, Massachusetts
Daughter, age 7
Middlesex, Massachusetts · implied b. ~1913 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Stanley |
| Given Name | Margaret W |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Daughter, age 18
Middlesex, Massachusetts · implied b. ~1912 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Stanley |
| Given Name | Margaret A |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Daughter, age 28
Middlesex-County, Massachusetts · implied b. ~1912 — 7 household members
| Surname | Stanley |
| Given Name | Mary H. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Arlington Town |
| 1935 Residence (County) | Middlesex |
| Occupation | Payroll Clerk |
| Industry | Retail Dept Store |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1040 |
| Highest Grade | C 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 Mary Stanley across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Maurice Stanley (~0.92 confidence) and father Lawrence Stanley (~0.92 confidence) and mother Margaret Stanley (~0.92 confidence) and father Arthur Stanley (~0.92 confidence) and mother Annie Stanley (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Maurice Stanley
b. ~1875
Source father
● Household
· direct · ~0.92
Father
Lawrence Stanley
b. ~1876
Source father
● Household
· direct · ~0.92
Mother
Margaret Stanley
b. ~1878
Source mother
● Household
· direct · ~0.92
Father
Arthur Stanley
b. ~1884
Source father
● Household
· direct · ~0.92
Mother
Annie Stanley
b. ~1885
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Stanley
Daughter · 1940 · age 28 · b. ~1912 · Massachusetts
★ You are viewing this record
Sibling
Paul Stanley
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Anna Stanley
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Stanley
Sibling · 1940 · age 26
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-t0627-01601-00581)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mary Finnegan | 4 | Daughter | — | Massachusetts |
| 2 | Anne L. Finnegan | 3 | Daughter | — | Massachusetts |
| 3 | Edgar E. Ring | 59 | Head | Paper Hanger | Massachusetts |
| 4 | Helen K. Ring | 58 | Wife | — | Pennsylvania |
| 5 | John W. Mckernon | 64 | Head | Carpenter | Canada-English |
| 6 | Stella A. Mckernon | 64 | Wife | — | Canada-English |
| 7 | Leslie M. Collins | 34 | Lodger | Teacher | Maine |
| 8 | Joseph M. Gracia | 62 | Head | Postal Clerk | California |
| 9 | Annie M. Gracia | 61 | Wife | — | New York |
| 10 | Bernard F. Sweeney | 38 | Head | Stock Clerk | Massachusetts |
| 11 | Gertrude T. Sweeney | 36 | Wife | Stitcher | Massachusetts |
| 12 | Edward S. Cowan | 59 | Head | Stationary Engineer | Canada-English |
| 13 | Essie F. Cowan | 58 | Wife | — | Canada-English |
| 14 | Thelma B. Baker | 30 | Daughter | — | Canada-English |
| 15 | Sterling B. Cowan | 5 | Son | Captain-Theaters | Canada-English |
| 16 | Greta M. Cowan | 3 | Daughter | — | Canada-English |
| 17 | Palmira Tassari | 49 | Head | Proprietor | Italy |
| 18 | Lee J. Cowan | 59 | Head | Carpenter | Canada-English |
| 19 | Mary M. Cowan | 58 | Wife | — | Canada-English |
| 20 | Ruby M. B. Cowan | 24 | Daughter | — | Canada-English |
| 21 | Mary A. Whyte | 65 | Lodger | — | Scotland |
| 22 | Margaret A. Whyte | 55 | Lodger | — | Scotland |
| 23 | Clarence D. Poirier | 50 | Head | Painter | Canada-English |
| 24 | Marie R. Poirier | 43 | Wife | — | Massachusetts |
| 25 | Arthur R. Stanley | 56 | Head | Meat Cutter | Maine |
| 26 | Annie L. Stanley | 55 | Wife | — | Canada-English |
| 27 | Mary H. Stanley THIS PERSON | 28 | Daughter | Payroll Clerk | Massachusetts |
| 28 | Catherine R. Stanley | 26 | Daughter | Waitress | Massachusetts |
| 29 | Paul F. Stanley | 19 | Son | Office Boy | Massachusetts |
| 30 | Anna E. Stanley | 17 | Daughter | — | Massachusetts |
| 31 | John J. Carroll | 89 | Father-in-law | — | Canada-English |
| 32 | John W. Lund | 25 | Head | Mechanic'S Helper | Massachusetts |
| 33 | Claire C. Lund | 25 | Wife | Saleswoman | Massachusetts |
| 34 | Willard A. Palmer | 60 | Head | Auditor | — |
| 35 | Isabelle J. Palmer | 25 | Daughter | Stenographer | — |
| 36 | Anna Sweeney | 53 | Head | Proprietor | Austria |
| 37 | Henry J. Sweeney | 24 | Son | Musician | Massachusetts |
| 38 | Alfred J. Thibeault | 40 | Head | Proprietor | Massachusetts |
| 39 | Mildred W. Thibeault | 39 | Wife | — | Massachusetts |
| 40 | Marcella M. Thibeault | 14 | Daughter | — | Massachusetts |
Pedigree Summary
Mary + 3 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)