JC
John Coughlin — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Cook, Illinois
Our Model Tree links this John Coughlin across the 1930 and 1940 US Censuses in Cook, Illinois (XGBoost, ~Confirmed) — first a son (b.~1926), then head of a 8-person household.
Age 4
b. ~1926
Male
Son
Born: Illinois
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Cook, Illinois |
| Surname | Coughlin |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Additional Details | |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | City Of Chicago |
| Est. Birth Year | ~1926 |
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 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Louise Coughlin | Daughter | — | 2 | ~1928 |
| Josephine Duess | Other | — | 67 | ~1863 |
| Edwina Coughlin | Spouse | — | 35 | ~1895 |
| Jean Coughlin | Daughter | — | 7 | ~1923 |
| John Coughlin | Son | — | 4 | ~1926 |
| John Coughlin | Head | — | 40 | ~1890 |
| Marjorie Coughlin | Daughter | — | 1 | ~1929 |
| Madeline Gunter | Other | — | 19 | ~1911 |
Census Appearances
1930
Cook, Illinois
Son, age 4
Cook, Illinois · implied b. ~1926 — 8 household members
| Surname | Coughlin |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 13
Cook-County, Illinois · implied b. ~1927 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Koughlan |
| 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 | H 1 |
| 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 Coughlin across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Coughlin
Son · 1930 · age 4 · b. ~1926 · Illinois
★ You are viewing this record
Sibling
Jean Coughlin
Sibling · 1930 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Louise Coughlin
Sibling · 1930 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marjorie Coughlin
Sibling · 1930 · age 1
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:illinoiscensus00reel477:0530)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John Dr. Coughlin | 40 | Head | Physician | Illinois |
| 2 | Edwina Coughlin | 35 | Wife | — | Illinois |
| 3 | Jean Coughlin | 7 | Daughter | — | Illinois |
| 4 | John Coughlin THIS PERSON | 4 | Son | — | Illinois |
| 5 | Louise Coughlin | 2 | Daughter | — | Illinois |
| 6 | Marjorie Coughlin | 1 | Daughter | — | Illinois |
| 7 | Josephine Duess | 67 | Mother-in-law | — | France |
| 8 | Madeline Gunter | 19 | Servant | Servant | Germany |
| 9 | John Costello | 53 | Head | Supt. Water Dept. | Illinois |
| 10 | Esther Costello | 45 | Wife | — | New York |
| 11 | Raymond Costello | 13 | Son | — | Illinois |
| 12 | Milton Costello | 11 | Son | — | Illinois |
| 13 | Mathew Petrar | 61 | Head | Proprietor | Czech-Slovakia |
| 14 | Anna Petrar | 57 | Wife | — | Czech-Slovakia |
| 15 | Timothy Callahan | 49 | Head | Electrical Engineer | Vermont |
| 16 | Catherine Callahan | 45 | Wife | — | Illinois |
| 17 | Eugene Callahan | 19 | Son | — | Illinois |
| 18 | Mathias Koch | 59 | Head | Proprietor | Germany |
| 19 | Florence Suggs | 44 | Step-Daughter | — | Illinois |
| 20 | Eugenia Suggs | 40 | Step-Daughter | — | Illinois |
| 21 | Herman Koch | 30 | Son | Proprietor | Illinois |
| 22 | Julia Koch | 25 | Daughter-in-law | — | Illinois |
| 23 | Mary Koch | 2 | Grand-child | — | Illinois |
| 24 | Robert Koch | 1 | Grand-child | — | Illinois |
| 25 | Adolph Rillieux | 43 | Head | Compositor | Louisiana |
| 26 | Estelle Rillieux | 39 | Wife | — | Louisiana |
| 27 | Adolph Jr. Rillieux | 17 | Son | — | Louisiana |
| 28 | Marcella Rillieux | 16 | Daughter | — | Louisiana |
| 29 | George Kubela | 39 | Roomer | Clerk | Illinois |
| 30 | Charles Stagard | 50 | Head | Assistant Collector Of Customs | Illinois |
| 31 | Mattie Stagard | 48 | Wife | — | Illinois |
| 32 | George Stagard | 20 | Son | Clerk | Illinois |
| 33 | Ralph Stagard | 17 | Son | Clerk | Illinois |
| 34 | John Mcintee | 57 | Head | Office Manager | Michigan |
| 35 | Elizabeth Mcintee | 44 | Wife | — | Ohio |
| 36 | John Mcintee | 11 | Son | — | Illinois |
| 37 | William Mcintee | 7 | Son | — | Illinois |
| 38 | Donald Sphey | 24 | Roomer | Clerk | Ohio |
| 39 | Paul Fager | 21 | Roomer | Bookkeeper | Ohio |
| 40 | Carl Arthur Schmidt | 46 | Head | Auto Mechanic | Illinois |
| 41 | Amelia Schmidt | 44 | Wife | — | Illinois |
| 42 | Oswald Herman Schmidt | 26 | Boarder | Chauffeur | Germany |
| 43 | John Schroeder | 42 | Head | Heating Contractor | Germany |
| 44 | Edna Schroeder | 35 | Wife | — | Illinois |
| 45 | Henry Damm | 29 | Brother-in-law | Commercial Artist | Illinois |
| 46 | Henry Jr. Damm | 18 | Nephew | — | Illinois |
| 47 | Augusta Miller | 45 | Sister | — | Germany |
| 48 | Ruby Latan | 24 | Head | Proprietor | Minnesota |
| 49 | Robert Latan | 16 | Son | — | Illinois |
| 50 | Elmer Latan | 15 | Son | — | Illinois |
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)