TP
Thomas Porter — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Cook-County, Illinois
Our Model Tree links this Thomas Porter across the 1930 and 1940 US Censuses in Cook-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1927), then head of a 7-person household.
Age 13
b. ~1927
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cook-County, Illinois |
| Surname | Porter |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Additional Details | |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Chicago City |
| Est. Birth Year | ~1927 |
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 Thomas | Age | Birth yr |
|---|---|---|---|---|
| Daniel Porter | Son | — | 17 | ~1923 |
| James Porter | Head | — | 47 | ~1893 |
| Josephine Porter | Spouse | — | 45 | ~1895 |
| Loretta Porter | Daughter | — | 2 | ~1938 |
| Raymond Porter | Son | — | 15 | ~1925 |
| James Porter | Son | — | 22 | ~1918 |
| Thomas Porter | Son | — | 13 | ~1927 |
Census Appearances
1930
Cook, Illinois
Son, age 4
Cook, Illinois · implied b. ~1926 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Porter |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Veteran | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Cook-County, Illinois
Son, age 13
Cook-County, Illinois · implied b. ~1927 — 7 household members
| Surname | Porter |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Chicago City |
| 1935 Residence (County) | Cook |
| Highest Grade | No 5 |
| 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 Thomas Porter across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Thomas Porter
Son · 1940 · age 13 · b. ~1927 · Illinois
★ You are viewing this record
Sibling
James Porter
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Raymond Porter
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Loretta Porter
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Daniel Porter
Sibling · 1940 · age 17
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-t0627-00954-00399)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | George Sabbtoy | 32 | Lodger | Salesman | Illinois |
| 2 | Delores Sabbtoy | 25 | Wife | — | Illinois |
| 3 | William Robinson | 39 | Head | Machinist | Illinois |
| 4 | Marie Robinson | 37 | Wife | — | Illinois |
| 5 | Hazel Robinson | 14 | Daughter | — | Illinois |
| 6 | Theodore Robinson | 9 | Son | — | Illinois |
| 7 | Henry Topel | 35 | Brother-in-law | Painter | Illinois |
| 8 | Charles Topel | 30 | Brother-in-law | Painter | Illinois |
| 9 | Frank Shelley | 24 | Nephew | Paper Handler | Illinois |
| 10 | Celeste Shelley | 24 | Niece | — | Illinois |
| 11 | John Shelley | 4 | Grandnephew | — | Illinois |
| 12 | Eileen Shelley | 2 | Grandniece | — | Illinois |
| 13 | Celeste Shelley | 0 | Grandniece | — | Illinois |
| 14 | James Porter | 47 | Head | Cattle Counter | Illinois |
| 15 | Josephine Porter | 45 | Wife | — | Illinois |
| 16 | James Jr. Porter | 22 | Son | Truck Helper | Illinois |
| 17 | Daniel Porter | 17 | Son | Truck Helper | Illinois |
| 18 | Raymond Porter | 15 | Son | — | Illinois |
| 19 | Thomas Porter THIS PERSON | 13 | Son | — | Illinois |
| 20 | Loretta Porter | 2 | Daughter | — | Illinois |
| 21 | Mary Bahn | 36 | Head | — | Illinois |
| 22 | Dorothy Bahn | 17 | Daughter | — | Illinois |
| 23 | Harry Bahn | 15 | Son | — | Illinois |
| 24 | Juanita Bahn | 14 | Daughter | — | Illinois |
| 25 | Malcolm Bahn | 12 | Son | — | Illinois |
| 26 | May Bahn | 11 | Daughter | — | Illinois |
| 27 | Barbara Bahn | 7 | Daughter | — | Illinois |
| 28 | Michael Cunningham | 55 | Head | Laborer | Ireland |
| 29 | Mary Cunningham | 54 | Wife | — | Ireland |
| 30 | Mary Cunningham | 19 | Daughter | Asst Chemist | Illinois |
| 31 | Irene Cunningham | 18 | Daughter | — | Illinois |
| 32 | Anna Cunningham | 15 | Daughter | — | Illinois |
| 33 | Edward Fairclough | 42 | Head | Truck Driver | Illinois |
| 34 | Sarah Fairclough | 42 | Wife | — | Illinois |
| 35 | Edward Fairclough | 21 | Son | Bell Boy | Illinois |
| 36 | Robert Fairclough | 17 | Son | Shipping Clerk | Illinois |
| 37 | Richard Fairclough | 15 | Son | — | Illinois |
| 38 | William Mainsworth | 40 | Head | Engraver | England |
| 39 | Margaret Mainsworth | 41 | Wife | — | Minnesota |
| 40 | Helen Mainsworth | 19 | Daughter | New Worker | 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)