MC
Margaret Casey — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Margaret Casey across the 1910, 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1864), then head of a 3-person household.
Age 76
b. ~1864
Female
Head
Born: Ireland
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Casey |
| Given Name | Margaret |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 76 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Additional Details | |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Highest Grade | 8 |
| 1935 Residence | Illinois |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Township / Ward | Chicago |
| Est. Birth Year | ~1864 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Margaret | Age | Birth yr |
|---|---|---|---|---|
| James Casey | Son | — | 41 | ~1899 |
| Margaret Casey | Daughter | — | 32 | ~1908 |
| Margaret Casey | Head | — | 76 | ~1864 |
Census Appearances
1910
Cook, Illinois
Other, age 45
Cook, Illinois · implied b. ~1865 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Casey |
| Given Name | Mary |
| Relationship to Head | Boarder |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Ireland |
| Years Married | 20 |
| Children Born | 1 |
| Children Living | 1 |
| Year of Immigration | 1870 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
Head, age 55
Cook, Illinois · implied b. ~1865 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Casey |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 55 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Eng |
| Home Owned/Rented | R |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1930
Cook, Illinois
Other, age 68
Cook, Illinois · implied b. ~1862 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Casey |
| Given Name | Mary |
| Relationship to Head | Mother |
| Sex | F |
| Color / Race | White |
| Age | 68 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| Year of Immigration | 1884 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read/Write | Yes |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
Cook-County, Illinois
Head, age 76
Cook-County, Illinois · implied b. ~1864 — 3 household members
| Surname | Casey |
| Given Name | Margaret |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 76 |
| Marital Status | Widowed |
| Birthplace | Ireland |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Class of Worker | 0 |
| Hours Worked | 0 |
| Highest Grade | 8 |
| 1935 Residence | Illinois |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
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 Margaret Casey across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Margaret Casey
Head · 1940 · age 76 · b. ~1864 · Illinois
★ You are viewing this record
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-t0627-00932-00805)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Cordelia Wetzel | 60 | Head | Teacher | Missouri |
| 42 | Ella Ella Wetzel | 59 | Sister | — | Missouri |
| 43 | Sina Longford | 42 | Head | Teacher | Missouri |
| 44 | Orin Damer | 29 | Head | Lawyer | W. Virginia |
| 45 | Lillian Damer | 27 | Wife | — | Michigan |
| 46 | John Damer | 2 | Son | — | Illinois |
| 47 | Robert J. Flusk | 36 | Head | Salesman | Iowa |
| 48 | Catherine Flusk | 32 | Wife | — | Illinois |
| 49 | Robert Jr. Flusk | 3 | Son | — | Illinois |
| 50 | Francis Ulrick | 62 | Mother in law | — | Ohio |
| 51 | Fred C. Wulf | 54 | Head | Painter | Illinois |
| 52 | Nora Wulf | 51 | Wife | — | Michigan |
| 53 | Fred Jr. Wulf | 18 | Son | — | Illinois |
| 54 | Robert Wulf | 13 | Son | — | Illinois |
| 55 | Frederick Zoller | 29 | Head | Clerk | Illinois |
| 56 | Mary Zoller | 26 | Wife | — | Illinois |
| 57 | William Zoller | 2 | Son | — | Illinois |
| 58 | Richard Zoller | 0 | Son | — | Illinois |
| 59 | Gust W. Hoglund | 49 | Head | Janitor | Sweden |
| 60 | Esther Hoglund | 53 | Wife | — | Sweden |
| 61 | Exylda Ryan | 53 | Head | — | Illinois |
| 62 | Thomas J. Ryan | 33 | Son | Sales Clerk | Illinois |
| 63 | Matthew P. Ryan | 27 | Son | Selling | Illinois |
| 64 | Herbert H. Henderson | 45 | Head | Draftsman | Iowa |
| 65 | Loraine Henderson | 45 | Wife | Dressmaker | Indiana |
| 66 | Edward Pringle | 34 | Head | Busman | Pennsylvania |
| 67 | Adele Pringle | 29 | Wife | — | Illinois |
| 68 | Frank Singl | 36 | Head | Salesman | Russia |
| 69 | Lily Singl | 34 | Wife | — | Poland |
| 70 | Alice Callahan | 72 | Head | — | Illinois |
| 71 | Vincent Duety | 55 | Head | Estimator | Ohio |
| 72 | Rose Duety | 40 | Wife | — | Indiana |
| 73 | Mildred Cavanaugh | 39 | Head | Social Worker | Illinois |
| 74 | Margaret Wentz | 37 | Head | Secretary | Illinois |
| 75 | Arthur Hess | 26 | Head | Lawyer | Illinois |
| 76 | Rose Mary Hess | 26 | Wife | Stenographer | Illinois |
| 77 | Margaret Casey THIS PERSON | 76 | Head | — | Ireland |
| 78 | Margaret Jr. Casey | 32 | Daughter | Typist | Illinois |
| 79 | James Casey | 41 | Son | — | Illinois |
| 80 | Gerhart Lieberts | 37 | Head | Structural Engineer | South Dakota |
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)