RD
Robert Davidson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Fulton-County, Illinois
Our Model Tree links this Robert Davidson across the 1930 and 1940 US Censuses in Fulton-County, Illinois (XGBoost, ~Confirmed) — first a son (b.~1928), then head of a 9-person household.
Age 12
b. ~1928
Male
Son
Born: Illinois
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Fulton-County, Illinois |
| Surname | Davidson |
| Given Name | Robert L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Fulton |
| Additional Details | |
| Highest Grade | No 4 |
| 1935 Residence | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Cass Township |
| 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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Robert Davidson | Son | — | 12 | ~1928 |
| Russell Davidson | Son | — | 3 | ~1937 |
| Tessa Davidson | Spouse | — | 32 | ~1908 |
| Everett Davidson | Head | — | 58 | ~1882 |
| Audrey Davidson | Daughter | — | 4 | ~1936 |
| Annabelle Davidson | Daughter | — | 8 | ~1932 |
| Rosa Davidson | Daughter | — | 10 | ~1930 |
| Charles Davidson | Son | — | 1 | ~1939 |
| Mary Davidson | Daughter | — | 6 | ~1934 |
Census Appearances
1930
Fulton, Illinois
Son, age 1
Fulton, Illinois · implied b. ~1929 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davidson |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Fulton-County, Illinois
Son, age 12
Fulton-County, Illinois · implied b. ~1928 — 9 household members
| Surname | Davidson |
| Given Name | Robert L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Illinois |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Fulton |
| Highest Grade | No 4 |
| 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 Davidson across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Davidson
Son · 1940 · age 12 · b. ~1928 · Illinois
★ You are viewing this record
Sibling
Mary Davidson
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Audrey Davidson
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Annabelle Davidson
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rosa Davidson
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Russell Davidson
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Davidson
Sibling · 1940 · age 1
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 — Fulton-County, Illinois
Open full size
1940 US Federal Census — Fulton-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00805-00577)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Fern B. Taylor | 29 | Daughter | — | Illinois |
| 42 | William Bundeson | 75 | Head | Farmer | Illinois |
| 43 | James T. Bundeson | 64 | Brother | Farmer | Illinois |
| 44 | John C. Lundry | 45 | Head | Farmer | Illinois |
| 45 | Bernice Lundry | 41 | Wife | — | Illinois |
| 46 | Wilma L. Lundry | 17 | Daughter | — | Illinois |
| 47 | James C. Abbott | 54 | Head | Laborer | Illinois |
| 48 | Alice B. Abbott | 50 | Wife | — | Illinois |
| 49 | Ernest Nebergall | 24 | Head | In|Tr|Jr Slider | Illinois |
| 50 | Audrey J. Nebergall | 25 | Wife | — | Illinois |
| 51 | Alan Nebergall | 2 | Son | — | Illinois |
| 52 | Thomas Mahr | 56 | Head | Farmer | Illinois |
| 53 | Katie M. Mahr | 49 | Wife | — | Illinois |
| 54 | Leonard L. Mahr | 22 | Son | Farmer | Illinois |
| 55 | Verle K. Mahr | 13 | Son | — | Illinois |
| 56 | Sarah Cameron | 78 | Head | — | Illinois |
| 57 | Jesse A. Cameron | 75 | Cousin | — | Illinois |
| 58 | John W. Cameron | 50 | Head | Farmer | Illinois |
| 59 | Minnie M. Cameron | 48 | Wife | — | Illinois |
| 60 | Eveland Phoebe Cameron | 73 | Mother-in-law | — | Illinois |
| 61 | John J. Murphy | 73 | Head | — | Indiana |
| 62 | Thomas Widger | 61 | Head | Farmer | Illinois |
| 63 | Eva L. Widger | 54 | Wife | — | Illinois |
| 64 | Charles C. Widger | 16 | Son | — | Illinois |
| 65 | Ivan Widger | 23 | Son | Laborer | Illinois |
| 66 | Everett Davidson | 58 | Head | Farmer | Missouri |
| 67 | Tessa Davidson | 32 | Wife | — | Illinois |
| 68 | Robert L. Davidson THIS PERSON | 12 | Son | — | Illinois |
| 69 | Rosa M. Davidson | 10 | Daughter | — | Illinois |
| 70 | Annabelle Davidson | 8 | Daughter | — | Illinois |
| 71 | Mary L. Davidson | 6 | Daughter | — | Illinois |
| 72 | Audrey L. Davidson | 4 | Daughter | — | Illinois |
| 73 | Russell J. Davidson | 3 | Son | — | Illinois |
| 74 | Charles R. Davidson | 1 | Son | — | Illinois |
| 75 | Hiram S. Beatty | 49 | Head | Farmer | Illinois |
| 76 | Nellie M. Beatty | 44 | Wife | — | Illinois |
| 77 | Charles S. Beatty | 16 | Son | — | Illinois |
| 78 | Carroll E. Beatty | 5 | Son | — | Illinois |
| 79 | Donald Mason | 37 | Head | Farmer | Illinois |
| 80 | James H. Mason | 15 | Son | — | Illinois |
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)