MC
Mary Cassidy — 1940 US Census Record
Model Tree available1940 United States Federal Census · Van-Buren-County, Michigan
Our Model Tree links this Mary Cassidy across the 1920, 1930 and 1940 US Censuses in Van-Buren-County, Michigan (XGBoost, ~Confirmed), with identified parents George & Jim — first a daughter (b.~1917), then head of a 6-person household.
Age 23
b. ~1917
Female
Daughter
Born: Michigan
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Van-Buren-County, Michigan |
| Surname | Cassidy |
| Given Name | Mary Ann |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Bangor Village |
| 1935 Residence (County) | Van Buren |
| Additional Details | |
| Occupation | Housework |
| Class of Worker | PW |
| Hours Worked | 30 |
| Income (1939) | 60 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Occupation | Housework |
| Township / Ward | Bangor Village |
| Est. Birth Year | ~1917 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Agnes Craig | Daughter | — | 22 | ~1918 |
| Mary Cassidy | Daughter | — | 23 | ~1917 |
| Helen Cassidy | Daughter | — | 14 | ~1926 |
| George Cassidy | Head | — | 68 | ~1872 |
| Robert Craig | Other | — | 1 | ~1939 |
| Elizabeth Cassidy | Spouse | — | 47 | ~1893 |
Census Appearances
1920
Van Buren, …
Daughter, age 2
Van Buren, Michigan · implied b. ~1918 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cassidy |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | England |
| Occupation | none |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1930
Van Buren, …
Daughter, age 13
Van Buren, Michigan · implied b. ~1917 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cassidy |
| Given Name | Maryann |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Van-Buren-County, Michigan
Daughter, age 23
Van-Buren-County, Michigan · implied b. ~1917 — 6 household members
| Surname | Cassidy |
| Given Name | Mary Ann |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Bangor Village |
| 1935 Residence (County) | Van Buren |
| Occupation | Housework |
| Class of Worker | PW |
| Hours Worked | 30 |
| Income (1939) | 60 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
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 Cassidy across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father George Cassidy (~0.92 confidence) and father Jim Cassidy (~0.92 confidence) and mother Mary Cassidy (~0.92 confidence) and mother Elizabeth Cassidy (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
George Cassidy
b. ~1872
Source father
● Household
· direct · ~0.92
Father
Jim Cassidy
b. ~1872
Source father
● Household
· direct · ~0.92
Mother
Mary Cassidy
b. ~1874
Source mother
● Household
· direct · ~0.92
Mother
Elizabeth Cassidy
b. ~1893
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Cassidy
Daughter · 1940 · age 23 · b. ~1917 · Michigan
★ You are viewing this record
Sibling
Helen Cassidy
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Agnes Craig
Sibling · 1940 · age 22
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 — Van-Buren-County, Michigan
Open full size
1940 US Federal Census — Van-Buren-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01822-00115)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Charles Stryker | 4 | Son | — | Michigan |
| 2 | John Jacobs | 61 | Head | Blacksmith | Indiana |
| 3 | Ada Jacobs | 48 | Wife | — | Indiana |
| 4 | Pauline Jacobs | 30 | Daughter | — | Michigan |
| 5 | John Jr. Jacobs | 13 | Son | — | Michigan |
| 6 | Charles Salasky | 41 | Head | Laborer | Illinois |
| 7 | Mable Salasky | 36 | Wife | — | Michigan |
| 8 | Harold Salasky | 17 | Son | — | Michigan |
| 9 | Raymond Salasky | 13 | Son | — | Michigan |
| 10 | Robert Salasky | 11 | Son | — | Michigan |
| 11 | Sarah Salasky | 9 | Daughter | — | Michigan |
| 12 | Ida Salasky | 7 | Daughter | — | Michigan |
| 13 | Ernest Boismier | 60 | Head | Conductor | Illinois |
| 14 | Alice Boismier | 54 | Wife | — | Illinois |
| 15 | Clara Vaillancourt | 62 | Sister-in-law | — | Canada-French |
| 16 | Albert Grey | 47 | Head | — | Ohio |
| 17 | Mary Grey | 66 | Wife | — | Michigan |
| 18 | Mary Pantzer | 58 | Head | — | England |
| 19 | Oscar Ghidotti | 29 | Head | Mechanic | Illinois |
| 20 | Louise Ghidotti | 27 | Wife | — | Illinois |
| 21 | John Ghidotti | 1 | Son | — | Michigan |
| 22 | Donald Stuckey | 23 | Head | Factory | Kansas |
| 23 | Mary Stuckey | 23 | Wife | — | Oklahoma |
| 24 | Henry Becker | 82 | Head | — | Kentucky |
| 25 | Clara Becker | 79 | Wife | — | Illinois |
| 26 | Paul Becker | 50 | Son | Laborer | Illinois |
| 27 | Rosa Miller | 40 | Head | — | Germany |
| 28 | Daphne Miller | 50 | Daughter | — | Indiana |
| 29 | Edward Strickler | 33 | Head | Carpenter | Michigan |
| 30 | Vivian Strickler | 27 | Wife | — | Michigan |
| 31 | Charles Strickler | 10 | Son | — | Michigan |
| 32 | Howard Strickler | 6 | Son | — | Michigan |
| 33 | Don Strickler | 1 | Son | — | Michigan |
| 34 | George Cassidy | 68 | Head | — | Michigan |
| 35 | Elizabeth Cassidy | 47 | Wife | — | Illinois |
| 36 | Mary Ann Cassidy THIS PERSON | 23 | Daughter | Housework | Michigan |
| 37 | Helen Cassidy | 14 | Daughter | — | Michigan |
| 38 | Agnes Craig | 22 | Daughter | Housework | Michigan |
| 39 | Robert Craig | 1 | G. Son | — | Michigan |
| 40 | C. E. Williams | 59 | Head | Laborer | Michigan |
Pedigree Summary
Mary + 2 siblings
Gen 1 · 4 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)