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Robert Williamson — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Menard-County, Illinois
Our Model Tree links this Robert Williamson across the 1920, 1930 and 1940 US Censuses in Menard-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1867), then head of a 5-person household.
Age 73
b. ~1867
Male
Head
Born: Scotland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Menard-County, Illinois |
| Surname | Williamson |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 73 |
| Marital Status | Married |
| Birthplace | Scotland |
| 1935 Residence (City) | (Part) Petersburg |
| 1935 Residence (County) | Menard |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 84 |
| Income (1939) | 0 |
| Highest Grade | No 5 |
| 1935 Residence | Illinois |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
| Occupation | Farmer |
| Township / Ward | Part Petersburg |
| Est. Birth Year | ~1867 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| George Ulery | Other | — | 52 | ~1888 |
| Robert Williamson | Head | — | 73 | ~1867 |
| Charles Williamson | Other | — | 67 | ~1873 |
| Sarah Ulery | Daughter | — | 46 | ~1894 |
| Annie Williamson | Spouse | — | 71 | ~1869 |
Census Appearances
1920
Menard, Illinois
Head, age 52
Menard, Illinois · implied b. ~1868 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williamson |
| Given Name | Robert G. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Scotland |
| Year of Immigration | 1867 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | Farmer |
| Industry | General Farm |
| Class of Worker | Emp |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth Country | Scotland |
| Year of Naturalization | 1892 |
| Birthplace (normalized) | scotland |
1930
Menard, Illinois
Head, age 63
Menard, Illinois · implied b. ~1867 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williamson |
| Given Name | Robert G |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 63 |
| Marital Status | Married |
| Birthplace | Scotland |
| Naturalization Status | Naturalized |
| Year of Immigration | 1884 |
| Age at First Marriage | 24 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Scotland |
| Occupation | farmer |
| Industry | grain farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | Scotch |
| Home Owned/Rented | R |
| Home Value / Rent | 10 |
| Veteran | No |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
1940
Menard-County, Illinois
Head, age 73
Menard-County, Illinois · implied b. ~1867 — 5 household members
| Surname | Williamson |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 73 |
| Marital Status | Married |
| Birthplace | Scotland |
| 1935 Residence (City) | (Part) Petersburg |
| 1935 Residence (County) | Menard |
| Naturalization Status | Naturalized |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Hours Worked | 84 |
| Income (1939) | 0 |
| Highest Grade | No 5 |
| 1935 Residence | Illinois |
| Birth Country | Scotland |
| Birthplace (normalized) | scotland |
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 Williamson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Robert Williamson
Head · 1940 · age 73 · b. ~1867 · Illinois
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Menard-County, Illinois
Open full size
1940 US Federal Census — Menard-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00857-00236)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | L. Edmund Hillin | 64 | Head | Farmer | Kentucky |
| 2 | Gertrude E. Hillin | 58 | Wife | — | Illinois |
| 3 | W. K. Jones | 64 | Head | Retired-Farmer | Illinois |
| 4 | Charles R. Wood | 54 | Head | Farmer | Nebraska |
| 5 | Theresa Wood | 51 | Wife | — | Illinois |
| 6 | George W. Rothelt | 46 | Head | Farmer | Illinois |
| 7 | Olah O. Rothelt | 39 | Wife | — | Illinois |
| 8 | Kathleen Rothelt | 14 | Daughter | — | Illinois |
| 9 | Charles Duncan | 34 | Head | Farm-Laborer | Kentucky |
| 10 | Frances Duncan | 31 | Wife | — | Illinois |
| 11 | Flora M. Duncan | 14 | Daughter | — | Illinois |
| 12 | Leona Duncan | 12 | Daughter | — | Illinois |
| 13 | Charline Duncan | 8 | Daughter | — | Illinois |
| 14 | Ralph Benton | 43 | Head | Farm-Laborer | Illinois |
| 15 | Breda Benton | 41 | Wife | — | Illinois |
| 16 | Margaret Benton | 17 | Daughter | — | Illinois |
| 17 | Mildred Benton | 15 | Daughter | — | Illinois |
| 18 | Elsie Benton | 10 | Daughter | — | Illinois |
| 19 | Edward Denecke | 65 | Head | Retired-Farmer | Germany |
| 20 | Lizzie Denecke | 64 | Wife | — | Germany |
| 21 | Margaret Denecke | 40 | Daughter | — | Illinois |
| 22 | Edna Denecke | 28 | Daughter | — | Illinois |
| 23 | Henry Denecke | 60 | Brother | — | Germany |
| 24 | Darrell Tripp | 18 | Hired-Hand | Farm-Laborer | Illinois |
| 25 | David C. Alter | 31 | Head | Farmer | Illinois |
| 26 | Alma Alter | 25 | Wife | — | Illinois |
| 27 | Kenneth D. Alter | 1 | Son | — | Illinois |
| 28 | Robert Williamson THIS PERSON | 73 | Head | Farmer | Scotland |
| 29 | Annie Williamson | 71 | Wife | — | Scotland |
| 30 | Charles Williamson | 67 | Brother | Retired-Laborer | Scotland |
| 31 | George Ulery | 52 | Son-in-law | Farmer | Illinois |
| 32 | Sarah Ulery | 46 | Daughter | — | Illinois |
| 33 | Walter F. Jewell | 46 | Head | Mine-Operator | Missouri |
| 34 | Alice Jewell | 63 | Mother | — | Illinois |
| 35 | Alice A. Jewell | 12 | Daughter | — | Illinois |
| 36 | Dorothy M. Jewell | 11 | Daughter | — | Illinois |
| 37 | Barbara Mcnabb | 83 | Head | Farmer | New York |
| 38 | Cassie Tookey | 50 | Daughter | — | Illinois |
| 39 | Jesse Bell | 43 | Head | Mine-Operator | Illinois |
| 40 | Ola Bell | 47 | Wife | — | 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)