TS
Theresa Smith — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Sangamon-County, Illinois
Our Model Tree links this Theresa Smith across the 1920, 1930 and 1940 US Censuses in Sangamon-County, Illinois (XGBoost, ~Confirmed) — first a spouse (b.~1890), then head of a 7-person household.
Age 50
b. ~1890
Female
Spouse
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Sangamon-County, Illinois |
| Surname | Smith |
| Given Name | Theresa F. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Some House |
| 1935 Residence (County) | Some House |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Springfield |
| Est. Birth Year | ~1890 |
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 Theresa | Age | Birth yr |
|---|---|---|---|---|
| Walter Smith | Son | — | 10 | ~1930 |
| Edward Smith | Son | — | 26 | ~1914 |
| Charles Smith | Son | — | 11 | ~1929 |
| Theresa Smith | Spouse | — | 50 | ~1890 |
| George Smith | Son | — | 13 | ~1927 |
| David Smith | Son | — | 18 | ~1922 |
| George Smith | Head | — | 55 | ~1885 |
Census Appearances
1920
Sangamon, Illinois
Spouse, age 29
Sangamon, Illinois · implied b. ~1891 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Theresa E. |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Massachusetts |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Sangamon, Illinois
Other, age 40
Sangamon, Illinois · implied b. ~1890 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Theresa F. |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 40 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 21 |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Massachusetts |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Sangamon-County, Illinois
Spouse, age 50
Sangamon-County, Illinois · implied b. ~1890 — 7 household members
| Surname | Smith |
| Given Name | Theresa F. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Some House |
| 1935 Residence (County) | Some House |
| Highest Grade | No 8 |
| 1935 Residence | Same House |
| 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 Theresa Smith across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Theresa Smith
Spouse · 1940 · age 50 · b. ~1890 · Illinois
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Sangamon-County, Illinois
Open full size
1940 US Federal Census — Sangamon-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00886-00521)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Virginia D. Byrd | 54 | Wife | — | Illinois |
| 42 | Max Weaver | 27 | Head | Salesman | Illinois |
| 43 | Mary Weaver | 30 | Wife | — | Illinois |
| 44 | Richard Weaver | 3 | Son | — | Illinois |
| 45 | F. T. Bordon | 52 | Head | Office Manager | Indiana |
| 46 | Bessie M. Bordon | 43 | Wife | — | Illinois |
| 47 | J. F. Harmon | 28 | Head | Doctor | Oklahoma |
| 48 | Eleanor Harmon | 27 | Wife | — | Oklahoma |
| 49 | Thomas David Harmon | 1 | Son | — | Illinois |
| 50 | Anna Ihlenfeldt | 54 | Head | — | Illinois |
| 51 | Margaret Louise Ihlenfeldt | 35 | Daughter | Teacher | Illinois |
| 52 | Virginia Hester Ihlenfeldt | 24 | Daughter | — | Illinois |
| 53 | Robert R. Macleod | 56 | Head | Chief Auditor | Kansas |
| 54 | Clara Ruth Macleod | 56 | Wife | — | Illinois |
| 55 | Robert Malcolm Macleod | 25 | Son | — | Illinois |
| 56 | Irene Dudley | 18 | Maid | Maid | Kentucky |
| 57 | Paul Provitt | 37 | Head | Proprietor | Illinois |
| 58 | Mayza Provitt | 36 | Wife | — | Illinois |
| 59 | Paul Jr. Provitt | 11 | Son | — | Illinois |
| 60 | William Henry Green | 64 | Head | — | England |
| 61 | William Eric Green | 38 | Son | Mill Wright | England |
| 62 | Marjorie Green | 32 | Daughter | Machine Operator | England |
| 63 | Dorothy Anne Green | 24 | Daughter | Stenographer | England |
| 64 | Lucy Cooke | 67 | Sister | — | England |
| 65 | Charles S. Cranbell | 38 | Head | Office Manager | Iowa |
| 66 | Nancy Cranbell | 31 | Wife | — | Illinois |
| 67 | Marjorie Ann Cranbell | 3 | Daughter | — | Illinois |
| 68 | Gene Smothers | 27 | Head | Secretary | Illinois |
| 69 | Ethel Smothers | 27 | Wife | — | Illinois |
| 70 | Carolyn Sue Smothers | 3 | Daughter | — | Illinois |
| 71 | George M. Smith | 55 | Head | Superintendent | Illinois |
| 72 | Theresa F. Smith THIS PERSON | 50 | Wife | — | Illinois |
| 73 | Edward A. Smith | 26 | Son | Clerk | Illinois |
| 74 | David L. Smith | 18 | Son | — | Illinois |
| 75 | George Jr. Smith | 13 | Son | — | Illinois |
| 76 | Charles Smith | 11 | Son | — | Illinois |
| 77 | Walter Smith | 10 | Son | — | Illinois |
| 78 | R. E. Price | 49 | Head | Clerk | Illinois |
| 79 | Anna Price | 46 | Wife | — | Illinois |
| 80 | Raymond Price | 25 | Son | Clerk | 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)