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John Mcguire — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this John Mcguire across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed), with identified parents Rose & Phil — first a head (b.~1902), then head of a 5-person household.
Age 38
b. ~1902
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | McGuire |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Plumber |
| Industry | Own Account |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | Hs 2 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Plumber |
| Township / Ward | Chicago |
| Est. Birth Year | ~1902 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Virginia Mcguire | Daughter | — | 14 | ~1926 |
| John Mcguire | Head | — | 38 | ~1902 |
| Robert Mcguire | Son | — | 11 | ~1929 |
| John Mcguire | Son | — | 12 | ~1928 |
| Bernice Mcguire | Spouse | — | 34 | ~1906 |
Census Appearances
1920
Cook, Illinois
Son, age 17
Cook, Illinois · implied b. ~1903 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McGuire |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Son, age 29
Cook, Illinois · implied b. ~1901 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McGuire |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Laborer |
| Industry | Laundry |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Head, age 38
Cook-County, Illinois · implied b. ~1902 — 5 household members
| Surname | McGuire |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Occupation | Plumber |
| Industry | Own Account |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 0 |
| Highest Grade | Hs 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 Mcguire across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Rose Mcguire (~0.92 confidence) and father Phil Mcguire (~0.92 confidence) and mother Sarah Mcguire (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Rose Mcguire
b. ~1869
Source mother
● Household
· direct · ~0.92
Father
Phil Mcguire
b. ~1874
Source father
● Household
· direct · ~0.92
Mother
Sarah Mcguire
b. ~1875
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Mcguire
Head · 1940 · age 38 · b. ~1902 · 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-t0627-00958-00732)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Helen Peet | 40 | Sister in law | — | Illinois |
| 2 | Thomas J. Quinn | 42 | Head | Policeman | Ireland Free |
| 3 | Catherine Quinn | 37 | Wife | — | Ireland Free |
| 4 | Peter Quinn | 11 | Son | — | Illinois |
| 5 | Thomas Jr. Quinn | 10 | Son | — | Illinois |
| 6 | Leo Quinn | 7 | Son | — | Illinois |
| 7 | Mary Lou Quinn | 5 | Daughter | — | Illinois |
| 8 | William Quinn | 3 | Son | — | Illinois |
| 9 | Mary Duffy | 60 | Head | — | Ireland Free |
| 10 | Vincent Duffy | 27 | Son | Clerical | Illinois |
| 11 | Ambrose Duffy | 24 | Son | Machinist | Illinois |
| 12 | Marion Duffy | 22 | Daughter | Typist | Illinois |
| 13 | Anna Sjolin | 77 | Head | — | Sweden |
| 14 | Theodore Sjolin | 47 | Son | Proprietor | Illinois |
| 15 | Myrtle Sjolin | 45 | Daughter | Operator | Illinois |
| 16 | Edna Sjolin | 42 | Daughter | — | Illinois |
| 17 | Lambert Sjolin | 39 | Son | — | Illinois |
| 18 | John Mcguire THIS PERSON | 38 | Head | Plumber | Illinois |
| 19 | Bernice Mcguire | 34 | Wife | — | Kansas |
| 20 | Virginia Mcguire | 14 | Daughter | — | Illinois |
| 21 | John Jr. Mcguire | 12 | Son | — | Illinois |
| 22 | Robert Mcguire | 11 | Son | — | Illinois |
| 23 | Victor Carlson | 39 | Head | Stationary Engineer | Illinois |
| 24 | Margaret Carlson | 32 | Wife | — | New York |
| 25 | Barbara Carlson | 9 | Daughter | — | Illinois |
| 26 | Victor Jr. Carlson | 1 | Son | — | Illinois |
| 27 | Donald Pruitt | 42 | Head | Salesman | Illinois |
| 28 | Lucille Pruitt | 39 | Wife | — | Illinois |
| 29 | Constance Pruitt | 15 | Daughter | — | Illinois |
| 30 | Von Alan Pruitt | 13 | Son | — | Illinois |
| 31 | Matthew J. Frank | 29 | Head | Salesman | Illinois |
| 32 | Gladys Frank | 28 | Wife | Cashier | Illinois |
| 33 | Palmer W. Thelen | 30 | Head | Investigator | Illinois |
| 34 | Margaret Thelen | 26 | Wife | — | Illinois |
| 35 | Adele Thelen | 3 | Daughter | — | Illinois |
| 36 | James P. Holmes | 43 | Head | Clerical | Illinois |
| 37 | Olga Holmes | 40 | Wife | — | Illinois |
| 38 | Beverly Holmes | 19 | Daughter | Saleslady | Illinois |
| 39 | Kenneth Holmes | 15 | Son | — | Illinois |
| 40 | Helen Wicklund | 67 | Mother in law | — | Sweden |
Pedigree Summary
John
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
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)