MK
Mary King — 1940 US Census Record
Model Tree available1940 United States Federal Census · Marion-County, Indiana
Our Model Tree links this Mary King across the 1920, 1930 and 1940 US Censuses in Marion-County, Indiana (XGBoost, ~Confirmed), with identified parents M & James — first a daughter (b.~1917), then head of a 4-person household.
Age 23
b. ~1917
Female
Daughter
Born: Indiana
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Marion-County, Indiana |
| Surname | King |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | Indianapolis City |
| 1935 Residence (County) | Marion |
| Additional Details | |
| Occupation | new worker |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Occupation | New Worker |
| Township / Ward | Indianapolis City |
| Est. Birth Year | ~1917 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary King | Daughter | — | 23 | ~1917 |
| Jesse White | Head | — | 54 | ~1886 |
| John White | Son | — | 18 | ~1922 |
| Lottie White | Spouse | — | 43 | ~1897 |
Census Appearances
1920
Marion, Indiana
Daughter, age 1
Marion, Indiana · implied b. ~1919 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | King |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Occupation | none |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Marion, Indiana
Daughter, age 12
Marion, Indiana · implied b. ~1918 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | King |
| Given Name | Mary H. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Marion-County, Indiana
Daughter, age 23
Marion-County, Indiana · implied b. ~1917 — 4 household members
| Surname | King |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (City) | Indianapolis City |
| 1935 Residence (County) | Marion |
| Occupation | new worker |
| Highest Grade | No 4 |
| 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 Mary King across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father M King (~0.92 confidence) and father James King (~0.92 confidence) and mother Bertha King (~0.92 confidence) and father Jesse White (~0.92 confidence) and mother Lottie White (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
M King
b. ~1881
Source father
● Household
· direct · ~0.92
Father
James King
b. ~1893
Source father
● Household
· direct · ~0.92
Mother
Bertha King
b. ~1885
Source mother
● Household
· direct · ~0.92
Father
Jesse White
b. ~1886
Source father
● Household
· direct · ~0.92
Mother
Lottie White
b. ~1897
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary King
Daughter · 1940 · age 23 · b. ~1917 · Indiana
★ You are viewing this record
Sibling
John White
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Marion-County, Indiana
Open full size
1940 US Federal Census — Marion-County, Indiana
Page Contents
12 people indexed on this census page (nara:1940:m-t0627-01132-00411)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mathew Kopp | 53 | Head | Laborer | Ohio |
| 2 | Mattie E. Kopp | 49 | Wife | — | Kentucky |
| 3 | George William Kopp | 15 | Son | — | Indiana |
| 4 | Jesse Mathew Kopp | 13 | Son | — | Indiana |
| 5 | Jesse J. White | 54 | Head | Janitor | Kentucky |
| 6 | Lottie White | 43 | Wife | — | Kentucky |
| 7 | John Q. White | 18 | Son | — | Indiana |
| 8 | Mary King THIS PERSON | 23 | Daughter | New Worker | Indiana |
| 9 | John O. Noble | 27 | Head | Service Man | Kansas |
| 10 | Beatrice O. Noble | 27 | Wife | — | Indiana |
| 11 | Harold A. Noble | 9 | Son | — | Indiana |
| 12 | Rita May Noble | 5 | Daughter | — | Indiana |
Pedigree Summary
Mary + 1 sibling
Gen 1 · 5 parents
~0.92
Max depth 4 (1900–1950 window)
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)