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Ralph Williams — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Sangamon-County, Illinois
Our Model Tree links this Ralph Williams across the 1920, 1930 and 1940 US Censuses in Sangamon-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1907), then head of a 3-person household.
Age 33
b. ~1907
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Sangamon-County, Illinois |
| Surname | Williams |
| Given Name | Ralph |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Springfield |
| 1935 Residence (County) | Sangamon |
| Additional Details | |
| Occupation | Pay Clerk |
| Industry | Public Service |
| Class of Worker | GW |
| Hours Worked | 44 |
| Income (1939) | 766 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Pay Clerk |
| Township / Ward | Springfield |
| Est. Birth Year | ~1907 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Ralph | Age | Birth yr |
|---|---|---|---|---|
| Barbara Williams | Daughter | — | 7 | ~1933 |
| Ralph Williams | Head | — | 33 | ~1907 |
| Mary Williams | Spouse | — | 31 | ~1909 |
Census Appearances
1920
Sangamon, Illinois
Son, age 13
Sangamon, Illinois · implied b. ~1907 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williams |
| Given Name | Ralph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Illinois |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Sangamon, Illinois
Head, age 23
Sangamon, Illinois · implied b. ~1907 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Williams |
| Given Name | Ralph |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 21 |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Payroll Clerk |
| Industry | Public Service Co |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 45 |
| Radio Set | R |
| Veteran | No |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Sangamon-County, Illinois
Head, age 33
Sangamon-County, Illinois · implied b. ~1907 — 3 household members
| Surname | Williams |
| Given Name | Ralph |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Springfield |
| 1935 Residence (County) | Sangamon |
| Occupation | Pay Clerk |
| Industry | Public Service |
| Class of Worker | GW |
| Hours Worked | 44 |
| Income (1939) | 766 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| 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 Ralph Williams across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Ralph Williams
Head · 1940 · age 33 · b. ~1907 · 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 — Sangamon-County, Illinois
Open full size
1940 US Federal Census — Sangamon-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00885-00076)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | George H. Donagan | 42 | Head | Woodworker | Illinois |
| 2 | Mary Donagan | 39 | Wife | — | Illinois |
| 3 | Benjamin Donagan | 15 | Son | Mechanic | Illinois |
| 4 | Annie Donagan | 14 | Daughter | — | Illinois |
| 5 | William Madison | 24 | Head | Janitor | Illinois |
| 6 | Elizabeth Madison | 19 | Wife | — | Illinois |
| 7 | Patrick J. Dougherty | 42 | Head | Truck Driver | Illinois |
| 8 | Blanche Dougherty | 37 | Wife | — | Illinois |
| 9 | James P. Dougherty | 13 | Son | — | Illinois |
| 10 | Frances Dougherty | 11 | Daughter | — | Illinois |
| 11 | Mary Dougherty | 9 | Daughter | — | Illinois |
| 12 | Lawrence Dougherty | 8 | Son | — | Illinois |
| 13 | Margaret Dougherty | 5 | Daughter | — | Illinois |
| 14 | Leo Dougherty | 2 | Son | — | Illinois |
| 15 | Laura Barregan | 72 | Head | — | Illinois |
| 16 | Maurice Barregan | 41 | Son | Apprentice Machinist | Illinois |
| 17 | John C. Murphy | 37 | Head | Proprietor | Illinois |
| 18 | Mary Murphy | 30 | Wife | — | Illinois |
| 19 | John Murphy | 14 | Son | — | Illinois |
| 20 | Thomas Murphy | 12 | Son | — | Illinois |
| 21 | George M. Pendergast | 71 | Head | Janitor | Illinois |
| 22 | Marie Pendergast | 44 | Daughter | Maid | Illinois |
| 23 | John Pendergast | 42 | Son | Janitor | Illinois |
| 24 | George Pendergast | 37 | Son | — | Illinois |
| 25 | Marie Halfpenny | 27 | Niece | Typist | Illinois |
| 26 | Ambrose Hancock | 44 | Head | Brick Mason | Illinois |
| 27 | Esther Hancock | 45 | Wife | — | Illinois |
| 28 | Alice Hancock | 17 | Daughter | — | Illinois |
| 29 | Clifford L. Routzahn | 63 | Head | Civil Engineer | Ohio |
| 30 | Ella Routzahn | 63 | Wife | — | New York |
| 31 | Arthur B. Pyle | 61 | Head | Road Master | Illinois |
| 32 | Mabel Pyle | 56 | Wife | — | Illinois |
| 33 | Ralph Williams THIS PERSON | 33 | Head | Pay Clerk | Illinois |
| 34 | Mary Williams | 31 | Wife | — | Illinois |
| 35 | Barbara Williams | 7 | Daughter | — | Illinois |
| 36 | Ralph C. Kessler | 45 | Head | Grocery Manager | Illinois |
| 37 | Florence Kessler | 39 | Wife | Stenographer | Illinois |
| 38 | Charles L. Hanless | 56 | Head | Realtor | Illinois |
| 39 | Bonnie Hanless | 22 | Daughter | Office Girl | Illinois |
| 40 | Elmer Meister | 42 | Head | Proprietor | 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)