RT
Robert Thomas — 1930 US Census Record
Model Tree available1930 United States Federal Census · Rio Blanco, Colorado
Our Model Tree links this Robert Thomas across the 1910, 1920 and 1930 US Censuses in Rio Blanco, Colorado (XGBoost, ~Confirmed), with identified parents William & William — first a son (b.~1909), then head of a 5-person household.
Age 21
b. ~1909
Male
Son
Born: Colorado
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Rio Blanco, Colorado |
| Surname | Thomas |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Township / Ward | Meeker Town |
| Est. Birth Year | ~1909 |
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.
5 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Bernice Thomas | Daughter | — | 13 | ~1917 |
| William Thomas | Head | — | 58 | ~1872 |
| Arthur Thomas | Son | — | 17 | ~1913 |
| Robert Thomas | Son | — | 21 | ~1909 |
| Rosa Thomas | Spouse | — | 53 | ~1877 |
Census Appearances
1910
Rio Blanco, …
Son, age 1
Rio Blanco, Colorado · implied b. ~1909 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1920
Rio Blanco, …
Son, age 11
Rio Blanco, Colorado · implied b. ~1909 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Robert W. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | Farm Laborer |
| Industry | Home Farm |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1930
Rio Blanco, …
Son, age 21
Rio Blanco, Colorado · implied b. ~1909 — 5 household members
| Surname | Thomas |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
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 Robert Thomas across 3 US Census years (1910, 1920 and 1930) in Rio Blanco, Colorado, using XGBoost record linkage. Identified parents: father William Thomas (~0.92 confidence) and father William Thomas (~0.92 confidence) and mother Rosa Thomas (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Thomas
b. ~1872
Source father
● Household
· direct · ~0.92
Father
William Thomas
b. ~1872
Source father
● Household
· direct · ~0.92
Mother
Rosa Thomas
b. ~1877
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Thomas
Son · 1930 · age 21 · b. ~1909 · Colorado
★ You are viewing this record
Sibling
Arthur Thomas
Sibling · 1930 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bernice Thomas
Sibling · 1930 · age 13
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 — Rio Blanco, Colorado
Open full size
1930 US Federal Census — Rio Blanco, Colorado
Page Contents
50 people indexed on this census page (ia:1930:15thcensus250unitrs:0611)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Ernest H. Sprott | 44 | Head | Rancher | Iowa |
| 52 | Violet E. Sprott | 43 | Wife | — | England |
| 53 | Reginald J. Sprott | 12 | Son | — | Colorado |
| 54 | Edwin K. Sprott | 11 | Son | — | Colorado |
| 55 | Esme M. Sprott | 8 | Daughter | — | Colorado |
| 56 | William A. Thomas | 58 | Head | Contractor | Iowa |
| 57 | Rosa E. Thomas | 53 | Wife | — | Iowa |
| 58 | Robert Thomas THIS PERSON | 21 | Son | — | Colorado |
| 59 | Arthur Thomas | 17 | Son | — | Colorado |
| 60 | Bernice Thomas | 13 | Daughter | — | Colorado |
| 61 | Everett N. Watson | 35 | Head | Laborer | Colorado |
| 62 | Hattie E. Watson | 34 | Wife | Servant | Michigan |
| 63 | Margery M. Watson | 11 | Daughter | — | Colorado |
| 64 | Jacqueline G. Watson | 9 | Daughter | — | Colorado |
| 65 | Letitia M. Watson | 7 | Daughter | — | Colorado |
| 66 | Carol Witheral | 19 | Head | Rancher | Oklahoma |
| 67 | Dorothy Witheral | 17 | Wife | — | Missouri |
| 68 | Guy Ab. Walden | 54 | Head | Laborer | Missouri |
| 69 | Ma Ab. Walden | None | Wife | — | Unknown |
| 70 | Dick Ab. Walden | 21 | Son | — | Colorado |
| 71 | Truman C. Wheeler | 37 | Head | Laborer | Illinois |
| 72 | Inez Wheeler | 27 | Wife | — | Michigan |
| 73 | Leonard P. Valentine | 25 | Head | Laborer | Colorado |
| 74 | Eiley A. Valentine | 24 | Wife | — | Kansas |
| 75 | Betty R. Valentine | 1 | Daughter | — | Colorado |
| 76 | Arthur Kincher | 40 | Head | Mechanic | Iowa |
| 77 | Alice E. Kincher | 34 | Wife | — | Colorado |
| 78 | Edith O. Kincher | 15 | Daughter | — | Colorado |
| 79 | Elroy A. Kincher | 13 | Son | — | Colorado |
| 80 | Edward E. Kincher | 8 | Son | — | Colorado |
| 81 | Ethel G. Kincher | 6 | Daughter | — | Colorado |
| 82 | Lenius G. Cilertson | 40 | Head | Contractor | North Dakota |
| 83 | Armintha Cilertson | 28 | Wife | — | Colorado |
| 84 | Lenius Jr. Cilertson | 0 | Son | — | Colorado |
| 85 | Preston H. Amick | 15 | Nephew | — | Colorado |
| 86 | Wilma Amick | 13 | Niece | — | Colorado |
| 87 | Clinton S. Valentine | 43 | Head | Operator | South Dakota |
| 88 | Grace Valentine | 37 | Wife | — | Colorado |
| 89 | Joseph Valentine | 11 | Son | — | Colorado |
| 90 | William Valentine | 10 | Son | — | Colorado |
| 91 | Delsa Valentine | 7 | Daughter | — | Colorado |
| 92 | Edwin Valentine | 6 | Son | — | Colorado |
| 93 | William O. Sims | 50 | Head | Merchant | Missouri |
| 94 | Winifred F. Sims | 49 | Wife | — | Iowa |
| 95 | Willard E. Sims | 17 | Son | — | Colorado |
| 96 | Dorothy E. Sims | 11 | Daughter | — | Colorado |
| 97 | Laura M. Dunsmoor | 19 | Lodger | Teacher | Colorado |
| 98 | Helen L. Sargent | 21 | Lodger | Teacher | Missouri |
| 99 | Robert O. Linnard | 28 | Head | Clerk | Colorado |
| 100 | Elinor B. Linnard | 28 | Wife | — | Colorado |
Related Census Records
Pedigree Summary
Robert + 2 siblings
Gen 1 · 3 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)