HT
Harry Thompson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Harry Thompson across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1892), then head of a 6-person household.
Age 48
b. ~1892
Male
Head
Born: Norway
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Thompson |
| Given Name | Harry |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Norway |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Naturalization Status | First papers filed |
| Additional Details | |
| Occupation | Captain |
| Industry | Steam ship |
| Class of Worker | PW |
| Hours Worked | 35 |
| Income (1939) | 1800 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | Norway |
| Birthplace (normalized) | norway |
| Occupation | Captain |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1892 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Harry | Age | Birth yr |
|---|---|---|---|---|
| Helen Thompson | Daughter | — | 12 | ~1928 |
| Elsie Thompson | Daughter | — | 20 | ~1920 |
| Harry Thompson | Head | — | 48 | ~1892 |
| Harry Thompson | Son | — | 5 | ~1935 |
| Ralph Thompson | Son | — | 18 | ~1922 |
| Martha Thompson | Spouse | — | 42 | ~1898 |
Census Appearances
1920
Cook, Illinois
Head, age 27
Cook, Illinois · implied b. ~1893 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Harry |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Norway |
| Year of Immigration | 1880 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Occupation | Machine operator |
| Industry | Track factory |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Norwegian |
| Home Owned/Rented | R |
| Birth Country | Norway |
| Year of Naturalization | 1887 |
| Birthplace (normalized) | norway |
1930
Cook, Illinois
Head, age 37
Cook, Illinois · implied b. ~1893 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Harry |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Married |
| Birthplace | Norway |
| Naturalization Status | First papers filed |
| Year of Immigration | 1922 |
| Age at First Marriage | 25 |
| Father's Birthplace | Norway |
| Mother's Birthplace | Norway |
| Occupation | Sailor Yacht |
| Industry | Yachts |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Norwegian |
| Home Owned/Rented | R |
| Home Value / Rent | 40.00 |
| Radio Set | R |
| Veteran | No |
| Birth Country | Norway |
| Birthplace (normalized) | norway |
1940
Cook-County, Illinois
Head, age 48
Cook-County, Illinois · implied b. ~1892 — 6 household members
| Surname | Thompson |
| Given Name | Harry |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Norway |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Naturalization Status | First papers filed |
| Occupation | Captain |
| Industry | Steam ship |
| Class of Worker | PW |
| Hours Worked | 35 |
| Income (1939) | 1800 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth Country | Norway |
| Birthplace (normalized) | norway |
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 Thompson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Harry Thompson
Head · 1940 · age 48 · b. ~1892 · 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-t0627-00991-00007)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John Thayer | 36 | Head | Engineer | Arkansas |
| 2 | Viola Thayer | 32 | Wife | — | Illinois |
| 3 | Mona M. Thayer | 7 | Daughter | — | Illinois |
| 4 | Herbert E. Gunther | 29 | Head | Milkman | Illinois |
| 5 | Myrtle C. Gunther | 27 | Wife | — | Illinois |
| 6 | William C. Gunther | 1 | Son | — | Illinois |
| 7 | Charles H. Mcclure | 27 | Head | Mail Clerk | Iowa |
| 8 | Jessie M. Mcclure | 26 | Wife | — | Wisconsin |
| 9 | Charles W. Mcclure | 2 | Son | — | Wisconsin |
| 10 | Harry Thompson THIS PERSON | 48 | Head | Captain | Norway |
| 11 | Martha C. Thompson | 42 | Wife | — | Norway |
| 12 | Elsie M. Thompson | 20 | Daughter | Clerk | Norway |
| 13 | Ralph E. Thompson | 18 | Son | Apprentice | Norway |
| 14 | Helen F. Thompson | 12 | Daughter | — | Illinois |
| 15 | Harry M. Thompson | 5 | Son | — | Illinois |
| 16 | Lyall S. Norris | 37 | Head | Sheet Metal Worker | Illinois |
| 17 | Marie C. Norris | 31 | Wife | — | Illinois |
| 18 | Ann M. Norris | 5 | Daughter | — | Illinois |
| 19 | Peter Lukasewski | 69 | Head | — | Poland |
| 20 | Mary A. Lukasewski | 59 | Wife | — | Poland |
| 21 | Stanley J. Lukasewski | 34 | Son | Sole Cutter | Illinois |
| 22 | Casimir E. Leinowski | 33 | Head | Mechanic | Illinois |
| 23 | Elizabeth P. Leinowski | 27 | Wife | Clerk | Illinois |
| 24 | Theodore Mleczko | 53 | Head | Moulder | Poland |
| 25 | Clementine Mleczko | 49 | Wife | — | Poland |
| 26 | Anna Mleczko | 23 | Daughter | Assembler | Illinois |
| 27 | Bernice Mleczko | 20 | Daughter | Seamstress | Illinois |
| 28 | Steven Mleczko | 26 | Son | Rounder | Illinois |
| 29 | Geraldine Mleczko | 3 | Granddau | — | Illinois |
| 30 | Anthony Marchowka | 34 | Head | Roller | Wisconsin |
| 31 | Estelle Marchowka | 28 | Wife | Floor Girl | Illinois |
| 32 | Robert Marchowka | 8 | Son | — | Illinois |
| 33 | Ottilia Funk | 75 | Head | — | Germany |
| 34 | George Funk | 40 | Son | Glass Blower | Illinois |
| 35 | Emily Funk | 38 | Daughter | — | Illinois |
| 36 | Louis Funk | 16 | Grandson | — | Illinois |
| 37 | Earl A. Keith | 43 | Head | Shoe Cutter | Missouri |
| 38 | Mabel B. Keith | 34 | Wife | Match Marker | Missouri |
| 39 | Homer W. Keith | 19 | Son | Elevator Operator | Missouri |
| 40 | Robert A. Keith | 18 | Son | Deliverer | Missouri |
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)