JH
John Healy — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this John Healy across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1908), then head of a 9-person household.
Age 32
b. ~1908
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Healy |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Laboring |
| Industry | Streets |
| Class of Worker | PW |
| Hours Worked | 35 |
| Income (1939) | 828 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Laboring |
| Township / Ward | Chicago |
| Est. Birth Year | ~1908 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Margaret Healy | Daughter | — | 6 | ~1934 |
| Mary Healy | Daughter | — | 14 | ~1926 |
| Sabina Healy | Daughter | — | 9 | ~1931 |
| John Healy | Head | — | 32 | ~1908 |
| Charlotte Healy | Son | — | 10 | ~1930 |
| Lawrence Healy | Son | — | 3 | ~1937 |
| Francis Healy | Son | — | 7 | ~1933 |
| Thomas Healy | Son | — | 10 | ~1930 |
| Juliana Healy | Spouse | — | 32 | ~1908 |
Census Appearances
1930
Cook, Illinois
Other, age 21
Cook, Illinois · implied b. ~1909 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Healey |
| Given Name | John |
| Relationship to Head | Brother |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Laborer |
| Industry | Contractor |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Head, age 32
Cook-County, Illinois · implied b. ~1908 — 9 household members
| Surname | Healy |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Occupation | Laboring |
| Industry | Streets |
| Class of Worker | PW |
| Hours Worked | 35 |
| Income (1939) | 828 |
| Highest Grade | H-4 |
| 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 John Healy across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Healy
Head · 1940 · age 32 · b. ~1908 · Illinois
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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-t0627-00953-00267)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Anna Mcgrath | 68 | Head | — | Germany |
| 2 | Fred Mcgrath | 33 | Son | Electrician | Illinois |
| 3 | Minnie Mcgrath | 27 | Daughter | Clerk | Illinois |
| 4 | John Healy THIS PERSON | 32 | Head | Laboring | Illinois |
| 5 | Juliana Healy | 32 | Wife | — | Ireland |
| 6 | Thomas Healy | 10 | Son | — | England |
| 7 | Mary Healy | 14 | Daughter | — | Illinois |
| 8 | Charlotte Healy | 10 | Son | — | Illinois |
| 9 | Sabina Healy | 9 | Daughter | — | Illinois |
| 10 | Francis Healy | 7 | Son | — | Illinois |
| 11 | Margaret Healy | 6 | Daughter | — | Illinois |
| 12 | Lawrence Healy | 3 | Son | — | Illinois |
| 13 | Alex Petrauskis | 48 | Head | Laborer | Lithuania |
| 14 | Josephine Petrauskis | 45 | Wife | — | Lithuania |
| 15 | Alex Jr. Petrauskis | 25 | Son | Fireman | Lithuania |
| 16 | Walter Petrauskis | 23 | Son | Helper | Lithuania |
| 17 | Adolph Bohnenberger | 53 | Head | — | Germany |
| 18 | Emily Bohnenberger | 51 | Wife | — | Germany |
| 19 | Melanie Lebrecht | 32 | Daughter | Clerk | Germany |
| 20 | Betty Lebrecht | 9 | Granddaughter | — | Illinois |
| 21 | Eleanor Lebrecht | 8 | Granddaughter | — | Illinois |
| 22 | Frederick Lebrecht | 4 | Grandson | — | Pennsylvania |
| 23 | George Monkus | 48 | Head | Iceman | Lithuania |
| 24 | Sophie Monkus | 48 | Wife | — | Lithuania |
| 25 | Arthur Liberacki | 24 | Son-in-law | Clerk | Illinois |
| 26 | Bernice Liberacki | 23 | Daughter | Bookkeeper | Illinois |
| 27 | Ernest R. Knutson | 56 | Head | Machinist | Sweden |
| 28 | Ella Knutson | 55 | Wife | — | Sweden |
| 29 | Ray Knutson | 33 | Son | Buyer | Sweden |
| 30 | Leona Knutson | 32 | Wife | — | Illinois |
| 31 | Ronald Knutson | 12 | Son | — | Illinois |
| 32 | Barbara Knutson | 3 | Daughter | — | Illinois |
| 33 | Paul Mikaliunas | 44 | Head | Butcher | Lithuania |
| 34 | Doris Mikaliunas | 39 | Wife | Clerk | Lithuania |
| 35 | Henry Frickmann | 70 | Head | Machinist | Germany |
| 36 | Barbara Frickmann | 68 | Wife | — | Illinois |
| 37 | Gertrude Patynaski | 37 | Daughter | — | Illinois |
| 38 | Lorraine Patynaski | 12 | Granddaughter | — | Illinois |
| 39 | Thomas A. Mulley | 42 | Head | Lieutenant | Illinois |
| 40 | Margaret Mulley | 38 | Wife | Beauty Operator | 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)