MK
Mary Kearney — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Mary Kearney across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1910), then head of a 8-person household.
Age 30
b. ~1910
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| 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 |
| Additional Details | |
| 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 |
| Occupation | Typist |
| 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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Pat Kearney | Head | — | 71 | ~1869 |
| Thos Kearney | Son | — | 19 | ~1921 |
| John Kearney | Son | — | 29 | ~1911 |
| Mary Kearney | Daughter | — | 30 | ~1910 |
| Patrick Kearney | Son | — | 25 | ~1915 |
| James Kearney | Son | — | 23 | ~1917 |
| Peter Kearney | Son | — | 27 | ~1913 |
| Anne Kearney | Spouse | — | 57 | ~1883 |
Census Appearances
Daughter, age 20
Cook, Illinois · implied b. ~1910 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| 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 |
1940
Cook-County, Illinois
Daughter, age 30
Cook-County, Illinois · implied b. ~1910 — 8 household members
| 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 Kearney across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Kearney
Daughter · 1940 · age 30 · b. ~1910 · Illinois
★ You are viewing this record
Sibling
Patrick Kearney
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Kearney
Sibling · 1940 · age 29
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Peter Kearney
Sibling · 1940 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Kearney
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thos Kearney
Sibling · 1940 · age 19
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 — Cook-County, Illinois
Open full size
1940 US Federal Census — Cook-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00987-00854)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Balassa Mary Balassa | 65 | Sister | — | Poland |
| 42 | Balassa Veronica Balassa | 63 | Sister | — | Poland |
| 43 | Balassa Angela Balassa | 53 | Sister | Maid | Illinois |
| 44 | Steve Belassa | 52 | Head | Mgr Operater | Illinois |
| 45 | Mabel Belassa | 48 | Wife | — | Illinois |
| 46 | Steve Jr. Belassa | 27 | Son | Factory Hand | Illinois |
| 47 | Donald Belassa | 23 | Son | New Worker | Illinois |
| 48 | Paul D. Peterson | 59 | Boarder | Inspector | Illinois |
| 49 | Pat Kearney | 71 | Head | — | Eire |
| 50 | Anne Kearney | 57 | Wife | — | Eire |
| 51 | Mary Kearney THIS PERSON | 30 | Daughter | Typist | Illinois |
| 52 | John Kearney | 29 | Son | Laborer | Illinois |
| 53 | Peter Kearney | 27 | Son | Mill Hand | Illinois |
| 54 | Patrick Kearney | 25 | Son | Machinist | Illinois |
| 55 | James Kearney | 23 | Son | Roofer | Illinois |
| 56 | Thos Kearney | 19 | Son | Clerk | Illinois |
| 57 | Raymond Westman | 26 | Head | Clerk | Illinois |
| 58 | Ruth A. Westman | 25 | Wife | — | Indiana |
| 59 | Ann Westman | 5 | Daughter | — | Illinois |
| 60 | Carol Westman | 1 | Daughter | — | Illinois |
| 61 | Fanny Boyd | 44 | Mother in law | Counter Girl | Indiana |
| 62 | Donna Boyd | 8 | Sister in law | — | Illinois |
| 63 | Frank Klemm | 46 | Head | Machinist | Illinois |
| 64 | Ella Klemm | 38 | Wife | — | Illinois |
| 65 | Howard Klemm | 17 | Son | — | Illinois |
| 66 | Doris Klemm | 16 | Daughter | — | Illinois |
| 67 | Peter D. Raad | 60 | Head | Jourman | Illinois |
| 68 | Gertrude Raad | 35 | Daughter | Advertising Clerk | Illinois |
| 69 | Herbert G. Raad | 33 | Son | Loan Clerk | Illinois |
| 70 | Albert Schramm | 56 | Head | Time Keeper | Illinois |
| 71 | Eloise Schramm | 50 | Wife | — | Indiana |
| 72 | Alex Jr. Schramm | 15 | Son | — | Illinois |
| 73 | Frances M. Schramm | 13 | Daughter | — | Illinois |
| 74 | Jean Schramm | 8 | Daughter | — | Illinois |
| 75 | Carl Mann | 20 | Step son | Mechanic | Illinois |
| 76 | Donald Westphal | 20 | Lodger | Photographer | Wisconsin |
| 77 | Wm Davies | 58 | Head | Inspector | Wales |
| 78 | Jane Davies | 50 | Wife | — | Wales |
| 79 | Richard Knowles | 20 | Son in law | Leather | California |
| 80 | Nancy Knowles | 20 | Daughter | New Worker | Wales |
Related Census Records
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)