WK
William Kirk — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Montgomery-County, Illinois
Our Model Tree links this William Kirk across the 1920, 1930 and 1940 US Censuses in Montgomery-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1862), then head of a 4-person household.
Age 78
b. ~1862
Male
Head
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Montgomery-County, Illinois |
| Surname | Kirk |
| Given Name | William W. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 78 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Pitman Twp |
| 1935 Residence (County) | Montgomery |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Pitman Twp |
| Est. Birth Year | ~1862 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| William Kirk | Son | — | 39 | ~1901 |
| William Kirk | Head | — | 78 | ~1862 |
| Hester Kirk | Spouse | — | 77 | ~1863 |
| Hester Kirk | Daughter | — | 35 | ~1905 |
Census Appearances
1920
Montgomery, Illinois
Head, age 57
Montgomery, Illinois · implied b. ~1863 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kirk |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | Illinois |
| Father's Birthplace | England |
| Mother's Birthplace | Kentucky |
| Occupation | Farmer |
| Industry | Genl Farm |
| Class of Worker | Em |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Montgomery, Illinois
Head, age 68
Montgomery, Illinois · implied b. ~1862 — 16 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | KIRK |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 68 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 30 |
| Father's Birthplace | England |
| Mother's Birthplace | Kentucky |
| Occupation | Farmer |
| Industry | Gen Farm |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Montgomery-County, Illinois
Head, age 78
Montgomery-County, Illinois · implied b. ~1862 — 4 household members
| Surname | Kirk |
| Given Name | William W. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 78 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Pitman Twp |
| 1935 Residence (County) | Montgomery |
| Income (1939) | 0 |
| Highest Grade | No 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 William Kirk across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
William Kirk
Head · 1940 · age 78 · b. ~1862 · 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 — Montgomery-County, Illinois
Open full size
1940 US Federal Census — Montgomery-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00860-00836)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Ora O. Specht | 47 | Head | Farmer | Illinois |
| 2 | Fay F. Specht | 47 | Wife | Housekeeper | Illinois |
| 3 | Charles E. Fricke | 75 | Father-in-law | — | Illinois |
| 4 | Louis H. Klaus | 36 | Head | Farmer | Illinois |
| 5 | Gladys M. Klaus | 27 | Wife | — | Illinois |
| 6 | Wanda H. Klaus | 5 | Daughter | — | Illinois |
| 7 | Shirley M. Klaus | 4 | Daughter | — | Illinois |
| 8 | James R. Klaus | 2 | Son | — | Illinois |
| 9 | William W. Kirk THIS PERSON | 78 | Head | — | Illinois |
| 10 | Hester E. Kirk | 77 | Wife | — | Virginia |
| 11 | William L. Kirk | 39 | Son | Farmer | Illinois |
| 12 | Hester Ann Kirk | 35 | Daughter | — | Illinois |
| 13 | John Kirk | 70 | Head | Farmer | Illinois |
| 14 | Mary Kirk | 68 | Wife | — | Illinois |
| 15 | Frank Kirk | 24 | Son | Farmer | Illinois |
| 16 | Levi C. Bethard | 49 | Head | Farmer | Illinois |
| 17 | Mabel G. Bethard | 47 | Wife | — | Illinois |
| 18 | Chris C. Bethard | 24 | Son | — | Illinois |
| 19 | Thral M. Bethard | 23 | Son | Mechanic | Illinois |
| 20 | Ralph W. Martin | 31 | Head | Farmer | Illinois |
| 21 | Velma M. Martin | 25 | Wife | — | Illinois |
| 22 | Ralph R. Martin | 4 | Son | — | Illinois |
| 23 | Wilton L. Martin | 2 | Son | — | Illinois |
| 24 | Henry Martin | 66 | Head | — | Illinois |
| 25 | Alma Martin | 44 | Wife | — | Germany |
| 26 | Alvida Martin | 12 | Daughter | — | Illinois |
| 27 | Henry W. Martin | 10 | Son | — | Illinois |
| 28 | Lena Martin | 64 | Head | Farmer | Illinois |
| 29 | Harry C. Lindly | 36 | Head | Farm Hand | Illinois |
| 30 | Yanny B. Lindly | 36 | Wife | — | Illinois |
| 31 | Dolores M. Lindly | 7 | Daughter | — | Illinois |
| 32 | Virgil L. Lindly | 5 | Son | — | Illinois |
| 33 | Eulan E. Brawner | 30 | Head | Farm Hand | Illinois |
| 34 | Frida P. Brawner | 24 | Wife | — | Illinois |
| 35 | Duallon S. Brawner | 4 | Son | — | Illinois |
| 36 | Thomas M. Brawner | 3 | Son | — | Illinois |
| 37 | Eleanor Brawner | 2 | Daughter | — | Illinois |
| 38 | James V. Mcanully | 29 | Head | Farm Manager | Illinois |
| 39 | Janice W. Mcanully | 24 | Wife | — | Illinois |
| 40 | Joseph L. Mcnamara | 33 | Head | — | Illinois |
Related Census Records
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)