TP
Thomas Porter — 1940 US Census Record
Model Tree available1940 United States Federal Census · St.-Clair-County, Illinois
Our Model Tree links this Thomas Porter across the 1920, 1930 and 1940 US Censuses in St.-Clair-County, Illinois (XGBoost, ~Confirmed), with identified parents Thomas & Thornton — first a son (b.~1921), then head of a 3-person household.
Age 19
b. ~1921
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | St.-Clair-County, Illinois |
| Surname | Porter |
| Given Name | Thomas Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | E. St. Louis |
| 1935 Residence (County) | St. Clair |
| Additional Details | |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | E St Louis |
| Est. Birth Year | ~1921 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Thomas | Age | Birth yr |
|---|---|---|---|---|
| Thomas Porter | Son | — | 19 | ~1921 |
| Mattie Porter | Spouse | — | 39 | ~1901 |
| Thomas Porter | Head | — | 39 | ~1901 |
Census Appearances
1920
St Clair, …
Son, age 3
St Clair, Illinois · implied b. ~1917 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Porter |
| Given Name | Thomas |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Mississippi |
| Mother's Birthplace | Mississippi |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
St Clair, …
Son, age 12
St Clair, Illinois · implied b. ~1918 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Porter |
| Given Name | Thomas Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Mississippi |
| Mother's Birthplace | Mississippi |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
St.-Clair-County, Illinois
Son, age 19
St.-Clair-County, Illinois · implied b. ~1921 — 3 household members
| Surname | Porter |
| Given Name | Thomas Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | E. St. Louis |
| 1935 Residence (County) | St. Clair |
| Highest Grade | Hs 4 |
| 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 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Thomas Porter (~0.92 confidence) and father Thornton Porter (~0.92 confidence) and mother Mattie Porter (~0.92 confidence) and mother Mattie Porter (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Thomas Porter
b. ~1896
Source father
● Household
· direct · ~0.92
Father
Thornton Porter
b. ~1891
Source father
● Household
· direct · ~0.92
Mother
Mattie Porter
b. ~1901
Source mother
● Household
· direct · ~0.92
Mother
Mattie Porter
b. ~1897
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Thomas Porter
Son · 1940 · age 19 · b. ~1921 · 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 — St.-Clair-County, Illinois
Open full size
1940 US Federal Census — St.-Clair-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00881-00015)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | James D. Johnson | 19 | Lodger | Clerk | Mississippi |
| 42 | Hattie Johnson | 17 | Lodger | — | Mississippi |
| 43 | Hilda Johnson | 14 | Lodger | — | Illinois |
| 44 | James Patterson | 32 | Head | Laborer | Mississippi |
| 45 | Brownie Patterson | 25 | Wife | — | Mississippi |
| 46 | Jimmie Mack | 37 | Head | — | Alabama |
| 47 | Lucy Mack | 35 | Wife | — | Alabama |
| 48 | Gordon Adams | 39 | Head | Cartman | Louisiana |
| 49 | Mary Adams | 38 | Wife | — | Arkansas |
| 50 | Eulalia Adams | 10 | Daughter | — | Illinois |
| 51 | Thomas Porter | 39 | Head | Boiler Washer | Mississippi |
| 52 | Mattie Porter | 39 | Wife | — | Mississippi |
| 53 | Thomas Jr. Porter THIS PERSON | 19 | Son | — | Illinois |
| 54 | George Trent | 37 | Head | Butcher | Mississippi |
| 55 | Charles Trent | 15 | Son | — | Illinois |
| 56 | Henry Williams | 22 | Head | Laborer | Mississippi |
| 57 | Jennie Williams | 21 | Wife | — | Louisiana |
| 58 | Sylvester Williams | 3 | Son | — | Illinois |
| 59 | Ruth Williams | 2 | Daughter | — | Missouri |
| 60 | Betty Lou Williams | 1 | Daughter | — | Illinois |
| 61 | Vacant House | None | — | — | — |
| 62 | Robert Gibson | 32 | Head | Laborer | Mississippi |
| 63 | Victoria Gibson | 29 | Wife | Office Girl | Illinois |
| 64 | James Jordan | 33 | Head | Laborer | Mississippi |
| 65 | Maggie Jordan | 25 | Sister | — | Mississippi |
| 66 | Willie Applewhite | 30 | Lodger | Laborer | Mississippi |
| 67 | Here Ends Block 89 And Begins Block 90 | None | — | — | — |
| 68 | Dora Green | 50 | Head | Laundress | Texas |
| 69 | Nelius Mitchell | 45 | Lodger | Laborer | Arkansas |
| 70 | Virginia Mitchell | 41 | Lodger | — | Arkansas |
| 71 | Florence Martin | 42 | Head | Seamstress | Mississippi |
| 72 | Edward Hicks | 53 | Head | Sewer Cleaner | Mississippi |
| 73 | Rosa Hicks | 38 | Wife | — | Tennessee |
| 74 | Edward Holmes | 21 | Son | Laborer | Tennessee |
| 75 | Peter Casey Holmes | 3 | Grandson | — | Illinois |
| 76 | Mary Bell Wallace | 23 | Head | Seamstress | Arkansas |
| 77 | Dorothy Wallace | 9 | Daughter | — | Arkansas |
| 78 | Loyd Clark | 67 | Father | — | Missouri |
| 79 | Thelma Anderson | 29 | Head | — | Mississippi |
| 80 | Thomas Anderson | 11 | Son | — | Arkansas |
Pedigree Summary
Thomas
Gen 1 · 4 parents
~0.92
Max depth 4 (1900–1950 window)
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)