RC
Robert Cooper — 1930 US Census Record
Model Tree available1930 United States Federal Census · Sangamon, Illinois
Our Model Tree links this Robert Cooper across the 1910, 1920 and 1930 US Censuses in Sangamon, Illinois (XGBoost, ~Confirmed), with identified parents John & John — first a son (b.~1907), then head of a 6-person household.
Age 23
b. ~1907
Male
Son
Born: Illinois
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Sangamon, Illinois |
| Surname | Cooper |
| Given Name | Robert L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Additional Details | |
| Occupation | Clerk |
| Industry | Grocery Store |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Clerk |
| Township / Ward | Williams Township |
| Est. Birth Year | ~1907 |
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.
6 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| John Cooper | Head | — | 50 | ~1880 |
| Emma Cooper | Other | — | 47 | ~1883 |
| James Cooper | Other | — | 81 | ~1849 |
| Harry Naylor | Other | — | 22 | ~1908 |
| John Cooper | Son | — | 14 | ~1916 |
| Robert Cooper | Son | — | 23 | ~1907 |
Census Appearances
1910
Sangamon, Illinois
Son, age 3
Sangamon, Illinois · implied b. ~1907 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Robert L |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Speaks English | English |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1920
Sangamon, Illinois
Son, age 12
Sangamon, Illinois · implied b. ~1908 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cooper |
| Given Name | Robert L. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Sangamon, Illinois
Son, age 23
Sangamon, Illinois · implied b. ~1907 — 6 household members
| Surname | Cooper |
| Given Name | Robert L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Clerk |
| Industry | Grocery Store |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 Cooper across 3 US Census years (1910, 1920 and 1930) in Sangamon, Illinois, using XGBoost record linkage. Identified parents: father John Cooper (~0.92 confidence) and father John Cooper (~0.92 confidence) and father John Cooper (~0.92 confidence) and mother Emma Cooper (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Cooper
b. ~1880
Source father
● Household
· direct · ~0.92
Father
John Cooper
b. ~1880
Source father
● Household
· direct · ~0.92
Father
John Cooper
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Emma Cooper
b. ~1884
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Cooper
Son · 1930 · age 23 · b. ~1907 · Illinois
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Sibling
John Cooper
Sibling · 1930 · age 14
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 — Sangamon, Illinois
Open full size
1930 US Federal Census — Sangamon, Illinois
Page Contents
50 people indexed on this census page (ia:1930:illinoiscensus00reel560:0163)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ben Cunningham | 52 | Head | Laborer | Kentucky |
| 2 | Alva Cunningham | 33 | Wife-H | — | Indiana |
| 3 | Evelyn B. Cunningham | 14 | Daughter | — | Indiana |
| 4 | Harry O. De Moulin | 22 | Head | Laborer | Illinois |
| 5 | Hazel S. De Moulin | 23 | Wife-H | — | Illinois |
| 6 | Hugh Nobrick | 42 | Head | Farmer | Illinois |
| 7 | Mary A. Nobrick | 69 | Mother | — | Illinois |
| 8 | Le Roy Mc Grath | 19 | Laborer | Laborer | Illinois |
| 9 | William J. Ball | 52 | Head | Farmer | Illinois |
| 10 | Francis E. Ball | 43 | Wife-H | — | Illinois |
| 11 | John W. Dennison | 47 | Head | Laborer | Kentucky |
| 12 | Mary A. Dennison | 46 | Wife-H | — | Kentucky |
| 13 | Myrtle B. Dennison | 11 | Daughter | — | Illinois |
| 14 | Floyd E. Dennison | 22 | Head | Laborer | Kentucky |
| 15 | Pauline M. Dennison | 18 | Wife-H | — | Illinois |
| 16 | Floyd C. Lynch | 36 | Head | Farmer | Kentucky |
| 17 | Virgie E. Lynch | 40 | Wife-H | — | Kentucky |
| 18 | Abe B. Fletcher | 31 | Head | Farmer | Illinois |
| 19 | Blanch S. Fletcher | 29 | Wife-H | — | Illinois |
| 20 | Juanita B. Fletcher | 7 | Daughter | — | Illinois |
| 21 | John H. Cravens | 40 | Head | Farmer | Kentucky |
| 22 | Lillie M. Cravens | 38 | Wife-H | — | Illinois |
| 23 | Ira D. Cravens | 8 | Son | — | Illinois |
| 24 | Merritt R. Cravens | 5 | Son | — | Illinois |
| 25 | Mary A. Cravens | 2 | Daughter | — | Illinois |
| 26 | Dorothy S. Cravens | 0 | Daughter | — | Illinois |
| 27 | Harold J. Hickey | 30 | Head | Farmer | Illinois |
| 28 | Hilda M. Hickey | 22 | Wife-H | — | Illinois |
| 29 | Noal Schmiedeke | 16 | Roomer | Laborer | Missouri |
| 30 | Robin E. Rahl | 47 | Head | Farmer | Illinois |
| 31 | Laura E. Rahl | 43 | Wife-H | — | Illinois |
| 32 | Russel R. Rahl | 16 | Son | — | Illinois |
| 33 | Lorena S. Rahl | 14 | Daughter | — | Illinois |
| 34 | Dorothy M. Rahl | 12 | Daughter | — | Illinois |
| 35 | Arthur J. Rahl | 10 | Son | — | Illinois |
| 36 | Alma A. Claypool | 60 | Head | Farmer | Illinois |
| 37 | Luvena M. Claypool | 35 | Daughter | — | Illinois |
| 38 | Henry C. Claypool | 26 | Son | Laborer | Illinois |
| 39 | John J. Cooper | 50 | Head | Truck Driver | Illinois |
| 40 | Emma R. Cooper | 47 | Wife-H | — | Illinois |
| 41 | Robert L. Cooper THIS PERSON | 23 | Son | Clerk | Illinois |
| 42 | John R. Cooper | 14 | Son | — | Illinois |
| 43 | James M. Cooper | 81 | Father | Painter | Illinois |
| 44 | Harry J. Naylor | 22 | Roomer | Laborer | Illinois |
| 45 | Robert H. Richardson | 62 | Head | Farmer | Illinois |
| 46 | Mary J. Richardson | 60 | Sister | — | Illinois |
| 47 | Edward D. Lloyd | 45 | Head | Laborer | Illinois |
| 48 | Nellie M. Lloyd | 35 | Wife-H | — | Illinois |
| 49 | Lawrence E. Rhodes | 13 | Son | — | Illinois |
| 50 | James H. Rhodes | 11 | Son | — | Illinois |
Pedigree Summary
Robert + 1 sibling
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 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)