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Thomas Harris — 1940 US Census Record
Model Tree available1940 United States Federal Census · Madison-County, Illinois
Our Model Tree links this Thomas Harris across the 1920, 1930 and 1940 US Censuses in Madison-County, Illinois (XGBoost, ~Confirmed), with identified parents Wm & Hugh — first a son (b.~1915), then head of a 5-person household.
Age 25
b. ~1915
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Madison-County, Illinois |
| Surname | Harris |
| Given Name | Thomas D. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Alton City |
| 1935 Residence (County) | Madison |
| Additional Details | |
| Occupation | Clerk |
| Industry | Insurance |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 266 |
| Highest Grade | C 2 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Clerk |
| Township / Ward | Alton City |
| Est. Birth Year | ~1915 |
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 Thomas | Age | Birth yr |
|---|---|---|---|---|
| Ethel Harris | Head | — | 65 | ~1875 |
| Thomas Harris | Son | — | 25 | ~1915 |
| Joseph Harris | Son | — | 27 | ~1913 |
| John Harris | Son | — | 22 | ~1918 |
| Ethel Harris | Spouse | — | 59 | ~1881 |
Census Appearances
1920
Madison, Illinois
Son, age 5
Madison, Illinois · implied b. ~1915 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harris |
| Given Name | Thomas D |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Ohio |
| Mother's Birthplace | North Carolina |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Madison, Illinois
Son, age 15
Madison, Illinois · implied b. ~1915 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Harris |
| Given Name | Thomas L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Ohio |
| Mother's Birthplace | North Carolina |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Madison-County, Illinois
Son, age 25
Madison-County, Illinois · implied b. ~1915 — 5 household members
| Surname | Harris |
| Given Name | Thomas D. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Alton City |
| 1935 Residence (County) | Madison |
| Occupation | Clerk |
| Industry | Insurance |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 266 |
| Highest Grade | C 2 |
| 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 Harris across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Wm Harris (~0.92 confidence) and father Hugh Harris (~0.92 confidence) and mother Ethel Harris (~0.92 confidence) and mother Ethel Harris (~0.92 confidence) and mother Ethel Harris (~0.92 confidence) and mother Esther Harris (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Wm Harris
b. ~1875
Source father
● Household
· direct · ~0.92
Father
Hugh Harris
b. ~1875
Source father
● Household
· direct · ~0.92
Mother
Ethel Harris
b. ~1875
Source mother
● Household
· direct · ~0.92
Mother
Ethel Harris
b. ~1881
Source mother
● Household
· direct · ~0.92
Mother
Ethel Harris
b. ~1881
Source mother
● Household
· direct · ~0.92
Mother
Esther Harris
b. ~1881
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Thomas Harris
Son · 1940 · age 25 · b. ~1915 · Illinois
★ You are viewing this record
Sibling
John Harris
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Harris
Sibling · 1940 · age 27
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 — Madison-County, Illinois
Open full size
1940 US Federal Census — Madison-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00848-00296)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Virginia Lawson | 18 | Daughter | Box Maker | Illinois |
| 2 | Charles Lawson | 15 | Son | — | Illinois |
| 3 | Louis Green | 36 | Head | Meat Cutter | Illinois |
| 4 | Mae Green | 36 | Wife | — | Illinois |
| 5 | Judith Green | 1 | Daughter | — | Illinois |
| 6 | Block Ends | None | — | — | — |
| 7 | Earl Falcon | 28 | Head | Manager | Missouri |
| 8 | Virginia Falcon | 27 | Wife | — | Missouri |
| 9 | Dorothy Bolains | 35 | Head | School Teacher | Illinois |
| 10 | Margaret Bolains | 74 | Mother | — | Illinois |
| 11 | J. Fred Berry | 36 | Head | Personal Manager | Illinois |
| 12 | Helen Berry | 30 | Wife | — | Illinois |
| 13 | Frank Friard | 42 | Head | Census Enumerator | Indiana |
| 14 | Frieda Friard | 44 | Wife | — | Illinois |
| 15 | Frank Friard | 14 | Son | — | Illinois |
| 16 | Earl Herzberger | 49 | Head | Agent | Illinois |
| 17 | Grace Herzberger | 44 | Wife | — | Illinois |
| 18 | Gertrude Jeddon | 76 | Mother-in-law | — | Illinois |
| 19 | Marjorie Herzberger | 19 | Daughter | — | Illinois |
| 20 | Albert E. Faulstich | 50 | Head | Electric | Illinois |
| 21 | Elizabeth Faulstich | 52 | Wife | — | Illinois |
| 22 | Mary Mcguire | 54 | Head | Music Teacher | Illinois |
| 23 | Mike Sweeney | 57 | Head | Stationary Engineer | Illinois |
| 24 | Rose Sweeney | 59 | Wife | — | Illinois |
| 25 | Allan Sweeney | 24 | Son | — | Illinois |
| 26 | Edward Sweeney | 23 | Son | Jr Engineer | Illinois |
| 27 | Block End | None | — | — | — |
| 28 | Ethel B. Harris | 65 | Head | Reader | Ohio |
| 29 | Ethel B. Harris | 59 | Wife | — | North Carolina |
| 30 | Joseph B. Harris | 27 | Son | C. Engineer | Illinois |
| 31 | Thomas D. Harris THIS PERSON | 25 | Son | Clerk | Illinois |
| 32 | John L. Harris | 22 | Son | Ice | Illinois |
| 33 | Carrie Shelton | 51 | Head | — | Illinois |
| 34 | Egbert Shelton | 30 | Brother | — | Kentucky |
| 35 | Glover Edwards | 34 | Head | Salesman | Illinois |
| 36 | Georgia Edwards | 19 | Wife | — | Nebraska |
| 37 | William Roglio | 27 | Head | Technical | Illinois |
| 38 | Grace Roglio | 23 | Wife | — | Illinois |
| 39 | Vincent Hohe | 23 | Head | Salesman | Illinois |
| 40 | Maurice Hohe | 22 | Wife | Clerk | Illinois |
Pedigree Summary
Thomas + 2 siblings
Gen 1 · 6 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)