RP
Robert Pierce — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Hamilton-County, Illinois
Our Model Tree links this Robert Pierce across the 1930 and 1940 US Censuses in Hamilton-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1927), then head of a 10-person household.
Age 13
b. ~1927
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Hamilton-County, Illinois |
| Surname | Pierce |
| Given Name | Robert Lee |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Hamilton |
| Additional Details | |
| Highest Grade | No 7 |
| 1935 Residence | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Knights Prairie Township |
| Est. Birth Year | ~1927 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Gladys Pierce | Daughter | — | 2 | ~1938 |
| Jewell Pierce | Son | — | 4 | ~1936 |
| James Pierce | Son | — | 3 | ~1937 |
| Ella Pierce | Daughter | — | 9 | ~1931 |
| Thomas Pierce | Son | — | 7 | ~1933 |
| Charles Pierce | Son | — | 11 | ~1929 |
| Lela Pierce | Spouse | — | 36 | ~1904 |
| Robert Pierce | Son | — | 13 | ~1927 |
| Junie Pierce | Head | — | 36 | ~1904 |
| Helen Pierce | Daughter | — | 5 | ~1935 |
Census Appearances
1930
Hamilton, Illinois
Son, age 3
Hamilton, Illinois · implied b. ~1927 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Pierce |
| 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 |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Hamilton-County, Illinois
Son, age 13
Hamilton-County, Illinois · implied b. ~1927 — 10 household members
| Surname | Pierce |
| Given Name | Robert Lee |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Hamilton |
| Highest Grade | No 7 |
| 1935 Residence | Illinois |
| 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 Pierce across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Pierce
Son · 1940 · age 13 · b. ~1927 · Illinois
★ You are viewing this record
Sibling
Thomas Pierce
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Pierce
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ella Pierce
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jewell Pierce
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Pierce
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Pierce
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gladys Pierce
Sibling · 1940 · age 2
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 — Hamilton-County, Illinois
Open full size
1940 US Federal Census — Hamilton-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00809-00719)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Son Everett | None | M | Farm | — |
| 2 | Daughter Fayie Belle | None | F | Private Home | — |
| 3 | Riley M. Lawrence | 58 | Head | Farming | Illinois |
| 4 | Cora Belle Lawrence | 45 | Wife | Housekeeper | Illinois |
| 5 | Ruth Lawrence | 23 | Daughter | Housekeeper | Illinois |
| 6 | Kermit Lawrence | 20 | Son | New Worker | Illinois |
| 7 | Lois Fern Lawrence | 16 | Daughter | New Worker | Illinois |
| 8 | Samuel M. Gibbs | 73 | Head | Farming | Illinois |
| 9 | Harriett L. Gibbs | 69 | Wife | Housekeeper | Illinois |
| 10 | John T. Schooper | 61 | Head | Farming | Illinois |
| 11 | Dora Schooper | 67 | Wife | Housekeeper | Illinois |
| 12 | John E. Schooper | 19 | Son | Farming | Illinois |
| 13 | Martin T. Snyder | 80 | Head | Farming | Ohio |
| 14 | Trophia A. Snyder | 71 | Wife | Housekeeper | Pennsylvania |
| 15 | Earl Ward | 27 | Head | Farming | Illinois |
| 16 | Beulah Pearl Ward | 25 | Wife | Housekeeping | Illinois |
| 17 | James Earl Ward | 2 | Son | — | Illinois |
| 18 | Richard Lee Ward | 1 | Son | — | Illinois |
| 19 | Levi Sappe | 35 | Head | Farming | Illinois |
| 20 | Georgia Sappe | 34 | Wife | Housekeeping | Illinois |
| 21 | Charles Burton Sappe | 2 | Son | — | Illinois |
| 22 | Janice Ann Sappe | 0 | Daughter | — | Illinois |
| 23 | Junie W. Pierce | 36 | Head | Farming | Illinois |
| 24 | Lela Pierce | 36 | Wife | Housekeeping | Illinois |
| 25 | Robert Lee Pierce THIS PERSON | 13 | Son | — | Illinois |
| 26 | Charles Edward Pierce | 11 | Son | — | Illinois |
| 27 | Ella Pearl Pierce | 9 | Daughter | — | Illinois |
| 28 | Thomas Emery Pierce | 7 | Son | — | Illinois |
| 29 | Helen May Pierce | 5 | Daughter | — | Illinois |
| 30 | Jewell Eugene Pierce | 4 | Son | — | Illinois |
| 31 | James Emmett Pierce | 3 | Son | — | Illinois |
| 32 | Gladys Marie Pierce | 2 | Daughter | — | Illinois |
| 33 | Ralph W. Neal | 33 | Head | Farming | Illinois |
| 34 | Clara Neal | 30 | Wife | Housekeeper | Illinois |
| 35 | Elbert Boyles | 42 | Head | Farming | Illinois |
| 36 | Lela Boyles | 38 | Wife | Housekeeper | Illinois |
| 37 | Earline Boyles | 19 | Daughter | New Worker | Illinois |
| 38 | Albert Richardson | 42 | Head | Farming | Illinois |
| 39 | Dana Richardson | 36 | Wife | Housekeeper | Illinois |
| 40 | Norman M. Richardson | 9 | Son | — | 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)