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Harry Kelly — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Harry Kelly across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1898), then head of a 8-person household.
Age 42
b. ~1898
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Kelly |
| Given Name | Harry |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Occupation | Telegrapher |
| Industry | Steam Railroad |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 2200 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Telegrapher |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1898 |
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 1940 census.
| Name | Relation to head | Relative to Harry | Age | Birth yr |
|---|---|---|---|---|
| Mary Kelly | Daughter | — | 19 | ~1921 |
| Jane Kelly | Daughter | — | 12 | ~1928 |
| Margaret Kelly | Daughter | — | 15 | ~1925 |
| Matthew Kelly | Son | — | 7 | ~1933 |
| Henry Kelly | Son | — | 14 | ~1926 |
| Josephine Kelly | Spouse | — | 41 | ~1899 |
| Louise Kelly | Daughter | — | 17 | ~1923 |
| Harry Kelly | Head | — | 42 | ~1898 |
Census Appearances
1930
Cook, Illinois
Spouse, age 33
Cook, Illinois · implied b. ~1897 — 50 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kelly |
| Given Name | Harry |
| Relationship to Head | Husband |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 30 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Salesman |
| Industry | Second hand store |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 50 |
| Radio Set | R |
| Veteran | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Head, age 42
Cook-County, Illinois · implied b. ~1898 — 8 household members
| Surname | Kelly |
| Given Name | Harry |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Occupation | Telegrapher |
| Industry | Steam Railroad |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 2200 |
| Highest Grade | No 8 |
| 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 Harry Kelly across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Harry Kelly
Head · 1940 · age 42 · b. ~1898 · Illinois
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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-t0627-00989-00841)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | William Thomsen | 41 | Wife | — | Illinois |
| 2 | Jean Thomsen | 15 | Daughter | — | Illinois |
| 3 | Harry Kelly THIS PERSON | 42 | Head | Telegrapher | Illinois |
| 4 | Josephine Kelly | 41 | Wife | — | Illinois |
| 5 | Mary Kelly | 19 | Daughter | Telephone Operator | Illinois |
| 6 | Louise Kelly | 17 | Daughter | Non Worker | Illinois |
| 7 | Margaret Kelly | 15 | Daughter | — | Illinois |
| 8 | Henry Kelly | 14 | Son | — | Illinois |
| 9 | Jane Kelly | 12 | Daughter | — | Illinois |
| 10 | Matthew Kelly | 7 | Son | — | Illinois |
| 11 | Oscar Brown | 52 | Head | Arc Welding | Illinois |
| 12 | Linne Brown | 49 | Wife | — | Arkansas |
| 13 | Theodore Kowal | 20 | Son-in-law | Stock Chaser | Illinois |
| 14 | Margaret Kowal | 18 | Daughter | — | Illinois |
| 15 | Elvina Monson | 41 | Head | Housework | Germany |
| 16 | Herman Appelt | 21 | Son | Filing Clerk | Michigan |
| 17 | Lydia Appelt | 13 | Daughter | Non Worker | Michigan |
| 18 | Ruth Webber | 20 | Daughter | Machine Worker | Michigan |
| 19 | Darlene Webber | 3 | Granddaughter | — | Illinois |
| 20 | George Karvin | 40 | Head | Truck Driver | Illinois |
| 21 | Ray Simmons | 37 | Boarder | Truck Driver | Missouri |
| 22 | Roy Mondok | 25 | Head | Press Man | Illinois |
| 23 | Marie Mondok | 24 | Wife | — | Pennsylvania |
| 24 | Julia Blaschak | 25 | Sister-in-law | Special Machinist | Pennsylvania |
| 25 | — | None | — | — | — |
| 26 | Robert H. Karken | 43 | Head | Packer | Indiana |
| 27 | Leoda Karken | 45 | Wife | — | Indiana |
| 28 | Robert Schmidt | 52 | Head | Millwright | Illinois |
| 29 | Regina Schmidt | 57 | Sister | — | Illinois |
| 30 | Adam Hoffman | 36 | Head | Draftsman | Illinois |
| 31 | Dorothy Hoffman | 36 | Wife | — | Illinois |
| 32 | Richard Hoffman | 12 | Son | — | Illinois |
| 33 | Jacquelyn Hoffman | 10 | Daughter | — | Illinois |
| 34 | Marie Johnson | 66 | Head | — | New York |
| 35 | Max Knasak | 53 | Lodger | Laborer | Germany |
| 36 | Norman Nelson | 45 | Head | House Painter | Illinois |
| 37 | Jewel Nelson | 43 | Wife | Wrapper | Mississippi |
| 38 | Norman Nelson | 13 | Son | — | Illinois |
| 39 | Joseph Jeffers | 43 | Head | Fireman | Illinois |
| 40 | Mabel Jeffers | 30 | Wife | — | 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)