MK
Mary Knight — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Coles-County, Illinois
Our Model Tree links this Mary Knight across the 1920, 1930 and 1940 US Censuses in Coles-County, Illinois (XGBoost, ~Confirmed) — first a head (b.~1856), then head of a 3-person household.
Age 84
b. ~1856
Female
Head
Born: Illinois
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Coles-County, Illinois |
| Surname | Knight |
| Given Name | Mary E. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 84 |
| Marital Status | Widowed |
| Birthplace | Illinois |
| 1935 Residence (City) | Pleasant Grove Township |
| 1935 Residence (County) | Coles |
| Additional Details | |
| Industry | H |
| Class of Worker | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Pleasant Grove Township |
| Est. Birth Year | ~1856 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Vernie Knight | Daughter | — | 57 | ~1883 |
| Mary Knight | Head | — | 84 | ~1856 |
| Frank Knight | Son | — | 56 | ~1884 |
Census Appearances
1920
Coles, Illinois
Head, age 64
Coles, Illinois · implied b. ~1856 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Knight |
| Given Name | Mary E |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 64 |
| Marital Status | Widowed |
| Birthplace | Illinois |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Occupation | Farmer |
| Industry | Gen Farm |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Coles, Illinois
Head, age 74
Coles, Illinois · implied b. ~1856 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Knight |
| Given Name | Mary |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 74 |
| Marital Status | Widowed |
| Birthplace | Illinois |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Ohio |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 1500 |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Coles-County, Illinois
Head, age 84
Coles-County, Illinois · implied b. ~1856 — 3 household members
| Surname | Knight |
| Given Name | Mary E. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 84 |
| Marital Status | Widowed |
| Birthplace | Illinois |
| 1935 Residence (City) | Pleasant Grove Township |
| 1935 Residence (County) | Coles |
| Industry | H |
| Class of Worker | 0 |
| Highest Grade | No 8 |
| 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 Mary Knight across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Knight
Head · 1940 · age 84 · b. ~1856 · 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 — Coles-County, Illinois
Open full size
1940 US Federal Census — Coles-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00771-01061)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Frankie May Nichols | 55 | Wife | — | Illinois |
| 2 | Frankie Morton | 58 | Head | Farmer | Illinois |
| 3 | Ethel Morton | 50 | Wife | — | Illinois |
| 4 | Carl Morton | 22 | Son | Teacher | Illinois |
| 5 | Margaret Morton | 17 | Daughter | — | Illinois |
| 6 | Bobbie June Morton | 12 | Son | — | Illinois |
| 7 | Fred G. Beals | 57 | Head | Farmer | Illinois |
| 8 | Susie Beals | 54 | Wife | — | Illinois |
| 9 | Harry Beals | 25 | Son | Farmer | Illinois |
| 10 | Harry Meador | 57 | Hired hand | Farm Labor | Kentucky |
| 11 | Harry B. Nichols | 31 | Head | Farmer | Illinois |
| 12 | Leona Nichols | 27 | Wife | — | Illinois |
| 13 | Harry D. Nichols | 5 | Son | — | Illinois |
| 14 | Stephen Sharp | 72 | Head | Farmer | Illinois |
| 15 | Laura Sharp | 57 | Wife | — | Illinois |
| 16 | Everett Sharp | 20 | Son | Mechanic | Illinois |
| 17 | Ralph Sharp | 31 | Son | Bar Tender | Illinois |
| 18 | Norman Sharp | 15 | Son | — | Illinois |
| 19 | Hugh G. Nichols | 42 | Head | Farmer | Illinois |
| 20 | Eva B. Nichols | 43 | Wife | — | Illinois |
| 21 | Alice May Nichols | 16 | Daughter | — | Illinois |
| 22 | Martha L. Nichols | 14 | Daughter | — | Illinois |
| 23 | Oscar F. Nichols | 11 | Son | — | Illinois |
| 24 | Clarence E. Jones | 46 | Head | Farmer | Illinois |
| 25 | Bertha Jones | 38 | Wife | — | Illinois |
| 26 | Betty May Jones | 17 | Daughter | — | Illinois |
| 27 | Nathalie Jones | 16 | Daughter | — | Illinois |
| 28 | Mary E. Knight THIS PERSON | 84 | Head | — | Illinois |
| 29 | Vernie Knight | 57 | Daughter | — | Iowa |
| 30 | Frank Knight | 56 | Son | Farmer | Illinois |
| 31 | Elmer J. Gammill | 63 | Head | Farmer | Illinois |
| 32 | Flora Gammill | 61 | Wife | — | Indiana |
| 33 | Will F. Gammill | 66 | Head | Farmer | Illinois |
| 34 | Ada J. Gammill | 63 | Wife | — | Illinois |
| 35 | Oran E. Gammill | 25 | Son | Farmer | Illinois |
| 36 | Arthur B. Welch | 53 | Head | Farmer | Illinois |
| 37 | Ivalda Welch | 21 | Son | Farmer | Illinois |
| 38 | George W. Welch | 18 | Son | Com. Laborer | Illinois |
| 39 | Rosa Drum | 54 | Head | Farmer | Illinois |
| 40 | Elizabeth M. Drum | 52 | Wife | — | 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)