WF
William Foster — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Warren-County, Illinois
Our Model Tree links this William Foster across the 1900, 1910, 1920, 1930 and 1940 US Censuses in Warren-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1860), then head of a 2-person household.
Age 80
b. ~1860
Male
Head
Born: Indiana
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Warren-County, Illinois |
| Surname | Foster |
| Given Name | William C. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 80 |
| Marital Status | Widowed |
| Birthplace | Indiana |
| 1935 Residence (City) | Monmouth |
| 1935 Residence (County) | Warren |
| Additional Details | |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Township / Ward | Monmouth |
| Est. Birth Year | ~1860 |
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.
2 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Edna Foster | Daughter | — | 55 | ~1885 |
| William Foster | Head | — | 80 | ~1860 |
Census Appearances
1900
Warren, Illinois
Head, age 42
Warren, Illinois · implied b. ~1858 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Foster |
| Given Name | William G |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Indiana |
| Birth Month | Aug |
| Birth Year | 1858 |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | Ohio |
| Occupation | Day Laborer |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1910
Warren, Illinois
Head, age 50
Warren, Illinois · implied b. ~1860 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Foster |
| Given Name | William P. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 50 |
| Marital Status | Married |
| Birthplace | Indiana |
| Years Married | 28 |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | Ohio |
| Occupation | Driver |
| Industry | Coal wagon |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1920
Warren, Illinois
Head, age 60
Warren, Illinois · implied b. ~1860 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Foster |
| Given Name | William P |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 60 |
| Marital Status | Married |
| Birthplace | Indiana |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | Ohio |
| Occupation | foreman |
| Industry | lumber co |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | F |
| Birth State | Indiana |
| Birth Country | United States |
| Year of Naturalization | O |
| Birthplace (normalized) | indiana |
1930
Warren, Illinois
Head, age 70
Warren, Illinois · implied b. ~1860 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Foster |
| Given Name | William P. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 70 |
| Marital Status | Widowed |
| Birthplace | Indiana |
| Age at First Marriage | 21 |
| Father's Birthplace | South Carolina |
| Mother's Birthplace | Ohio |
| Occupation | Superintendent |
| Industry | Lumber Yard |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 3800 |
| Radio Set | R |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Warren-County, Illinois
Head, age 80
Warren-County, Illinois · implied b. ~1860 — 2 household members
| Surname | Foster |
| Given Name | William C. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 80 |
| Marital Status | Widowed |
| Birthplace | Indiana |
| 1935 Residence (City) | Monmouth |
| 1935 Residence (County) | Warren |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
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 William Foster across 5 US Census years (1900, 1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
William Foster
Head · 1940 · age 80 · b. ~1860 · Illinois
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Warren-County, Illinois
Open full size
1940 US Federal Census — Warren-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00901-00381)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Minnie Loveless | 35 | Wife | Housework | Illinois |
| 2 | Charles Loveless | 17 | Son | Employed During Year 1939 | Illinois |
| 3 | Robert E. Jr. Loveless | 15 | Son | High School Student At Present | Illinois |
| 4 | John Loveless | 10 | Son | — | Illinois |
| 5 | Harriet Parsons | 52 | Head | Stationery Boiler | Illinois |
| 6 | Ada Parsons | 31 | Wife | No No No No H | Illinois |
| 7 | Joan Parsons | 4 | Daughter | — | Illinois |
| 8 | Ella Mae Parsons | 2 | Daughter | — | Illinois |
| 9 | Belva Parsons | 1 | Daughter | — | Illinois |
| 10 | John A. Brown | 24 | Head | Caretaker | Illinois |
| 11 | Doris L. Brown | 26 | Wife | — | Illinois |
| 12 | Melba Jean Brown | 9 | Daughter | — | Illinois |
| 13 | Fred C. Foster | 57 | Head | Restaurant Owner | Illinois |
| 14 | Ora Foster | 57 | Wife | Pastry Cook | Illinois |
| 15 | Fred Jr. Foster | 22 | Son | Chem. Ass'T | Illinois |
| 16 | John Taylor | 73 | Head | — | Missouri |
| 17 | Lily Taylor | 64 | Wife | Housework | Missouri |
| 18 | Kenneth Ross | 20 | Grandson | — | Missouri |
| 19 | Edith Runyon | 47 | Head | Cook | Illinois |
| 20 | Anna Straight | 50 | Head | Housework | England |
| 21 | Delmar Straight | 21 | Son | Grocery Clerk | Iowa |
| 22 | Cora Francis | 63 | Head | — | Illinois |
| 23 | Minnie Payne | 78 | Head | — | Tennessee |
| 24 | Mary Payne | 48 | Daughter | Maid | Illinois |
| 25 | S. B. Hickman | 56 | Head | — | Illinois |
| 26 | Henry Montgomery | 60 | Head | — | West Virginia |
| 27 | Ella Montgomery | 59 | Wife | Housework | Virginia |
| 28 | La Verne Montgomery | 19 | Daughter | Typing | Illinois |
| 29 | Dean Parrish | 21 | Head | Factory Helper | Illinois |
| 30 | Marjorie Parrish | 16 | Wife | — | Illinois |
| 31 | William C. Foster THIS PERSON | 80 | Head | — | Indiana |
| 32 | Edna Foster | 55 | Daughter | — | Illinois |
| 33 | Chas. Erickson | 78 | Head | — | Sweden |
| 34 | Hilma Erickson | 67 | Wife | — | Sweden |
| 35 | Dick Burket | 30 | Head | Mechanic | Illinois |
| 36 | Celia Burket | 25 | Wife | — | Illinois |
| 37 | Ellen Farley | 74 | Head | — | Ireland |
| 38 | Margaret Farley | 46 | Daughter | Hotel Maid | Illinois |
| 39 | Elizabeth Farley | 43 | Daughter | — | Illinois |
| 40 | Effie L. Merrell | 73 | Head | — | Missouri |
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)