JH
John Hays — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Cook, Illinois
Our Model Tree links this John Hays across the 1930 and 1940 US Censuses in Cook, Illinois (XGBoost, ~Confirmed) — first a son (b.~1913), then head of a 9-person household.
Age 17
b. ~1913
Male
Son
Born: Illinois
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | Hays |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Additional Details | |
| Occupation | Messenger |
| Industry | Law Office |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Messenger |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1913 |
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 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Lillian Hays | Spouse | — | 39 | ~1891 |
| Mary Hays | Daughter | — | 20 | ~1910 |
| John Hays | Head | — | 46 | ~1884 |
| Kate Hays | Daughter | — | 19 | ~1911 |
| Rose Hays | Daughter | — | 2 | ~1928 |
| Joseph Hays | Son | — | 9 | ~1921 |
| John Hays | Son | — | 17 | ~1913 |
| Mildred Hays | Daughter | — | 12 | ~1918 |
| Frank Hays | Son | — | 6 | ~1924 |
Census Appearances
1930
Cook, Illinois
Son, age 17
Cook, Illinois · implied b. ~1913 — 9 household members
| Surname | Hays |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Messenger |
| Industry | Law Office |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Head, age 27
Cook-County, Illinois · implied b. ~1913 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hyss |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Occupation | Manager |
| Industry | Public Garage |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1560 |
| Highest Grade | H-2 |
| 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 Hays across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Hays
Son · 1930 · age 17 · b. ~1913 · Illinois
★ You are viewing this record
Sibling
Rose Hays
Sibling · 1930 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Hays
Sibling · 1930 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Hays
Sibling · 1930 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frank Hays
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mildred Hays
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kate Hays
Sibling · 1930 · age 19
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
1930 US Federal Census — Cook, Illinois
Open full size
1930 US Federal Census — Cook, Illinois
Page Contents
50 people indexed on this census page (ia:1930:illinoiscensus00reel436:0610)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Daughter Oliver | 5 | Daughter | — | Texas |
| 2 | Son Angel | 3 | Son | — | Texas |
| 3 | Juan Rodriguez | 28 | Boarder | Laborer | Mexico |
| 4 | Candelario Guajardo | 19 | Boarder | Laborer | Mexico |
| 5 | Lucio Vidaurri | 24 | Boarder | Laborer | Mexico |
| 6 | Joseph Santovera | 38 | Head | Laborer | Mexico |
| 7 | Lupe Santovera | 28 | Wife | — | Mexico |
| 8 | Mario Santovera | 3 | Daughter | — | Illinois |
| 9 | Tony Santovera | 2 | Son | — | Illinois |
| 10 | Jaytha Santovera | 1 | Daughter | — | Illinois |
| 11 | Frank Courvosti | 42 | Head | Mechanic | Illinois |
| 12 | Alexander Cartulvicz | 38 | Boarder | Pharmacist | Poland |
| 13 | John Gocinski | 49 | Head | Salesman | Poland |
| 14 | Stephanie Gocinski | 47 | Wife | — | Poland |
| 15 | Walter Gocinski | 18 | Son | — | Illinois |
| 16 | Sadie Gocinski | 15 | Son | — | Illinois |
| 17 | Casimir Gocinski | 14 | Son | — | Illinois |
| 18 | Henry Gocinski | 11 | Son | — | Illinois |
| 19 | John Hays | 46 | Head | Janitor | Illinois |
| 20 | Lillian Hays | 39 | Wife | — | Illinois |
| 21 | Mary Hays | 20 | Daughter | Clerk | Illinois |
| 22 | Kate Hays | 19 | Daughter | Filing | Illinois |
| 23 | John Hays THIS PERSON | 17 | Son | Messenger | Illinois |
| 24 | Mildred Hays | 12 | Daughter | — | Illinois |
| 25 | Joseph Hays | 9 | Son | — | Illinois |
| 26 | Frank Hays | 6 | Son | — | Illinois |
| 27 | Rose Hays | 2 | Daughter | — | Illinois |
| 28 | Tony Korifa | 29 | Head | Salesman | Greece |
| 29 | Stanley Krolikowski | 37 | Head | Salesman | Poland |
| 30 | Lillian Krolikowski | 36 | Wife | — | Illinois |
| 31 | Clemons Krolikowski | 10 | Son | — | Illinois |
| 32 | Atilano Rodrius | 30 | Head | Laborer | Mexico |
| 33 | Stephanie Rodrius | 32 | Wife | — | Mexico |
| 34 | Lupe Rodrius | 7 | Son | — | Texas |
| 35 | Fandula Rodrius | 5 | Daughter | — | Mexico |
| 36 | Felix Navaro | 22 | Boarder | Laborer | Mexico |
| 37 | Henry Vasquez | 23 | Boarder | Laborer | Mexico |
| 38 | Abel Martinez | 27 | Boarder | Laborer | Mexico |
| 39 | Manuel Garcia | 34 | Boarder | Laborer | Mexico |
| 40 | Joseph Campos | 44 | Boarder | Laborer | Mexico |
| 41 | Louis Nalva | 29 | Boarder | Laborer | Mexico |
| 42 | Joe Jimenez | 32 | Boarder | Laborer | Mexico |
| 43 | Joe Durantio | 20 | Boarder | Laborer | Mexico |
| 44 | Lupe Garcia | 31 | Boarder | Laborer | Mexico |
| 45 | Victor Anzuna | 29 | Head | Laborer | Mexico |
| 46 | Maria Anzuna | 21 | Wife | — | Mexico |
| 47 | Cajetana Anzuna | 7 | Daughter | — | Mexico |
| 48 | John Anzuna | 2 | Son | — | Mexico |
| 49 | Samuel Anzuna | 2 | Son | Laborer | Mexico |
| 50 | Theresa Anzuna | 1 | Daughter | — | Mexico |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)