JT
Jack Thomas — 1930 US Census Record
Model Tree available1930 United States Federal Census · Henry, Iowa
Our Model Tree links this Jack Thomas across the 1910, 1920 and 1930 US Censuses in Henry, Iowa (XGBoost, ~Confirmed), with identified parents Ralph & Ralph — first a son (b.~1906), then head of a 4-person household.
Age 24
b. ~1906
Male
Son
Born: Iowa
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Henry, Iowa |
| Surname | Thomas |
| Given Name | Jack E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Additional Details | |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Mt Pleasant Town |
| Est. Birth Year | ~1906 |
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 Jack | Age | Birth yr |
|---|---|---|---|---|
| Ralph Thomas | Head | — | 43 | ~1887 |
| Frances Thomas | Spouse | — | 40 | ~1890 |
| Jack Thomas | Son | — | 24 | ~1906 |
| Marie Thomas | Daughter | — | 22 | ~1908 |
Census Appearances
1910
Henry, Iowa
Son, age 4
Henry, Iowa · implied b. ~1906 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Jack |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1920
Henry, Iowa
Son, age 14
Henry, Iowa · implied b. ~1906 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Jack |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| 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
Henry, Iowa
Son, age 24
Henry, Iowa · implied b. ~1906 — 4 household members
| Surname | Thomas |
| Given Name | Jack E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Veteran | No |
| 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 Jack Thomas across 3 US Census years (1910, 1920 and 1930) in Henry, Iowa, using XGBoost record linkage. Identified parents: father Ralph Thomas (~0.92 confidence) and father Ralph Thomas (~0.92 confidence) and father Ralph Thomas (~0.92 confidence) and mother Frances Thomas (~0.92 confidence) and mother Jennie Thomas (~0.92 confidence) and mother Vinnie Thomas (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Ralph Thomas
b. ~1887
Source father
● Household
· direct · ~0.92
Father
Ralph Thomas
b. ~1888
Source father
● Household
· direct · ~0.92
Father
Ralph Thomas
b. ~1887
Source father
● Household
· direct · ~0.92
Mother
Frances Thomas
b. ~1890
Source mother
● Household
· direct · ~0.92
Mother
Jennie Thomas
b. ~1890
Source mother
● Household
· direct · ~0.92
Mother
Vinnie Thomas
b. ~1890
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Jack Thomas
Son · 1930 · age 24 · b. ~1906 · Iowa
★ You are viewing this record
Sibling
Marie Thomas
Sibling · 1930 · age 22
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 — Henry, Iowa
Open full size
1930 US Federal Census — Henry, Iowa
Page Contents
50 people indexed on this census page (ia:1930:iowacensus00reel658:0939)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Alice L. Anderson | 15 | Daughter | — | Nebraska |
| 52 | Glen L. Anderson | 12 | Son | — | Iowa |
| 53 | Billy C. Anderson | 9 | Son | — | Iowa |
| 54 | Harrie K. Anderson | 4 | Son | — | Iowa |
| 55 | Stephen P. Nelson | 74 | Head | — | Iowa |
| 56 | Edith Nelson | 51 | Wife | — | Iowa |
| 57 | Joseph T. Nelson | 17 | Son | Laborer | Iowa |
| 58 | Ed J. Mellencamp | 43 | Head | Laborer | Iowa |
| 59 | Emma L. Mellencamp | 38 | Wife | — | Iowa |
| 60 | De Loris K. Mellencamp | 16 | Daughter | — | Iowa |
| 61 | Glen L. Mellencamp | 15 | Son | — | Iowa |
| 62 | Raymond H. Mellencamp | 13 | Son | — | Iowa |
| 63 | Ruth P. Mellencamp | 11 | Daughter | — | Iowa |
| 64 | Errol D. Mellencamp | 8 | Son | — | Iowa |
| 65 | Helen I. Mellencamp | 5 | Daughter | — | Iowa |
| 66 | Ralph Thomas | 43 | Head | Salesman | Iowa |
| 67 | Frances Thomas | 40 | Wife | — | Iowa |
| 68 | Jack E. Thomas THIS PERSON | 24 | Son | — | Iowa |
| 69 | Marie Thomas | 22 | Daughter | Stenographer | Iowa |
| 70 | John L. Chandler | 68 | Head | — | Iowa |
| 71 | Olive B. Chandler | 43 | Wife | — | Iowa |
| 72 | Robert W. Chandler | 8 | Son | — | Iowa |
| 73 | Will H. Thorn | 74 | Head | Janitor | Indiana |
| 74 | Jane M. Thorn | 64 | Wife | — | Illinois |
| 75 | Harley E. Smith | 46 | Head | Barber | Iowa |
| 76 | Mabel E. Smith | 42 | Wife | — | Iowa |
| 77 | Orville M. Smith | 20 | Son | — | Iowa |
| 78 | Agusta L. Smith | 17 | Daughter | — | Iowa |
| 79 | Irvin D. Smith | 14 | Son | — | Iowa |
| 80 | Charles Carlson | 76 | Head | — | Sweden |
| 81 | Anna M. Johnson | 69 | Housekeeper | Housekeeper | Sweden |
| 82 | Lewis W. Merlin | 65 | Head | — | Illinois |
| 83 | Verna R. Merlin | 53 | Wife | — | Iowa |
| 84 | Frank W. Arndorf | 24 | Head | Laborer | Nebraska |
| 85 | Hazel Arndorf | 24 | Wife | — | Nebraska |
| 86 | Elaine Arndorf | 0 | Daughter | — | Iowa |
| 87 | Ed Nichols | 33 | Head | Laborer | Iowa |
| 88 | Greta O. Nichols | 26 | Wife | — | Iowa |
| 89 | Ethelyn G. Nichols | 9 | Daughter | — | Iowa |
| 90 | Helen B. Nichols | 7 | Daughter | — | Iowa |
| 91 | Edna A. Nichols | 5 | Daughter | — | Iowa |
| 92 | Charles H. Piatt | 51 | Head | Carpenter | Illinois |
| 93 | Beulah Piatt | 46 | Wife | — | Iowa |
| 94 | Bruce Piatt | 21 | Son | Laborer | Iowa |
| 95 | Verne Piatt | 19 | Son | — | Oklahoma |
| 96 | Denver Piatt | 17 | Son | — | Iowa |
| 97 | Mary Piatt | 15 | Daughter | — | Iowa |
| 98 | Blanche Piatt | 12 | Daughter | — | Iowa |
| 99 | Alva S. Houseman | 65 | Head | — | Iowa |
| 100 | Bert Bruin | 40 | Head | Laborer | Iowa |
Pedigree Summary
Jack + 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)