MK
Martha King — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Shelby-County, Illinois
Our Model Tree links this Martha King across the 1900, 1910, 1920, 1930 and 1940 US Censuses in Shelby-County, Illinois (XGBoost, ~Confirmed) — first a spouse (b.~1865), then head of a 5-person household.
Age 75
b. ~1865
Female
Spouse
Born: Illinois
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Shelby-County, Illinois |
| Surname | King |
| Given Name | Martha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 75 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Eldorado City |
| 1935 Residence (County) | Saline |
| Additional Details | |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Township / Ward | Eldorado City |
| Est. Birth Year | ~1865 |
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 Martha | Age | Birth yr |
|---|---|---|---|---|
| Thelma King | Other | — | 7 | ~1933 |
| Martha King | Spouse | — | 75 | ~1865 |
| Felix King | Head | — | 80 | ~1860 |
| Elmer King | Other | — | 9 | ~1931 |
| Johnny King | Son | — | 30 | ~1910 |
Census Appearances
1900
Shelby, Illinois
Spouse, age 33
Shelby, Illinois · implied b. ~1867 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | King |
| Given Name | Martha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Illinois |
| Birth Month | July |
| Birth Year | 1867 |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Can Read | No |
| Can Write | No |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1910
Shelby, Illinois
Spouse, age 45
Shelby, Illinois · implied b. ~1865 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | King |
| Given Name | Martha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Illinois |
| Years Married | 14 |
| Children Born | 5 |
| Children Living | 4 |
| 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 |
1920
Shelby, Illinois
Spouse, age 54
Shelby, Illinois · implied b. ~1866 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | King |
| Given Name | Martha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 54 |
| Marital Status | Married |
| Birthplace | Illinois |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Shelby, Illinois
Spouse, age 65
Shelby, Illinois · implied b. ~1865 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | King |
| Given Name | Martha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 65 |
| Marital Status | Married |
| Birthplace | Illinois |
| Age at First Marriage | 17 |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Illinois |
| Occupation | Laundress |
| Industry | At Home |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Shelby-County, Illinois
Spouse, age 75
Shelby-County, Illinois · implied b. ~1865 — 5 household members
| Surname | King |
| Given Name | Martha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 75 |
| Marital Status | Married |
| Birthplace | Illinois |
| 1935 Residence (City) | Eldorado City |
| 1935 Residence (County) | Saline |
| Highest Grade | H 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 Martha King across 5 US Census years (1900, 1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Martha King
Spouse · 1940 · age 75 · b. ~1865 · 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 — Shelby-County, Illinois
Open full size
1940 US Federal Census — Shelby-County, Illinois
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-00890-00563)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Walter Hubbard | 19 | Head | Packer | Texas |
| 42 | Virginia Lee Hubbard | 1 | Daughter | — | Illinois |
| 43 | Burton Griffith | 31 | Head | Poisoning | Illinois |
| 44 | Lola Griffith | 36 | Wife | — | Oklahoma |
| 45 | Irene Griffith | 7 | Daughter | — | Illinois |
| 46 | Marilyn Griffith | 4 | Daughter | — | Illinois |
| 47 | Ronald Griffith | 1 | Son | — | Illinois |
| 48 | Claire Lally | 46 | Mother in law | — | Illinois |
| 49 | Helton Louis | 69 | Head | — | Illinois |
| 50 | George Fredrickson | 60 | Head | Telegrapher | Illinois |
| 51 | Isabelle Fredrickson | 57 | Wife | — | Indiana |
| 52 | Cora Fredrickson | 37 | Daughter | Stenographer | Indiana |
| 53 | — | None | — | — | — |
| 54 | Louisa C Derrer | 78 | Head | — | Illinois |
| 55 | Morris Mclaughin | 23 | Boarder | Truck Driver | Illinois |
| 56 | Hazel Warner | 27 | Lodger | Presser | Illinois |
| 57 | Alice Maebell Warner | 4 | Lodger | — | Illinois |
| 58 | Sina Clora Pruitt | 50 | Head | Pressing Dept | Illinois |
| 59 | Addie M Pruitt | 48 | Wife | — | Illinois |
| 60 | Clarence Pruitt | 22 | Son | Mechanic | Illinois |
| 61 | Enos Pruitt | 20 | Son | Enrollee | Missouri |
| 62 | Esther Pruitt | 9 | Daughter | — | Illinois |
| 63 | Jason Royal | 56 | Head | Tool Maker | Missouri |
| 64 | Julia D Royal | 49 | Wife | — | Missouri |
| 65 | Bessie Benson | 50 | Head | Janitor | Illinois |
| 66 | Billie Benson | 12 | Son | — | Illinois |
| 67 | Bubba Lowry | 32 | Boarder | — | Illinois |
| 68 | Cora Vaughn | 77 | Head | — | Illinois |
| 69 | Guy Tucker | 45 | Head | Laborer | Illinois |
| 70 | Fredricka Tucker | 45 | Wife | Battery Presser | Illinois |
| 71 | Lula Mae Tucker | 6 | Daughter | — | Illinois |
| 72 | Billie Tucker | 8 | Son | — | Illinois |
| 73 | Ronnie Tucker | 10 | Son | — | Illinois |
| 74 | Marilyn Tucker | 17 | Daughter | Pressing Pan | Illinois |
| 75 | Felix King | 80 | Head | — | Illinois |
| 76 | Martha King THIS PERSON | 75 | Wife | — | Illinois |
| 77 | Elmer King | 9 | Boarder | — | Illinois |
| 78 | Thelma King | 7 | Boarder | — | Illinois |
| 79 | Johnny King | 30 | Son | Laborer | Illinois |
| 80 | King | 70 | Sister in law | — | 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)