JL
John Link — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this John Link across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1927), then head of a 7-person household.
Age 13
b. ~1927
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Link |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Highest Grade | 7 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1927 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Link | Head | — | 52 | ~1888 |
| Catherine Link | Spouse | — | 35 | ~1905 |
| Virginia Link | Daughter | — | 3 | ~1937 |
| Paul Link | Son | — | 6 | ~1934 |
| Harry Link | Son | — | 9 | ~1931 |
| John Link | Son | — | 13 | ~1927 |
| Margaret Link | Daughter | — | 14 | ~1926 |
Census Appearances
1930
Cook, Illinois
Son, age 3
Cook, Illinois · implied b. ~1927 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Link |
| Given Name | John Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Germany |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 13
Cook-County, Illinois · implied b. ~1927 — 7 household members
| Surname | Link |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Highest Grade | 7 |
| 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 Link across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Link
Son · 1940 · age 13 · b. ~1927 · Illinois
★ You are viewing this record
Sibling
Virginia Link
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paul Link
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Link
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harry Link
Sibling · 1940 · age 9
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
40 people indexed on this census page (nara:1940:m-t0627-01016-00416)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Peter Quinn | 48 | Head | Park Laborer | Irish Free State |
| 2 | Catherine Quinn | 46 | Wife | — | Irish Free State |
| 3 | Marie Quinn | 21 | Daughter | Telephone Operator | Illinois |
| 4 | John Quinn | 19 | Son | Cloth Sorter | Illinois |
| 5 | William Quinn | 12 | Son | — | Illinois |
| 6 | Teresa Quinn | 10 | Daughter | — | Illinois |
| 7 | Nicholas Trahan | 50 | Head | — | Illinois |
| 8 | Dorothy Trahan | 38 | Wife | — | New York |
| 9 | Constance Trahan | 9 | Daughter | — | Illinois |
| 10 | Richard Billfield | 68 | Head | Sign Painter | Illinois |
| 11 | Lillian Billfield | 54 | Wife | — | Illinois |
| 12 | Mabel Ab. Billfield | 34 | Daughter | Private Nurse | Illinois |
| 13 | Robert A. Zimminack | 42 | Head | Steamboat Fireman | Illinois |
| 14 | Helen Zimminack | 42 | Wife | — | New York |
| 15 | Robert D. Zimminack | 12 | Son | — | Illinois |
| 16 | Richard A. Zimminack | 7 | Son | — | Illinois |
| 17 | William E. Zimminack | 5 | Son | — | Illinois |
| 18 | Fred Mathis | 43 | Head | Mail Carrier | Illinois |
| 19 | Margaret Mathis | 38 | Wife | Florist | Illinois |
| 20 | Robert Mathis | 9 | Brother | — | Illinois |
| 21 | Selma Bacchi | 64 | Mother-in-law | — | Germany |
| 22 | James Welch | 51 | Head | Policeman | Irish Free State |
| 23 | Jane Welch | 41 | Wife | — | Michigan |
| 24 | Edward Schroeder | 37 | Head | Tire Vulcanizer | Illinois |
| 25 | Leona Schroeder | 32 | Wife | Assembler | Illinois |
| 26 | June Schroeder | 14 | Daughter | — | Illinois |
| 27 | Joseph Miller | 61 | Head | Polishing Plater | Germany |
| 28 | Lorraine Miller | 19 | Daughter | New Worker | Illinois |
| 29 | Julius Kruger | 35 | Lodger | Plater | Illinois |
| 30 | Dorothy Kruger | 31 | Lodger-wife | — | Illinois |
| 31 | Julius Jr. Kruger | 11 | Lodger-son | — | Illinois |
| 32 | Ronald Kruger | 6 | Lodger-son | — | Illinois |
| 33 | Jeanette Kruger | 1 | Lodger-daughter | — | Illinois |
| 34 | John Link | 52 | Head | Carpenter | Germany |
| 35 | Catherine Link | 35 | Wife | — | Illinois |
| 36 | Margaret Link | 14 | Daughter | — | Illinois |
| 37 | John Link THIS PERSON | 13 | Son | — | Illinois |
| 38 | Harry Link | 9 | Son | — | Illinois |
| 39 | Paul Link | 6 | Son | — | Illinois |
| 40 | Virginia Link | 3 | Daughter | — | Illinois |
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)