MS
Mary Sweeney — 1940 US Census Record
Model Tree available1940 United States Federal Census · Wayne-County, Michigan
Our Model Tree links this Mary Sweeney across the 1920, 1930 and 1940 US Censuses in Wayne-County, Michigan (XGBoost, ~Confirmed), with identified parents Frank & Anna — first a daughter (b.~1894), then head of a 4-person household.
Age 46
b. ~1894
Female
Daughter
Born: Michigan
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Wayne-County, Michigan |
| Surname | Sweeney |
| Given Name | Mary L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 46 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Detroit City |
| 1935 Residence (County) | Wayne |
| Additional Details | |
| Occupation | Clerk |
| Industry | Electrical co. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1500 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Occupation | Clerk |
| Township / Ward | Detroit City |
| Est. Birth Year | ~1894 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Catherine Sweeney | Daughter | — | 44 | ~1896 |
| Mary Sweeney | Daughter | — | 46 | ~1894 |
| Anna Sweeney | Head | — | 79 | ~1861 |
| Edward Sweeney | Son | — | 49 | ~1891 |
Census Appearances
1920
Wayne, Michigan
Daughter, age 26
Wayne, Michigan · implied b. ~1894 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sweeney |
| Given Name | Mary L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Michigan |
| Occupation | Clerk |
| Industry | Edison Elec |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1930
Wayne, Michigan
Daughter, age 34
Wayne, Michigan · implied b. ~1896 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sweeney |
| Given Name | Mary F. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 34 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Free State Ireland |
| Mother's Birthplace | Michigan |
| Occupation | Clerk |
| Industry | Advertising |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Wayne-County, Michigan
Daughter, age 46
Wayne-County, Michigan · implied b. ~1894 — 4 household members
| Surname | Sweeney |
| Given Name | Mary L. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 46 |
| Marital Status | Single |
| Birthplace | Michigan |
| 1935 Residence (City) | Detroit City |
| 1935 Residence (County) | Wayne |
| Occupation | Clerk |
| Industry | Electrical co. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1500 |
| Highest Grade | Hs 4 |
| 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 Sweeney across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Frank Sweeney (~0.92 confidence) and mother Anna Sweeney (~0.92 confidence) and mother Anna Sweeney (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Frank Sweeney
b. ~1850
Source father
● Household
· direct · ~0.92
Mother
Anna Sweeney
b. ~1861
Source mother
● Household
· direct · ~0.92
Mother
Anna Sweeney
b. ~1863
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Sweeney
Daughter · 1940 · age 46 · b. ~1894 · Michigan
★ You are viewing this record
Sibling
Edward Sweeney
Sibling · 1940 · age 49
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Sweeney
Sibling · 1940 · age 44
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 — Wayne-County, Michigan
Open full size
1940 US Federal Census — Wayne-County, Michigan
Page Contents
37 people indexed on this census page (nara:1940:m-t0627-01848-00171)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Joseph Gutierrez | 35 | Head | Laborer | Mexico |
| 2 | Julia Gutierrez | 34 | Wife | — | Mexico |
| 3 | Jacinto Gutierrez | 16 | Son | — | Kansas |
| 4 | Concepcion Gutierrez | 15 | Son | — | Kansas |
| 5 | Jesus Gutierrez | 13 | Son | — | Kansas |
| 6 | Maria Gutierrez | 10 | Daughter | — | Michigan |
| 7 | Alfredo Gutierrez | 6 | Son | — | Michigan |
| 8 | Miguel Gutierrez | 9 | Son | — | Michigan |
| 9 | Delores Gutierrez | 5 | Daughter | — | Michigan |
| 10 | Joseph Kostenick | 31 | Head | Electrical Helper | Pennsylvania |
| 11 | Bernice Kostenick | 25 | Wife | — | Michigan |
| 12 | Elaine Kostenick | 4 | Daughter | — | Michigan |
| 13 | Dolores Joyce Kostenick | 2 | Daughter | — | Michigan |
| 14 | Otilia Serda | 43 | Head | Cook | Mexico |
| 15 | Luciana Serda | 14 | Daughter | — | Texas |
| 16 | Margaret Serda | 12 | Daughter | — | Texas |
| 17 | Juan Serda | 10 | Son | — | Texas |
| 18 | Henry Serda | 9 | Son | — | Texas |
| 19 | Juanita Cardanes | 21 | Daughter | Waitress | Texas |
| 20 | Angel Marin | 35 | Lodger | Baker | Mexico |
| 21 | Alex Ostrowska | 35 | Head | Laborer | Michigan |
| 22 | Josephine Ostrowska | 31 | Wife | — | Illinois |
| 23 | Norma Ostrowska | 13 | Daughter | — | Indiana |
| 24 | Anna Ostrowska | 8 | Daughter | — | Michigan |
| 25 | John Ostrowska | 7 | Son | — | Michigan |
| 26 | Delores Ostrowska | 5 | Daughter | — | Michigan |
| 27 | Angela Ostrowska | 4 | Daughter | — | Michigan |
| 28 | Virginia Ostrowska | 1 | Daughter | — | Michigan |
| 29 | Anna Sweeney | 79 | Head | — | Michigan |
| 30 | Mary L. Sweeney THIS PERSON | 46 | Daughter | Clerk | Michigan |
| 31 | Edward J. Sweeney | 49 | Son | Clerk | Michigan |
| 32 | Catherine H. Sweeney | 44 | Daughter | — | Michigan |
| 33 | Henry Swenson | 67 | Head | Laborer | Wisconsin |
| 34 | Emma Swenson | 59 | Wife | — | Wisconsin |
| 35 | Raymond Watkins | 75 | Head | Top Light Armed | Michigan |
| 36 | Jess Watkins | 29 | Father | — | Michigan |
| 37 | Joseph Bird | 43 | Lodger | Punch Press Operator | New York |
Pedigree Summary
Mary + 2 siblings
Gen 1 · 3 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)