MK
Mary Keating — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Mary Keating across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a daughter (b.~1925), then head of a 6-person household.
Age 15
b. ~1925
Female
Daughter
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Keating |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Income (1939) | 0 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same house |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago |
| Est. Birth Year | ~1925 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| James Keating | Son | — | 16 | ~1924 |
| Catherine Keating | Spouse | — | 44 | ~1896 |
| William Keating | Son | — | 12 | ~1928 |
| John Keating | Son | — | 18 | ~1922 |
| James Keating | Head | — | 47 | ~1893 |
| Mary Keating | Daughter | — | 15 | ~1925 |
Census Appearances
1930
Cook, Illinois
Daughter, age 4
Cook, Illinois · implied b. ~1926 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Keating |
| Given Name | Mary B. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Daughter, age 15
Cook-County, Illinois · implied b. ~1925 — 6 household members
| Surname | Keating |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Income (1939) | 0 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same house |
| 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 Keating across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Keating
Daughter · 1940 · age 15 · b. ~1925 · Illinois
★ You are viewing this record
Sibling
William Keating
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Keating
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Keating
Sibling · 1940 · age 16
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-t0627-00979-00746)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Helen Mcdrought | 38 | Sister-in-law | — | Illinois |
| 42 | William Carroll | 36 | Head | Civil Engineer | Illinois |
| 43 | Annabelle Carroll | 35 | Wife | — | Illinois |
| 44 | Mary Carroll | 9 | Daughter | — | Illinois |
| 45 | Patricia Carroll | 7 | Daughter | — | Illinois |
| 46 | William Carroll | 5 | Son | — | Illinois |
| 47 | John Carroll | 4 | Son | — | Illinois |
| 48 | James Keating | 47 | Head | Police Officer | Illinois |
| 49 | Catherine Keating | 44 | Wife | — | Irish Free State |
| 50 | John Keating | 18 | Son | — | Illinois |
| 51 | James Keating | 16 | Son | — | Illinois |
| 52 | Mary Keating THIS PERSON | 15 | Daughter | — | Illinois |
| 53 | William Keating | 12 | Son | — | Illinois |
| 54 | William Meyer | 39 | Head | Maintenance Man | Illinois |
| 55 | Emma Meyer | 35 | Wife | — | Pennsylvania |
| 56 | Lorraine Meyer | 13 | Daughter | — | Illinois |
| 57 | Nancy Meyer | 4 | Daughter | — | Illinois |
| 58 | Charles Baro | 67 | Head | — | Austria-Hungary |
| 59 | Mary Baro | 57 | Wife | — | Austria-Hungary |
| 60 | Joseph Baro | 24 | Son | Packer | Pennsylvania |
| 61 | Steven Baro | 23 | Son | Letter Hand | Pennsylvania |
| 62 | Frank Baro | 20 | Son | Printer | Illinois |
| 63 | Harry Cesarotti | 26 | Son-in-law | Clerk | Illinois |
| 64 | Janette Cesarotti | 29 | Daughter | — | Austria-Hungary |
| 65 | Yvonne Cesarotti | 3 | Granddaughter | — | Illinois |
| 66 | William Culhane | 33 | Head | Wireman | Irish Free State |
| 67 | Anna Culhane | 30 | Wife | — | Irish Free State |
| 68 | James Culhane | 11 | Son | — | Illinois |
| 69 | William Culhane | 9 | Son | — | Illinois |
| 70 | James Crandall | 31 | Head | Clerk | Illinois |
| 71 | Nona Crandall | 29 | Wife | — | California |
| 72 | James Crandall | 8 | Son | — | Illinois |
| 73 | Joyce Crandall | 6 | Daughter | — | Illinois |
| 74 | George Sims | 74 | Lodger | Conductor | Illinois |
| 75 | Abraham Prescott | 64 | Lodger | Conductor | England |
| 76 | William Gallagher | 48 | Head | Watchman | Ohio |
| 77 | Belle Gallagher | 45 | Wife | — | Illinois |
| 78 | Carrie Gallagher | 13 | Daughter | — | Illinois |
| 79 | Robert Gallagher | 12 | Son | — | Illinois |
| 80 | Joanne Gallagher | 10 | Daughter | — | 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)