MC
Mary Carney — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Cook, Illinois
Our Model Tree links this Mary Carney across the 1930 and 1940 US Censuses in Cook, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1910), then head of a 7-person household.
Age 20
b. ~1910
Female
Daughter
Born: Illinois
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | Carney |
| Given Name | Mary E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1910 |
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 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Carney | Daughter | — | 20 | ~1910 |
| Frank Carney | Head | — | 45 | ~1885 |
| Ann Carney | Daughter | — | 6 | ~1924 |
| Jane Carney | Daughter | — | 18 | ~1912 |
| Ruth Carney | Daughter | — | 22 | ~1908 |
| Margaret Carney | Spouse | — | 46 | ~1884 |
| John Carney | Son | — | 12 | ~1918 |
Census Appearances
1930
Cook, Illinois
Daughter, age 20
Cook, Illinois · implied b. ~1910 — 7 household members
| Surname | Carney |
| Given Name | Mary E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
Daughter, age 30
Cook-County, Illinois · implied b. ~1910 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kearney |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Occupation | Typist |
| Industry | Letter Service |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 695 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Carney across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Carney
Daughter · 1930 · age 20 · b. ~1910 · Illinois
★ You are viewing this record
Sibling
John Carney
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jane Carney
Sibling · 1930 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ann Carney
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Carney
Sibling · 1930 · 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
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:illinoiscensus00reel425:0209)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Hiram E Keck | 53 | Head | Manager | Illinois |
| 2 | Evelyn I Keck | 53 | Wife | — | Illinois |
| 3 | Frank K Cole | 46 | Head | Salesman | Illinois |
| 4 | Margaret Cole | 41 | Wife | — | Illinois |
| 5 | Frank K Jr Cole | 16 | Son | — | Illinois |
| 6 | John Cole | 14 | Son | — | Illinois |
| 7 | Robert Cole | 10 | Son | — | Illinois |
| 8 | Margaret W Cole | 4 | Daughter | — | Illinois |
| 9 | Martha Cole | 2 | Daughter | — | Illinois |
| 10 | Nora Surgue | 26 | Servant | Servant | Irish Free State |
| 11 | Nellie Surgue | 57 | Servant | Cook | New York |
| 12 | Thomas J Ryan | 50 | Head | Proprietor | Irish Free State |
| 13 | Mary E Ryan | 35 | Wife | — | Illinois |
| 14 | John J Ryan | 9 | Son | — | Illinois |
| 15 | Mary E Ryan | 8 | Daughter | — | Illinois |
| 16 | Thomas J Jr Ryan | 6 | Son | — | Illinois |
| 17 | Lucille C Ryan | 4 | Daughter | — | Illinois |
| 18 | Alice H Ryan | 3 | Daughter | — | Illinois |
| 19 | Robert J Ryan | 1 | Son | — | Illinois |
| 20 | James Ryan | 44 | Brother | — | Irish Free State |
| 21 | James W Heberly | 49 | Head | Master Mechanic | Pennsylvania |
| 22 | Hannah Heberly | 44 | Wife | — | Illinois |
| 23 | Harriet C Heberly | 20 | Daughter | — | Illinois |
| 24 | James Heberly | 19 | Son | — | Illinois |
| 25 | Kenneth Heberly | 16 | Son | — | Illinois |
| 26 | Marion M Heberly | 13 | Son | — | Illinois |
| 27 | Milton Heberly | 10 | Son | — | Illinois |
| 28 | Andrew Smith | 43 | Head | Painter | Pennsylvania |
| 29 | Lydia Smith | 36 | Wife | — | Missouri |
| 30 | Andrew Jr Smith | 13 | Son | — | Missouri |
| 31 | Lydia Smith | 10 | Daughter | — | Illinois |
| 32 | Robert Smith | 7 | Son | — | Illinois |
| 33 | Mary G Cherry | 27 | Boarder | Nurse | Germany |
| 34 | Frank J Carney | 45 | Head | Superintendent | Ohio |
| 35 | Margaret Carney | 46 | Wife | — | Ohio |
| 36 | Ruth A Carney | 22 | Daughter | — | Illinois |
| 37 | Mary E Carney THIS PERSON | 20 | Daughter | — | Illinois |
| 38 | Jane L Carney | 18 | Daughter | — | Illinois |
| 39 | John B Carney | 12 | Son | — | Illinois |
| 40 | Ann G Carney | 6 | Daughter | — | Illinois |
| 41 | Joseph B Reilly | 50 | Head | Salesman | Illinois |
| 42 | Mary E Reilly | 33 | Wife | — | England |
| 43 | Joseph T Reilly | 13 | Son | — | Illinois |
| 44 | Alice M Reilly | 11 | Daughter | — | Illinois |
| 45 | Robert J Reilly | 6 | Son | — | Illinois |
| 46 | Bertha E Hilland | 61 | Servant | Servant | Illinois |
| 47 | Harry G Cox | 63 | Head | Salesman | Minnesota |
| 48 | Mary E Cox | 61 | Wife | — | Illinois |
| 49 | Emil C Lederer | 38 | Head | Salesman | Illinois |
| 50 | Edith Lederer | 35 | Wife | — | Illinois |
Related Census Records
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)