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 son (b.~1914), then head of a 9-person household.
Age 26
b. ~1914
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Healy |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Salesman |
| Industry | Wholesale Electr. App. |
| Class of Worker | PW |
| Hours Worked | 20 |
| Income (1939) | 850 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Salesman |
| Township / Ward | Chicago |
| Est. Birth Year | ~1914 |
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 |
|---|---|---|---|---|
| Annabelle Healy | Daughter | — | 24 | ~1916 |
| Virginia Healy | Daughter | — | 22 | ~1918 |
| Marjorie Healy | Daughter | — | 13 | ~1927 |
| John Healy | Head | — | 55 | ~1885 |
| Richard Healy | Son | — | 15 | ~1925 |
| James Healy | Son | — | 15 | ~1925 |
| Joseph Healy | Son | — | 26 | ~1914 |
| John Healy | Son | — | 26 | ~1914 |
| Anna Healy | Spouse | — | 52 | ~1888 |
Census Appearances
1930
Cook, Illinois
Son, age 15
Cook, Illinois · implied b. ~1915 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Healy |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 26
Cook-County, Illinois · implied b. ~1914 — 9 household members
| Surname | Healy |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Occupation | Salesman |
| Industry | Wholesale Electr. App. |
| Class of Worker | PW |
| Hours Worked | 20 |
| Income (1939) | 850 |
| Highest Grade | No 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 John Healy across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Healy
Son · 1940 · age 26 · b. ~1914 · Illinois
★ You are viewing this record
Sibling
James Healy
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Healy
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marjorie Healy
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Annabelle Healy
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Healy
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Virginia Healy
Sibling · 1940 · age 22
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
38 people indexed on this census page (nara:1940:m-t0627-00991-00708)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Harriet D Sodin | 60 | wife | — | Italy |
| 42 | James Sodin | 21 | son | Bartender | Illinois |
| 43 | Philia S Sodin | 10 | daughter | — | Italy |
| 44 | Robert S Sodin | 2 | grandson | — | Illinois |
| 45 | William Witteker | 81 | head | — | Germany |
| 46 | Dora Witteker | 72 | wife | — | Germany |
| 47 | John Knuth | 48 | son-in-law | Elevator Operator | Michigan |
| 48 | Dorothy D Knuth | 44 | daughter | — | Illinois |
| 49 | William Knuth | 9 | grandson | — | Illinois |
| 50 | Lorraine Knuth | 7 | granddaughter | — | Illinois |
| 51 | John Healy | 55 | head | Office Clerk | Illinois |
| 52 | Anna Healy | 52 | wife | — | Illinois |
| 53 | John Healy THIS PERSON | 26 | son | Salesman | Illinois |
| 54 | Joseph Healy | 26 | son | Bartender | Illinois |
| 55 | Annabelle Healy | 24 | daughter | Waitress | Illinois |
| 56 | Virginia Healy | 22 | daughter | Stenographer | Illinois |
| 57 | Richard Healy | 15 | son | — | Illinois |
| 58 | James Healy | 15 | son | — | Illinois |
| 59 | Marjorie Healy | 13 | daughter | — | Illinois |
| 60 | John Hurland | 59 | head | — | Illinois |
| 61 | Theresa Hurland | 52 | wife | — | Norway |
| 62 | Marian Hurland | 24 | daughter | Stenographer | Illinois |
| 63 | Neil Walker | 42 | lodger | Salesman | Illinois |
| 64 | Adolf Meckel | 13 | head | — | Germany |
| 65 | Albert Heinrich | 63 | brother-in-law | Buffer | Germany |
| 66 | Louise Heinrich | 58 | sister-in-law | — | Wisconsin |
| 67 | Elsie Heinrich | 23 | niece | — | Germany |
| 68 | Trygve Brown | 64 | head | — | Norway |
| 69 | Christina Brown | 60 | wife | — | Norway |
| 70 | Sophia Brown | 28 | daughter | Office Manager | Illinois |
| 71 | Jennie Jewell | 66 | head | — | Illinois |
| 72 | Edward Jewell | 46 | husband | Investigator | Illinois |
| 73 | Edward Jr. Jewell | 4 | son | — | Illinois |
| 74 | Robert Harvey | 29 | lodger | Apprentice Die Maker | Canada |
| 75 | Eleanor F O'Neil | 23 | lodger | Saleslady | Illinois |
| 76 | Thomas Lord | 39 | lodger | Assembler | Illinois |
| 77 | Alfred Harvey | 56 | lodger | Barber | Minnesota |
| 78 | Raymond Maluzinski | 21 | lodger | Machinist | 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)