MK
Mary Keenan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Mary Keenan across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1929), then head of a 5-person household.
Age 11
b. ~1929
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Keenan |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Highest Grade | No 3 |
| 1935 Residence | Same Place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago |
| Est. Birth Year | ~1929 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Daisy Keenan | Spouse | — | 32 | ~1908 |
| Greta Keenan | Daughter | — | 5 | ~1935 |
| Mary Keenan | Daughter | — | 11 | ~1929 |
| John Keenan | Head | — | 44 | ~1896 |
| Dorothy Keenan | Daughter | — | 10 | ~1930 |
Census Appearances
1930
Cook, Illinois
Daughter, age 2
Cook, Illinois · implied b. ~1928 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Keenan |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Occupation | none |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Daughter, age 11
Cook-County, Illinois · implied b. ~1929 — 5 household members
| Surname | Keenan |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Highest Grade | No 3 |
| 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 Keenan across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Keenan
Daughter · 1940 · age 11 · b. ~1929 · Illinois
★ You are viewing this record
Sibling
Dorothy Keenan
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Greta Keenan
Sibling · 1940 · age 5
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-t0627-00927-00476)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | John D. Ryan | 22 | Head | Shipping Clerk | Illinois |
| 42 | Catherine Ryan | 22 | Wife | — | Irish Free State |
| 43 | Patricia Ryan | 2 | Daughter | — | Illinois |
| 44 | Joan Ryan | 1 | Daughter | — | Illinois |
| 45 | Charles Barr | 59 | Head | File Clerk | Illinois |
| 46 | Micheal Labia | 48 | Head | Plumber | New Jersey |
| 47 | Amelia Stage | 55 | Head | Waitress | Scotland |
| 48 | Findley Stage | 20 | Son | File Clerk | Wyoming |
| 49 | Clarence Meredith | 37 | Head | Mechanic | Texas |
| 50 | Dorothy Meredith | 28 | Wife | Typist | Illinois |
| 51 | Harry Davis | 48 | Head | Laborer | Illinois |
| 52 | John Dostan | 45 | Head | Service Man | Kentucky |
| 53 | Sophia Dostan | 37 | Wife | — | Colorado |
| 54 | William Dostan | 18 | Son | Laborer | Colorado |
| 55 | Emma Dostan | 16 | Daughter | Saleslady | Washington |
| 56 | Harry Dostan | 14 | Son | Paper Boy | Idaho |
| 57 | Ruth Pratt | 20 | Lodger | Mountain Girl | Kansas |
| 58 | John Keenan | 44 | Head | Laborer | Holland |
| 59 | Daisy Keenan | 32 | Wife | — | New Hampshire |
| 60 | Mary Keenan THIS PERSON | 11 | Daughter | — | Illinois |
| 61 | Dorothy Keenan | 10 | Daughter | — | Illinois |
| 62 | Greta Keenan | 5 | Daughter | — | Illinois |
| 63 | Mary Scheide | 50 | Head | Housekeeper | Germany |
| 64 | Roy Scheide | 16 | Son | File Clerk | Illinois |
| 65 | Carl Scheide | 12 | Son | — | Illinois |
| 66 | Robert Scheide | 7 | Son | — | Illinois |
| 67 | Isaac Berson | 48 | Head | Painter | Russia |
| 68 | Frieda Berson | 30 | Wife | — | Illinois |
| 69 | Joseph Berson | 1 | Son | — | Illinois |
| 70 | William Schevers | 51 | Head | Wall Man | Illinois |
| 71 | Clara Schevers | 52 | Wife | — | Illinois |
| 72 | Rose Young | 39 | Head | — | Illinois |
| 73 | Dorothy Young | 18 | Daughter | — | Illinois |
| 74 | Catherine Weiss | 24 | Head | Typist | Illinois |
| 75 | Theresa Weiss | 66 | Mother | — | Illinois |
| 76 | Robert Hastings | 26 | Head | Assistant Foreman | Illinois |
| 77 | Jessie Hastings | 26 | Wife | File Clerk | Illinois |
| 78 | James Hastings | 4 | Son | — | Illinois |
| 79 | John Phillips | 42 | Head | Bartender | Irish Free State |
| 80 | Theresa Phillips | 42 | Wife | Maid | Illinois |
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)