TS
Thelma Smith — 1930 US Census Record
Model Tree available1930 United States Federal Census · Marion, Indiana
Our Model Tree links this Thelma Smith across the 1910, 1920 and 1930 US Censuses in Marion, Indiana (XGBoost, ~Confirmed), with identified parents Cornelius & Effie — first a daughter (b.~1905), then head of a 4-person household.
Age 25
b. ~1905
Female
Daughter
Born: Indiana
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Marion, Indiana |
| Surname | Smith |
| Given Name | Thelma |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Additional Details | |
| Occupation | File Clerk |
| Industry | General Office |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Occupation | File Clerk |
| Township / Ward | Indianapolis City |
| Est. Birth Year | ~1905 |
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 1930 census.
| Name | Relation to head | Relative to Thelma | Age | Birth yr |
|---|---|---|---|---|
| Thelma Smith | Daughter | — | 25 | ~1905 |
| Barbara Smith | Daughter | — | 2 | ~1928 |
| Henry Smith | Head | — | 46 | ~1884 |
| Mable Smith | Spouse | — | 47 | ~1883 |
Census Appearances
1910
Marion, Indiana
Daughter, age 3
Marion, Indiana · implied b. ~1907 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Thelma |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1920
Marion, Indiana
Daughter, age 15
Marion, Indiana · implied b. ~1905 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Thelma B. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Marion, Indiana
Daughter, age 25
Marion, Indiana · implied b. ~1905 — 4 household members
| Surname | Smith |
| Given Name | Thelma |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Occupation | File Clerk |
| Industry | General Office |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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 Thelma Smith across 3 US Census years (1910, 1920 and 1930) in Marion, Indiana, using XGBoost record linkage. Identified parents: father Cornelius Smith (~0.92 confidence) and mother Effie Smith (~0.92 confidence) and father Frank Smith (~0.92 confidence) and mother Emma Smith (~0.92 confidence) and mother Mable Smith (~0.92 confidence) and father Henry Smith (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Cornelius Smith
b. ~1866
Source father
● Household
· direct · ~0.92
Mother
Effie Smith
b. ~1873
Source mother
● Household
· direct · ~0.92
Father
Frank Smith
b. ~1875
Source father
● Household
· direct · ~0.92
Mother
Emma Smith
b. ~1876
Source mother
● Household
· direct · ~0.92
Mother
Mable Smith
b. ~1883
Source mother
● Household
· direct · ~0.92
Father
Henry Smith
b. ~1884
Source father
● Household
· direct · ~0.92
This person
Anchor record
Thelma Smith
Daughter · 1930 · age 25 · b. ~1905 · Indiana
★ You are viewing this record
Sibling
Barbara Smith
Sibling · 1930 · age 2
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
1930 US Federal Census — Marion, Indiana
Open full size
1930 US Federal Census — Marion, Indiana
Page Contents
50 people indexed on this census page (ia:1930:indianacensus00reel607:0808)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Elva Wagner | 60 | Head | — | Ohio |
| 2 | Charles Wagner | 20 | Son | Laborer | Ohio |
| 3 | Leadell Wagner | 18 | Daughter | Clerk | Indiana |
| 4 | John J Mintz | 46 | Head | Vice President | Poland |
| 5 | Clara J Mintz | 43 | Wife | — | Wisconsin |
| 6 | Robert O Mintz | 23 | Son | Chemist | Wisconsin |
| 7 | Margaret Mintz | 20 | Daughter | Stenographer | Wisconsin |
| 8 | Cathryn Mintz | 18 | Daughter | — | Wisconsin |
| 9 | Dorthy Mintz | 16 | Daughter | — | Indiana |
| 10 | Betty J Mintz | 10 | Daughter | — | Indiana |
| 11 | Charlotte Mintz | 7 | Daughter | — | Indiana |
| 12 | John Mintz | 5 | Son | — | Indiana |
| 13 | Spenser M Raymond | 42 | Head | Purchasing Agt | Indiana |
| 14 | Esther W Raymond | 38 | Wife | — | Indiana |
| 15 | Julia M Raymond | 13 | Daughter | — | Indiana |
| 16 | Herbert Lacy | 36 | Head | Clerk | Indiana |
| 17 | Minnie Lacy | 36 | Wife | — | Indiana |
| 18 | Eugene Lacy | 12 | Son | — | Indiana |
| 19 | Wendell Lacy | 7 | Son | — | Indiana |
| 20 | Richard Lacy | 0 | Son | — | Indiana |
| 21 | Harold M Jones | 37 | Head | Optometrist | Indiana |
| 22 | James D Jones | 5 | Son | — | Indiana |
| 23 | Edith L Infield | 51 | Sister | — | Indiana |
| 24 | Cecil E Webb | 33 | Head | Credit Man | Indiana |
| 25 | Mildred Webb | 25 | Wife | — | Indiana |
| 26 | Everett H Crabb | 45 | Head | Architect | Indiana |
| 27 | Gladys Crabb | 40 | Wife | — | Indiana |
| 28 | Tracy E Mitchell | 45 | Head | Conductor | Indiana |
| 29 | Myrtle Mitchell | 43 | Wife | — | Indiana |
| 30 | Benjamin Becon | 44 | Head | Architect | Indiana |
| 31 | Florence Becon | 41 | Wife | — | Wisconsin |
| 32 | Mildred Becon | 15 | Daughter | — | Indiana |
| 33 | Henry Smith | 46 | Head | Salesman | Indiana |
| 34 | Mable Smith | 47 | Wife | — | Indiana |
| 35 | Barbara Smith | 2 | Daughter | — | Indiana |
| 36 | Thelma Smith THIS PERSON | 25 | Daughter | File Clerk | Indiana |
| 37 | William R Widdup | 38 | Head | Car Inspector | Indiana |
| 38 | Helen Widdup | 38 | Wife | — | Indiana |
| 39 | Jane Widdup | 16 | Daughter | — | Indiana |
| 40 | Mary E Widdup | 13 | Daughter | — | Indiana |
| 41 | Helen T Widdup | 10 | Daughter | — | Indiana |
| 42 | Joanne Widdup | 4 | Daughter | — | Indiana |
| 43 | Harry E Kornell | 60 | O | Fireman | Indiana |
| 44 | Mary S Kornell | 58 | Wife | — | Indiana |
| 45 | Chris Kelly | 45 | O | Locomotive Engineer | Indiana |
| 46 | N. Charlotte Kelly | 45 | Wife | — | Indiana |
| 47 | Louise G Kelly | 20 | Daughter | Instructor | Indiana |
| 48 | Josephine C Kelly | 19 | Daughter | — | Indiana |
| 49 | Gertrude Montgomery | 66 | Mother-in-law | — | Illinois |
| 50 | Wirt C Hartley | 42 | O | Civil Engineer | Indiana |
Pedigree Summary
Thelma + 1 sibling
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 1930 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)