RC
Robert Curtis — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Whiteside-County, Illinois
Our Model Tree links this Robert Curtis across the 1930 and 1940 US Censuses in Whiteside-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1928), then head of a 8-person household.
Age 12
b. ~1928
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Whiteside-County, Illinois |
| Surname | Curtis |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Illinois |
| Additional Details | |
| Highest Grade | No 0 |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Rock Falls |
| Est. Birth Year | ~1928 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Virginia Curtis | Daughter | — | 14 | ~1926 |
| Dallas Curtis | Head | — | 32 | ~1908 |
| Stephanie Curtis | Spouse | — | 34 | ~1906 |
| Ruth Curtis | Daughter | — | 6 | ~1934 |
| Susan Curtis | Daughter | — | 1 | ~1939 |
| Daniel Curtis | Son | — | 11 | ~1929 |
| John Curtis | Son | — | 15 | ~1925 |
| Robert Curtis | Son | — | 12 | ~1928 |
Census Appearances
1930
Whiteside, Illinois
Son, age 2
Whiteside, Illinois · implied b. ~1928 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Curtis |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Whiteside-County, Illinois
Son, age 12
Whiteside-County, Illinois · implied b. ~1928 — 8 household members
| Surname | Curtis |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | Illinois |
| Highest Grade | No 0 |
| 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 Curtis across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Curtis
Son · 1940 · age 12 · b. ~1928 · Illinois
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Sibling
Susan Curtis
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Curtis
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Daniel Curtis
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Virginia Curtis
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Curtis
Sibling · 1940 · age 6
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 — Whiteside-County, Illinois
Open full size
1940 US Federal Census — Whiteside-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00905-00157)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Michael Hagvert | 59 | Head | Assembling Machinery | Hungary |
| 2 | Susan Hagvert | 52 | Wife | — | Hungary |
| 3 | Peter Hagvert | 25 | Son | Maker Steel Hooks | Illinois |
| 4 | Ann Hagvert | 22 | Daughter | Machine Operator | Illinois |
| 5 | William Montgomery | 56 | Head | Digging Sewers | Illinois |
| 6 | Amanda Montgomery | 55 | Wife | — | Illinois |
| 7 | Joyce Montgomery | 13 | Daughter | — | Illinois |
| 8 | Janet Montgomery | 11 | Daughter | — | Illinois |
| 9 | Ethel Montgomery | 14 | Daughter | — | Illinois |
| 10 | Lloyd Abell | 29 | Head | Draw Wire | Illinois |
| 11 | Harriet Abell | 75 | Mother | — | Canada |
| 12 | Leo Abell | 30 | Brother | Assistant Yardman | Illinois |
| 13 | Nettie Abell | 51 | Sister | Packing Hardware | Illinois |
| 14 | Ernest Sucher | 23 | Head | Car Washer | Illinois |
| 15 | Doris Sucher | 21 | Wife | — | Illinois |
| 16 | A. A. Thome | 76 | Head | Blacksmith | Illinois |
| 17 | Mary A. Thome | 59 | Wife | — | Ohio |
| 18 | Charles Lindsay | 22 | Head | Box Maker | Illinois |
| 19 | Irene Lindsay | 20 | Wife | — | Iowa |
| 20 | Shirley Ann Lindsay | 2 | Daughter | — | Illinois |
| 21 | Dallas Curtis | 32 | Head | Wire Gauging | Indiana |
| 22 | Stephanie Curtis | 34 | Wife | — | Illinois |
| 23 | John Curtis | 15 | Son | — | Illinois |
| 24 | Virginia Curtis | 14 | Daughter | — | Illinois |
| 25 | Daniel Curtis | 11 | Son | — | Illinois |
| 26 | Ruth Curtis | 6 | Daughter | — | Illinois |
| 27 | Robert Curtis THIS PERSON | 12 | Son | — | Illinois |
| 28 | Susan Curtis | 1 | Daughter | — | Illinois |
| 29 | Eldon Camper | 25 | Head | Waiter Restaurant | Illinois |
| 30 | Lucile Camper | 26 | Wife | — | Illinois |
| 31 | Theresa Camper | 10 | Daughter | — | Illinois |
| 32 | Janet Camper | 5 | Daughter | — | Illinois |
| 33 | Donna Camper | 3 | Daughter | — | Illinois |
| 34 | John Camper | 58 | Father | Helper Restaurant | Virginia |
| 35 | Effie Camper | 64 | Mother | Dishwasher Restaurant | Illinois |
| 36 | John Woodring | 30 | Head | Machinist | Illinois |
| 37 | Rettie Woodring | 26 | Wife | — | Illinois |
| 38 | Robert Woodring | 2 | Son | — | Illinois |
| 39 | Wilfred Hindrichs | 28 | Head | Driver Wholesale | Illinois |
| 40 | Genevieve Hindrichs | 27 | Wife | — | Iowa |
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)