JG
John Gilmore — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this John Gilmore across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1919), then head of a 7-person household.
Age 21
b. ~1919
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Gilmore |
| Given Name | John A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Messenger |
| Industry | Transportation |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 570 |
| Highest Grade | Hs 4 |
| 1935 Residence | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Messenger |
| Township / Ward | Elmwood Park |
| Est. Birth Year | ~1919 |
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 |
|---|---|---|---|---|
| Patrick Gilmore | Son | — | 26 | ~1914 |
| Catherine Gilmore | Spouse | — | 57 | ~1883 |
| Florence Gilmore | Daughter | — | 20 | ~1920 |
| John Gilmore | Son | — | 21 | ~1919 |
| Patrick Gilmore | Head | — | 53 | ~1887 |
| Mary Gilmore | Daughter | — | 27 | ~1913 |
| Martin Gilmore | Son | — | 18 | ~1922 |
Census Appearances
1930
Cook, Illinois
Son, age 10
Cook, Illinois · implied b. ~1920 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Gilmore |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 21
Cook-County, Illinois · implied b. ~1919 — 7 household members
| Surname | Gilmore |
| Given Name | John A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago |
| 1935 Residence (County) | Cook |
| Occupation | Messenger |
| Industry | Transportation |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 570 |
| Highest Grade | Hs 4 |
| 1935 Residence | Illinois |
| 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 Gilmore across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Gilmore
Son · 1940 · age 21 · b. ~1919 · Illinois
★ You are viewing this record
Sibling
Florence Gilmore
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patrick Gilmore
Sibling · 1940 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Martin Gilmore
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Gilmore
Sibling · 1940 · age 27
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-t0627-00780-00648)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John Dinseldorp | 53 | Head | Chauffeur | Holland |
| 2 | Lena S. Dinseldorp | 38 | Wife | — | Illinois |
| 3 | Harold G. Riefenberg | 20 | Step-son | Cabinet Maker | Illinois |
| 4 | Patrick J. Gilmore | 53 | Head | Night Watchman | Illinois |
| 5 | Catherine A. Gilmore | 57 | Wife | — | Irish Free State |
| 6 | Mary J. Gilmore | 27 | Daughter | Secretary | Illinois |
| 7 | Patrick J. Gilmore | 26 | Son | Collector | Illinois |
| 8 | John A. Gilmore THIS PERSON | 21 | Son | Messenger | Illinois |
| 9 | Florence A. Gilmore | 20 | Daughter | Sales Clerk | Illinois |
| 10 | Martin A. Gilmore | 18 | Son | Stock Boy | Illinois |
| 11 | Edward F. Maher | 55 | Head | Laborer | Illinois |
| 12 | Pearl M. Maher | 47 | Wife | — | Illinois |
| 13 | Daniel C. Maher | 23 | Son | Laborer | Illinois |
| 14 | Frank P. Maher | 21 | Son | Laborer | Illinois |
| 15 | Edwin W. Maher | 18 | Son | — | Illinois |
| 16 | Lorraine A. Maher | 16 | Daughter | — | Illinois |
| 17 | Robert C. Maher | 10 | Son | — | Illinois |
| 18 | Frank J. Popovits | 34 | Head | Mechanic | Austria |
| 19 | Anna Popovits | 37 | Wife | — | Austria |
| 20 | Frank J. Popovits | 14 | Son | — | Illinois |
| 21 | Joseph Dinta | 34 | Head | Bartender | Italy |
| 22 | Yolanda Dinta | 29 | Wife | Assembler | Illinois |
| 23 | Lawrence Dinta | 10 | Son | — | Illinois |
| 24 | Louis Marachia | 46 | Head | Bartender | Italy |
| 25 | Julia Marachia | 45 | Wife | — | Italy |
| 26 | Elisa Marachia | 9 | Daughter | — | Illinois |
| 27 | Erminio Banducci | 57 | Head | Laborer | Italy |
| 28 | Dina Banducci | 50 | Wife | — | Italy |
| 29 | Edward Banducci | 14 | Son | — | Illinois |
| 30 | Hans Damm | 30 | Head | Painter | Germany |
| 31 | Lillian Damm | 23 | Wife | — | Illinois |
| 32 | John Pecararo | 24 | Brother-in-law | Laborer | Italy |
| 33 | Susie Pecararo | 24 | Sister-in-law | — | Illinois |
| 34 | Nick Guber | 40 | Head | Motorman | Illinois |
| 35 | Hannah Guber | 47 | Wife | — | Germany |
| 36 | Gustave V. Bass | 58 | Head | Machinist | Sweden |
| 37 | Hulda A. Bass | 56 | Wife | — | Sweden |
| 38 | Alice M. Bass | 33 | Daughter | Puppet | Illinois |
| 39 | Eleanor M. Bass | 27 | Daughter | File Clerk | Illinois |
| 40 | Ethel C. Bass | 17 | Daughter | Stenographer | Illinois |
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)