MS
Mary Sweeney — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Cook, Illinois
Our Model Tree links this Mary Sweeney across the 1930 and 1940 US Censuses in Cook, Illinois (XGBoost, ~Confirmed) — first a spouse (b.~1888), then head of a 12-person household.
Age 42
b. ~1888
Female
Spouse
Born: South Dakota
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | Sweeney |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | South Dakota |
| Age at First Marriage | 18 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
| Township / Ward | City Of Chicago |
| Est. Birth Year | ~1888 |
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.
12 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Margaret Sweeney | Daughter | — | 11 | ~1919 |
| Eugenia Sweeney | Daughter | — | 20 | ~1910 |
| Virginia Sweeney | Daughter | — | 6 | ~1924 |
| Lucille Sweeney | Daughter | — | 17 | ~1913 |
| Marie Sweeney | Daughter | — | 22 | ~1908 |
| John Sweeney | Head | — | 44 | ~1886 |
| William Tilson | Other | — | 44 | ~1886 |
| Francis Sweeney | Son | — | 12 | ~1918 |
| Bernard Sweeney | Son | — | 16 | ~1914 |
| Robert Sweeney | Son | — | 4 | ~1926 |
| Harry Sweeney | Son | — | 8 | ~1922 |
| Mary Sweeney | Spouse | — | 42 | ~1888 |
Census Appearances
1930
Cook, Illinois
Spouse, age 42
Cook, Illinois · implied b. ~1888 — 12 household members
| Surname | Sweeney |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | South Dakota |
| Age at First Marriage | 18 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Can Read/Write | Yes |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
1940
Cook-County, Illinois
Spouse, age 52
Cook-County, Illinois · implied b. ~1888 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sweeney |
| Given Name | May J. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | South Dakota |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | South Dakota |
| Birth Country | United States |
| Birthplace (normalized) | south dakota |
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 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Sweeney
Spouse · 1930 · age 42 · b. ~1888 · Illinois
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Cook, Illinois
Open full size
1930 US Federal Census — Cook, Illinois
Page Contents
50 people indexed on this census page (ia:1930:illinoiscensus00reel429:0719)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Marie Dixon | 35 | Head | Waitress | Poland |
| 2 | Barbara Kotra | 59 | Mother | — | Poland |
| 3 | Grace Dixon | 23 | Boarder | Operator | Illinois |
| 4 | Michael Tarezynski | 39 | Boarder | Baker | Poland |
| 5 | Joseph Karbelis | 55 | Head | Car Repair | Lithuania |
| 6 | Barbara Karbelis | 54 | Wife | — | Lithuania |
| 7 | Albert Karbelis | 24 | Son | Clerk Office | Illinois |
| 8 | Marion Karbelis | 26 | Daughter | Actress | Illinois |
| 9 | Stella Karbelis | 17 | Daughter | — | Illinois |
| 10 | Stanley Karbelis | 16 | Son | — | Illinois |
| 11 | Eva G. Bennett | 39 | Head | Laboratory | Maine |
| 12 | Harold P. Bennett | 7 | Son | — | Illinois |
| 13 | Dewey G. Bennett | 6 | Son | — | Indiana |
| 14 | Eva C. Merrill | 62 | Mother | — | Maine |
| 15 | Thomas Lally | 49 | Head | Superintendent | Massachusetts |
| 16 | Mary E. Lally | 47 | Wife | — | Massachusetts |
| 17 | John Lally | 14 | Son | — | Illinois |
| 18 | Mary Lally | 13 | Daughter | — | Illinois |
| 19 | Brendan Lally | 19 | Son | Clerk Office | Illinois |
| 20 | Edward Lally | 17 | Son | Clerk Office | Illinois |
| 21 | Donald Bastiano | 60 | Head | Clerk Office | Florence Italy |
| 22 | Anna Bastiano | 55 | Wife | — | Naples Italy |
| 23 | Julia Bastiano | 19 | Daughter | Operator | New York |
| 24 | Virginia Barcy | 27 | Daughter | Waitress | New York |
| 25 | Percy Lomilo | 24 | Son-in-law | Craneman | Illinois |
| 26 | Sarah Lomilo | 24 | Daughter | — | New York |
| 27 | Norman Kreuder | 41 | Head | Painting | Illinois |
| 28 | Anna Kreuder | 32 | Wife | — | Nebraska |
| 29 | Norman J. Kreuder | 5 | Son | — | Illinois |
| 30 | James Kreuder | 3 | Son | — | Illinois |
| 31 | Mary K. Plummer | 72 | Mother-in-law | — | Illinois |
| 32 | John J. Sweeney | 44 | Head | Policeman | Illinois |
| 33 | Mary Sweeney THIS PERSON | 42 | Wife | — | South Dakota |
| 34 | Marie Sweeney | 22 | Daughter | Supervisor | Illinois |
| 35 | Eugenia Sweeney | 20 | Daughter | Clerk Office | Illinois |
| 36 | Lucille Sweeney | 17 | Daughter | Operator | Illinois |
| 37 | Bernard Sweeney | 16 | Son | — | Illinois |
| 38 | Francis Sweeney | 12 | Son | — | Illinois |
| 39 | Margaret Sweeney | 11 | Daughter | — | Illinois |
| 40 | Harry Sweeney | 8 | Son | — | Illinois |
| 41 | Virginia Sweeney | 6 | Daughter | — | Illinois |
| 42 | Robert Sweeney | 4 | Son | — | Illinois |
| 43 | William Tilson | 44 | Brother-in-law | Traveling | South Dakota |
| 44 | Newton Huggins | 46 | Head | Linotype | Illinois |
| 45 | Royal Huggins | 16 | Son | — | Illinois |
| 46 | Kenneth Huggins | 10 | Son | — | Illinois |
| 47 | Emil Nelsen | 27 | Son-in-law | Bellman | Wisconsin |
| 48 | Pearl Nelsen | 18 | Daughter | — | Illinois |
| 49 | Donald Nelsen | 0 | Grandson | — | Illinois |
| 50 | Margaret Jockinsen | 25 | Boarder | — | Wisconsin |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)