TS
Theodore Smith — 1940 US Census Record
Model Tree available1940 United States Federal Census · Shiawassee-County, Michigan
Our Model Tree links this Theodore Smith across the 1920, 1930 and 1940 US Censuses in Shiawassee-County, Michigan (XGBoost, ~Confirmed), with identified parents James & Ione — first a head (b.~1904), then head of a 4-person household.
Age 36
b. ~1904
Male
Head
Born: Michigan
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Shiawassee-County, Michigan |
| Surname | Smith |
| Given Name | Theodore |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Michigan |
| 1935 Residence (City) | Owosso (City) |
| 1935 Residence (County) | Shiawassee |
| Additional Details | |
| Occupation | Machinist |
| Industry | Auto parts factory |
| Class of Worker | PW |
| Hours Worked | 50 |
| Income (1939) | 326 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
| Occupation | Machinist |
| Township / Ward | Owosso City |
| Est. Birth Year | ~1904 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Theodore | Age | Birth yr |
|---|---|---|---|---|
| Betty Smith | Daughter | — | 2 | ~1938 |
| Gladys Brown | Daughter | — | 18 | ~1922 |
| Theodore Smith | Head | — | 36 | ~1904 |
| Olive Smith | Spouse | — | 48 | ~1892 |
Census Appearances
1920
Shiawassee, Michigan
Son, age 15
Shiawassee, Michigan · implied b. ~1905 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Theodora |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1930
Shiawassee, Michigan
Son, age 26
Shiawassee, Michigan · implied b. ~1904 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Theodore |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Michigan |
| Father's Birthplace | Michigan |
| Mother's Birthplace | Michigan |
| Occupation | Laborer |
| Industry | Odd Jobs |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
1940
Shiawassee-County, Michigan
Head, age 36
Shiawassee-County, Michigan · implied b. ~1904 — 4 household members
| Surname | Smith |
| Given Name | Theodore |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Married |
| Birthplace | Michigan |
| 1935 Residence (City) | Owosso (City) |
| 1935 Residence (County) | Shiawassee |
| Occupation | Machinist |
| Industry | Auto parts factory |
| Class of Worker | PW |
| Hours Worked | 50 |
| Income (1939) | 326 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Michigan |
| Birth Country | United States |
| Birthplace (normalized) | michigan |
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 Theodore Smith across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father James Smith (~0.92 confidence) and mother Ione Smith (~0.92 confidence) and mother Cora Smith (~0.92 confidence) and father Glen Smith (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Smith
b. ~1858
Source father
● Household
· direct · ~0.92
Mother
Ione Smith
b. ~1862
Source mother
● Household
· direct · ~0.92
Mother
Cora Smith
b. ~1879
Source mother
● Household
· direct · ~0.92
Father
Glen Smith
b. ~1879
Source father
● Household
· direct · ~0.92
This person
Anchor record
Theodore Smith
Head · 1940 · age 36 · b. ~1904 · Michigan
★ 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 — Shiawassee-County, Michigan
Open full size
1940 US Federal Census — Shiawassee-County, Michigan
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01820-00784)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Lyle Hoyle | 40 | Head | Chauffeur | Michigan |
| 42 | Theresa Hoyle | 31 | Wife | Maid | Michigan |
| 43 | Lucile Hoyle | 9 | Daughter | — | Michigan |
| 44 | Peter E. Hoyle | 67 | Father | Chauffeur | Michigan |
| 45 | Lillian Hoyle | 63 | Mother | — | New York |
| 46 | W. Arthur Raymond | 60 | Head | — | Michigan |
| 47 | Cora May Raymond | 50 | Wife | — | Michigan |
| 48 | Herald Deweese | 32 | Head | Minister | Missouri |
| 49 | Nell Deweese | 33 | Wife | — | Missouri |
| 50 | Norman Deweese | 8 | Son | — | Missouri |
| 51 | Wanda Deweese | 3 | Daughter | — | Michigan |
| 52 | David Deweese | 1 | Son | — | Michigan |
| 53 | Carl Spiegel | 47 | Head | Laborer | Michigan |
| 54 | Edith Spiegel | 49 | Wife | — | Michigan |
| 55 | Margaret Teron | 56 | Head | Sales | Michigan |
| 56 | Earl Langdon | 30 | Head | Laborer | Michigan |
| 57 | Clara Langdon | 26 | Wife | — | Michigan |
| 58 | Rosemarie Langdon | 6 | Daughter | — | Michigan |
| 59 | Betty Joan Langdon | 4 | Daughter | — | Michigan |
| 60 | James Smith | 49 | Head | Manager | Michigan |
| 61 | Myrtle Smith | 43 | Wife | — | Michigan |
| 62 | Mary Taylor | 51 | Head | Machine Helper | Ohio |
| 63 | Charles Page | 41 | Brother | — | Ohio |
| 64 | George Lester | 36 | Head | Laborer | Michigan |
| 65 | Nellie Lester | 37 | Wife | — | Illinois |
| 66 | Dan Handley | 28 | Head | Machine Operator | Nebraska |
| 67 | Alice Handley | 32 | Wife | — | Michigan |
| 68 | Doreen Rae Handley | 2 | Daughter | — | Michigan |
| 69 | Dallas Delong | 30 | Head | Laborer | Ohio |
| 70 | Grace Delong | 22 | Wife | — | Ohio |
| 71 | William Clark | 75 | Head | Cattle Buyer | Michigan |
| 72 | Jennie Clark | 71 | Wife | — | Michigan |
| 73 | Tedal Mead | 30 | Grand Son | Truck Driver | Michigan |
| 74 | Marie Mead | 24 | Grand Daughter in law | — | Illinois |
| 75 | Betty June Mead | 5 | Great Grand Daughter | — | Michigan |
| 76 | Theodore Smith THIS PERSON | 36 | Head | Machinist | Michigan |
| 77 | Olive Smith | 48 | Wife | — | Michigan |
| 78 | Gladys Brown | 18 | Daughter | — | Michigan |
| 79 | Betty J. Smith | 2 | Daughter | — | Michigan |
| 80 | Hiram Monroe | 52 | Head | Truck Driver | Michigan |
Pedigree Summary
Theodore
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)