RB
Robert Ball — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Piatt-County, Illinois
Our Model Tree links this Robert Ball across the 1930 and 1940 US Censuses in Piatt-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1919), then head of a 7-person household.
Age 21
b. ~1919
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Piatt-County, Illinois |
| Surname | Ball |
| Given Name | Robert K. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Bement |
| 1935 Residence (County) | Piatt |
| Additional Details | |
| Occupation | Cement finisher |
| Industry | Bld Const |
| Class of Worker | PW |
| Income (1939) | 368 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same house |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Cement Finisher |
| Township / Ward | Bement |
| Est. Birth Year | ~1919 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Allen Ball | Son | — | 18 | ~1922 |
| Clarence Ball | Son | — | 28 | ~1912 |
| Mary Ball | Daughter | — | 25 | ~1915 |
| Robert Ball | Son | — | 21 | ~1919 |
| Barbara Ball | Daughter | — | 14 | ~1926 |
| Elsie Ball | Spouse | — | 52 | ~1888 |
| Charles Ball | Head | — | 59 | ~1881 |
Census Appearances
1930
Piatt, Illinois
Son, age 11
Piatt, Illinois · implied b. ~1919 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Ball |
| Given Name | Robert H |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Kansas |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Piatt-County, Illinois
Son, age 21
Piatt-County, Illinois · implied b. ~1919 — 7 household members
| Surname | Ball |
| Given Name | Robert K. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Bement |
| 1935 Residence (County) | Piatt |
| Occupation | Cement finisher |
| Industry | Bld Const |
| Class of Worker | PW |
| Income (1939) | 368 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same house |
| 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 Ball across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Ball
Son · 1940 · age 21 · b. ~1919 · Illinois
★ You are viewing this record
Sibling
Allen Ball
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Ball
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Clarence Ball
Sibling · 1940 · age 28
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Barbara Ball
Sibling · 1940 · 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
1940 US Federal Census — Piatt-County, Illinois
Open full size
1940 US Federal Census — Piatt-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00867-00017)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Ella M. Maudlin | 61 | Wife | — | Illinois |
| 42 | Lois M. Curry | 34 | Daughter | Beauty Operator | Illinois |
| 43 | Robert D. Curry | 9 | Son | — | Illinois |
| 44 | Charles H. Ball | 59 | Head | Cement Worker | Illinois |
| 45 | Elsie Ball | 52 | Wife | — | Illinois |
| 46 | Clarence Ball | 28 | Son | Station Attendant | Illinois |
| 47 | Mary V. Ball | 25 | Daughter | Stenographer | Illinois |
| 48 | Robert K. Ball THIS PERSON | 21 | Son | Cement Finisher | Illinois |
| 49 | Allen H. Ball | 18 | Son | Truck Driver | Illinois |
| 50 | Barbara E. Ball | 14 | Daughter | — | Illinois |
| 51 | Elmer E. Logan | 77 | Head | Rail Road Agent | Indiana |
| 52 | Jeanette Mcmillion | 63 | Head | — | Missouri |
| 53 | Nora Mcmillion | 23 | Daughter | Seamstress | Illinois |
| 54 | Noah Cornell | 22 | Son-in-law | Laborer | Illinois |
| 55 | Violet Cornell | 23 | Daughter | — | Illinois |
| 56 | James Cornell | 1 | Son | — | Illinois |
| 57 | F. Earl Lucicous | Lucicous | 49 | Head | Signal Maintainer | Indiana |
| 58 | Ruthann Lucicous | Lucicous | 42 | Wife | — | Indiana |
| 59 | Francis Lucicous | Lucicous | 14 | Son | — | Illinois |
| 60 | Mary J. Lucicous | Lucicous | 10 | Daughter | — | Illinois |
| 61 | Ivan C. Pithoud | 39 | Brother-in-law | Carpenter | Indiana |
| 62 | Ethel H. Pithoud | 37 | Sister-in-law | — | South Dakota |
| 63 | David C. Pithoud | 4 | Nephew | — | Illinois |
| 64 | Jesse Nally | 73 | Head | — | Ireland |
| 65 | Mary A. Nally | 70 | Wife | — | Ireland |
| 66 | Ben Arnold | 60 | Head | Machine Helper | Illinois |
| 67 | Effie Arnold | 54 | Wife | — | Illinois |
| 68 | Anthon Peterson | 40 | Head | Carpenter | Illinois |
| 69 | Gertrude Peterson | 39 | Wife | — | Illinois |
| 70 | Anthon Jr. Peterson | 14 | Son | — | Illinois |
| 71 | Barney Slyter | 19 | Boarder | Janitor | Illinois |
| 72 | Frank Phillips | 74 | Boarder | Laborer | Illinois |
| 73 | Marcella Fairbank | 52 | Boarder | — | Wisconsin |
| 74 | Millard Fairbank | 38 | Boarder | Painter | Illinois |
| 75 | Edna Fairbank | 31 | Boarder | House Work | Illinois |
| 76 | Don Fairbank | 20 | Boarder | Truck Driver | Illinois |
| 77 | Ezekiel Here | 20 | Boarder | — | Illinois |
| 78 | Lillie Kurbs | 65 | Head | — | Illinois |
| 79 | Dymont Kurbs | 36 | Daughter | Seamstress | Illinois |
| 80 | Hamm Alphus | 23 | Head | Laborer | Illinois |
Related Census Records
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 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)