MC
Mary Coughlin — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Mary Coughlin across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a spouse (b.~1889), then head of a 5-person household.
Age 51
b. ~1889
Female
Spouse
Born: Ireland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Coughlin |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
| Township / Ward | Chicago |
| Est. Birth Year | ~1889 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Coughlin | Spouse | — | 51 | ~1889 |
| Tom Coughlin | Son | — | 21 | ~1919 |
| Thomas Coughlin | Other | — | 39 | ~1901 |
| John Coughlin | Son | — | 23 | ~1917 |
| Michael Coughlin | Head | — | 53 | ~1887 |
Census Appearances
1920
Cook, Illinois
Spouse, age 30
Cook, Illinois · implied b. ~1890 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Coughlin |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Ireland |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1930
Cook, Illinois
Spouse, age 36
Cook, Illinois · implied b. ~1894 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Coughlin |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Ireland |
| Age at First Marriage | 26 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read/Write | Yes |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
1940
Cook-County, Illinois
Spouse, age 51
Cook-County, Illinois · implied b. ~1889 — 5 household members
| Surname | Coughlin |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Ireland |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Naturalization Status | Naturalized |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | Ireland |
| Birthplace (normalized) | ireland |
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 Mary Coughlin across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Coughlin
Spouse · 1940 · age 51 · b. ~1889 · Illinois
★ You are viewing this record
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-t0627-00945-00738)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Pearl Cooper | 49 | Head | Candler | Pennsylvania |
| 42 | John Kledunter|Kledunten | 38 | Brother | Laborer | Michigan |
| 43 | Frank Fortier | 31 | Head | Decorator | Illinois |
| 44 | Margaret Fortier | 29 | Wife | — | Illinois |
| 45 | Joseph Pavletic | 31 | Head | Collector | Illinois |
| 46 | Laurina Pavletic | 22 | Sister | — | Illinois |
| 47 | Diana Fortier | 54 | Mother | — | French Canadian |
| 48 | Adam Zombek | 47 | Head | Presser | Poland |
| 49 | Mary Zombek | 44 | Wife | Assorter | Poland |
| 50 | Stanley Zombek | 20 | Son | New Worker | Illinois |
| 51 | Helen Zombek | 19 | Daughter | Filler | Illinois |
| 52 | Jessie Zombek | 17 | Daughter | — | Illinois |
| 53 | Joseph Prokop | 30 | Head | Laborer | Illinois |
| 54 | Helen Prokop | 27 | Wife | Assorter | Illinois |
| 55 | Katherine Josefowicz|Joseforvicz | 48 | Mother in law | Cook | Poland |
| 56 | Mary Rachwal | 25 | Cousin | Extruder | Poland |
| 57 | Joseph Zgobis | 53 | Head | Painter | Poland |
| 58 | Victoria Zgobis | 47 | Wife | — | Poland |
| 59 | Frank Zgobis | 25 | Son | Plating Machine | Illinois |
| 60 | Casimir Zgobis | 23 | Son | Apprentice | Illinois |
| 61 | Thomas Kobelinski | 35 | Head | Engineer | Illinois |
| 62 | Lottie Kobelinski | 33 | Wife | — | Poland |
| 63 | Henry Kobelinski | 11 | Son | — | Michigan |
| 64 | William Raymond | 62 | Head | Carpenter | Illinois |
| 65 | Alba Raymond | 52 | Wife | — | French Canadian |
| 66 | Alice Raymond | 18 | Daughter | New Worker | Illinois |
| 67 | Victor Otros | 27 | Head | Printer | Illinois |
| 68 | Eva Otros | 25 | Wife | Stenographer | New York |
| 69 | Michael Coughlin | 53 | Head | Conductor | Ireland |
| 70 | Mary Coughlin THIS PERSON | 51 | Wife | — | Ireland |
| 71 | John Coughlin | 23 | Son | Laborer | Illinois |
| 72 | Tom Coughlin | 21 | Son | — | Illinois |
| 73 | Thomas Coughlin | 39 | Brother | Laborer | Ireland |
| 74 | Theodore Saumann | 50 | Head | Rate Clerk | Illinois |
| 75 | Elsie Saumann | 46 | Wife | — | Illinois |
| 76 | Andrew Berunas | 52 | Head | Laborer | Lithuania |
| 77 | Eva Berunas | 48 | Wife | — | Lithuania |
| 78 | Bernice Mekunas | 22 | Stepdaughter | Clerical | Illinois |
| 79 | Albert Jacklski|Jackelski | 55 | Head | Puncher Press | Poland |
| 80 | Anna Jacklski|Jackelski | 46 | Wife | — | Poland |
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)