MH
Mary Healy — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Mary Healy across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a spouse (b.~1899), then head of a 8-person household.
Age 41
b. ~1899
Female
Spouse
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Healy |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same Place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1899 |
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 |
|---|---|---|---|---|
| Alice Healy | Daughter | — | 19 | ~1921 |
| Jennie Healy | Daughter | — | 18 | ~1922 |
| Allan Healy | Head | — | 49 | ~1891 |
| Frank Healy | Son | — | 13 | ~1927 |
| Raymond Healy | Son | — | 9 | ~1931 |
| Robert Healy | Son | — | 17 | ~1923 |
| Edward Healy | Son | — | 15 | ~1925 |
| Mary Healy | Spouse | — | 41 | ~1899 |
Census Appearances
1930
Cook, Illinois
Spouse, age 30
Cook, Illinois · implied b. ~1900 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Healy |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 26 |
| Father's Birthplace | Poland |
| Mother's Birthplace | Poland |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Spouse, age 41
Cook-County, Illinois · implied b. ~1899 — 8 household members
| Surname | Healy |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Class of Worker | 0 |
| Highest Grade | 8 |
| 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 Healy across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Healy
Spouse · 1940 · age 41 · b. ~1899 · 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
39 people indexed on this census page (nara:1940:m-t0627-00947-00372)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 42 | John Nemeth | 38 | Head | Foreman | Hungary |
| 43 | Catherine Nemeth | 37 | Wife | — | Pennsylvania |
| 44 | John Nemeth | 11 | Son | — | New Jersey |
| 45 | Ester Nemeth | 71 | Mother | — | Hungary |
| 46 | Theodore Wingert | 36 | Head | Foreman | Illinois |
| 47 | Charles Wingert | 36 | Wife | — | Illinois |
| 48 | Frank Wingert | 17 | Son | — | Illinois |
| 49 | Allan Healy | 49 | Head | Maintainer | Indiana |
| 50 | Mary Healy THIS PERSON | 41 | Wife | — | Illinois |
| 51 | Alice M. Healy | 19 | Daughter | — | Illinois |
| 52 | Jennie Healy | 18 | Daughter | — | Illinois |
| 53 | Robert Healy | 17 | Son | Gas Station | Illinois |
| 54 | Edward Healy | 15 | Son | — | Illinois |
| 55 | Frank Healy | 13 | Son | — | Illinois |
| 56 | Raymond Healy | 9 | Son | — | Illinois |
| 57 | Anna Zitny | 45 | Head | — | Illinois |
| 58 | Helen Zitny | 19 | Daughter | Waitress | Illinois |
| 59 | Antoinette Zitny | 24 | Daughter | Stenographer | Illinois |
| 60 | Charles Galamo | 51 | Head | Switch Man | Italy |
| 61 | Alfred Jensen | 37 | Head | Machinist | Iowa |
| 62 | Anna Jensen | 36 | Wife | — | Illinois |
| 63 | Betty Ann Jensen | 13 | Daughter | — | Iowa |
| 64 | Alfred Jensen | 11 | Son | — | Iowa |
| 65 | Paul Jensen | 9 | Son | — | Iowa |
| 66 | Phyllis Jensen | 6 | Daughter | — | Illinois |
| 67 | Paul Ewick | 53 | Head | — | Ukraine |
| 68 | Herman Passberg | 67 | Head | Stoner | Hungary |
| 69 | Casie Passberg | 54 | Wife | — | Hungary |
| 70 | Achille Libertone | 46 | Head | Tavern Owner | Italy |
| 71 | Marie Libertone | 40 | Wife | — | Italy |
| 72 | Peter Libertone | 17 | Son | New Worker | Italy |
| 73 | Clara Libertone | 15 | Daughter | — | Illinois |
| 74 | Leana Libertone | 13 | Daughter | — | Illinois |
| 75 | Nick Da Vinci | 50 | Head | — | Italy |
| 76 | Mary Da Vinci | 40 | Wife | — | Illinois |
| 77 | Joseph Da Vinci | 18 | Son | — | Illinois |
| 78 | Catherine Da Vinci | 5 | Daughter | — | Illinois |
| 79 | Theodore Varty | 48 | Head | Conductor | Illinois |
| 80 | Anna Varty | 43 | Wife | — | Bohemia |
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)