JT
John Thomas — 1930 US Census Record
Model Tree available1930 United States Federal Census · Ringgold, Iowa
Our Model Tree links this John Thomas across the 1910, 1920 and 1930 US Censuses in Ringgold, Iowa (XGBoost, ~Confirmed), with identified parents Corwin & Corwin — first a son (b.~1904), then head of a 4-person household.
Age 26
b. ~1904
Male
Son
Born: Iowa
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Ringgold, Iowa |
| Surname | Thomas |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Additional Details | |
| Occupation | Contractor |
| Industry | County Road |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Contractor |
| Township / Ward | Middle Fork Township |
| 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 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Ruth Thomas | Daughter | — | 17 | ~1913 |
| Corwin Thomas | Head | — | 48 | ~1882 |
| John Thomas | Son | — | 26 | ~1904 |
| Ollie Thomas | Spouse | — | 47 | ~1883 |
Census Appearances
1910
Ringgold, Iowa
Son, age 6
Ringgold, Iowa · implied b. ~1904 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | John E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1920
Ringgold, Iowa
Son, age 15
Ringgold, Iowa · implied b. ~1905 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Ringgold, Iowa
Son, age 26
Ringgold, Iowa · implied b. ~1904 — 4 household members
| Surname | Thomas |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | Contractor |
| Industry | County Road |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 John Thomas across 3 US Census years (1910, 1920 and 1930) in Ringgold, Iowa, using XGBoost record linkage. Identified parents: father Corwin Thomas (~0.92 confidence) and father Corwin Thomas (~0.92 confidence) and father S Thomas (~0.92 confidence) and mother Effie Thomas (~0.92 confidence) and mother Ollie Thomas (~0.92 confidence) and mother Ollie Thomas (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Corwin Thomas
b. ~1883
Source father
● Household
· direct · ~0.92
Father
Corwin Thomas
b. ~1882
Source father
● Household
· direct · ~0.92
Father
S Thomas
b. ~1882
Source father
● Household
· direct · ~0.92
Mother
Effie Thomas
b. ~1883
Source mother
● Household
· direct · ~0.92
Mother
Ollie Thomas
b. ~1883
Source mother
● Household
· direct · ~0.92
Mother
Ollie Thomas
b. ~1883
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Thomas
Son · 1930 · age 26 · b. ~1904 · Iowa
★ You are viewing this record
Sibling
Ruth Thomas
Sibling · 1930 · age 17
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 — Ringgold, Iowa
Open full size
1930 US Federal Census — Ringgold, Iowa
Page Contents
50 people indexed on this census page (ia:1930:iowacensus00reel680:0536)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Clayton Bagley | 20 | Head | Farmer | Missouri |
| 2 | Marie Bagley | 22 | Wife | — | Missouri |
| 3 | Corwin Thomas | 48 | Head | Farmer | Iowa |
| 4 | Ollie Thomas | 47 | Wife | — | Iowa |
| 5 | John Thomas THIS PERSON | 26 | Son | Contractor | Iowa |
| 6 | Ruth Thomas | 17 | Daughter | — | Iowa |
| 7 | Homer Smith | 35 | Head | Farmer | Missouri |
| 8 | Ella Smith | 38 | Wife | — | Iowa |
| 9 | Arroll Smith | 13 | Son | — | Iowa |
| 10 | Leroy Skinner | 37 | Head | Farmer | Iowa |
| 11 | Ealey Skinner | 29 | Wife | — | Iowa |
| 12 | Doris Skinner | 6 | Daughter | — | Iowa |
| 13 | Lincoln Stuck | 65 | Head | Farmer | Iowa |
| 14 | Bennie Stuck | 60 | Wife | — | Iowa |
| 15 | Florence Stuck | 30 | Daughter | — | Iowa |
| 16 | Iva Stuck | 20 | Daughter | — | Iowa |
| 17 | John Stuck | 23 | Son | — | Iowa |
| 18 | Noel Stuck | 20 | Son | — | Iowa |
| 19 | Meda Stuck | 18 | Daughter | — | Iowa |
| 20 | Otto Saltzman | 22 | Head | Farmer | Iowa |
| 21 | Grace Saltzman | 19 | Wife | — | Iowa |
| 22 | William Kelley | 37 | Head | Farmer | Iowa |
| 23 | Lila Kelley | 23 | Wife | — | Iowa |
| 24 | William Luce | 60 | Head | Farmer | Iowa |
| 25 | Eliza Luce | 55 | Wife | — | Iowa |
| 26 | Ella Luce | 21 | Daughter | — | Iowa |
| 27 | Clark Kinney | 14 | Nephew | — | Iowa |
| 28 | Bessie Kinney | 12 | Niece | — | Iowa |
| 29 | Loretta Jordan | 62 | Head | Farmer | Iowa |
| 30 | Lee Hobbs | 47 | Head | Farmer | Illinois |
| 31 | Maude Hobbs | 43 | Wife | — | Missouri |
| 32 | Ruby Hobbs | 21 | Daughter | — | Missouri |
| 33 | Mary Hobbs | 17 | Daughter | — | Iowa |
| 34 | Rolland Hobbs | 14 | Son | — | Iowa |
| 35 | Loretta Hobbs | 11 | Daughter | — | Iowa |
| 36 | Helen Hobbs | 7 | Daughter | — | Iowa |
| 37 | Betty Hobbs | 3 | Daughter | — | Missouri |
| 38 | Daughter Hobbs | 0 | Daughter | — | Missouri |
| 39 | Albert Bagley | 46 | Head | Farmer | Iowa |
| 40 | Rachel Bagley | 45 | Wife | — | Missouri |
| 41 | Vincent Bagley | 15 | Son | — | Missouri |
| 42 | Esther Bagley | 10 | Daughter | — | Iowa |
| 43 | Albert Bagley | 7 | Son | — | Iowa |
| 44 | Arne Knight | 38 | Head | Farmer | Iowa |
| 45 | Florence Knight | 36 | Wife | — | Iowa |
| 46 | Leola Knight | 13 | Daughter | — | Iowa |
| 47 | Ethel Knight | 5 | Daughter | — | Iowa |
| 48 | John Clayton | 60 | Head | Farm Hand | Illinois |
| 49 | Julia Clayton | 60 | Wife | — | Iowa |
| 50 | John Ballinger | 37 | Head | Farmer | Iowa |
Pedigree Summary
John + 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)