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Alfred Thomas — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Alfred Thomas across the 1920, 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1874), then head of a 5-person household.
Age 66
b. ~1874
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Thomas |
| Given Name | Alfred H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 66 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Industry | 320 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1874 |
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 Alfred | Age | Birth yr |
|---|---|---|---|---|
| Katherine Thomas | Other | — | 24 | ~1916 |
| Virginia Thomas | Spouse | — | 66 | ~1874 |
| Alfred Thomas | Son | — | 24 | ~1916 |
| Alfred Thomas | Other | — | 1 | ~1939 |
| Alfred Thomas | Head | — | 66 | ~1874 |
Census Appearances
1920
Cook, Illinois
Head, age 45
Cook, Illinois · implied b. ~1875 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Alfred H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Illinois |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Order filler |
| Industry | Wholesale Dry Goods |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | German |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Cook, Illinois
Head, age 56
Cook, Illinois · implied b. ~1874 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Alfred |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 56 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 29 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 2000 |
| Radio Set | R |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Head, age 66
Cook-County, Illinois · implied b. ~1874 — 5 household members
| Surname | Thomas |
| Given Name | Alfred H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 66 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Industry | 320 |
| Highest Grade | 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 Alfred Thomas across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Alfred Thomas
Head · 1940 · age 66 · b. ~1874 · 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-t0627-00987-00734)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Son James | None | M | Machine Shop | — |
| 42 | Annabelle James | 16 | Daughter | — | Illinois |
| 43 | Labelle James | 12 | Daughter | — | Illinois |
| 44 | Katherine James | 11 | Daughter | — | Illinois |
| 45 | Peter Kiziorek | 36 | Head | Shipping Clerk | Illinois |
| 46 | Celia Kiziorek | 28 | Wife | — | Illinois |
| 47 | Yvonne Kiziorek | 9 | Daughter | — | Illinois |
| 48 | John Keeley | 27 | Head | Pressman | Minnesota |
| 49 | Florence Keeley | 23 | Wife | — | Illinois |
| 50 | Kenneth Keeley | 0 | Son | — | Illinois |
| 51 | Alfred H. Thomas THIS PERSON | 66 | Head | — | Illinois |
| 52 | Virginia Thomas | 66 | Wife | — | New York |
| 53 | Alfred S. Thomas | 24 | Son | Master Mechanic | Illinois |
| 54 | Katherine Thomas | 24 | Daughter-in-law | — | Tennessee |
| 55 | Alfred Henry Thomas | 1 | Grandson | — | Illinois |
| 56 | Harold Klank | 34 | Head | Electroplater | Illinois |
| 57 | Doris Klank | 31 | Wife | Press Operator | Michigan |
| 58 | Donald Klank | 11 | Son | — | Illinois |
| 59 | Henry Hartjen | 38 | Head | Monument Setter | Illinois |
| 60 | Pearl Hartjen | 32 | Wife | — | Illinois |
| 61 | Henry Jr. Hartjen | 13 | Son | — | Illinois |
| 62 | John Hartjen | 12 | Son | — | Illinois |
| 63 | Paul Hartjen | 10 | Son | — | Illinois |
| 64 | Pearl Hartjen | 10 | Daughter | — | Illinois |
| 65 | Frank Papiese | 39 | Head | Punch Press | Illinois |
| 66 | Florence Papiese | 34 | Wife | — | Russia |
| 67 | Harold Papiese | 12 | Son | — | Illinois |
| 68 | Doris Papiese | 10 | Daughter | — | Illinois |
| 69 | Walter Papiese | 8 | Son | — | Illinois |
| 70 | Delano R. Papiese | 7 | Son | — | Illinois |
| 71 | Wanda Papiese | 5 | Daughter | — | Illinois |
| 72 | Priscilla Papiese | 3 | Daughter | — | Illinois |
| 73 | Carl Papiese | 1 | Son | — | Illinois |
| 74 | Fred Bergendahl | 24 | Head | Room Trimmer | Illinois |
| 75 | Angeline Bergendahl | 27 | Wife | — | Illinois |
| 76 | Bruce Bergendahl | 1 | Son | — | Illinois |
| 77 | Peter Nielsen | 38 | Brother-in-law | Steward | Denmark |
| 78 | Louis Olsen | 70 | Head | — | Norway |
| 79 | Emma Olsen | 61 | Wife | — | Norway |
| 80 | Gary Vanderlugt | 27 | Roomer | Baker Helper | Iowa |
Related Census Records
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)