RC
Ruth Cox — 1940 US Census Record
Model Tree available1940 United States Federal Census · Marion-County, Indiana
Our Model Tree links this Ruth Cox across the 1920, 1930 and 1940 US Censuses in Marion-County, Indiana (XGBoost, ~Confirmed), with identified parents Edward & Hazel — first a daughter (b.~1912), then head of a 3-person household.
Age 28
b. ~1912
Female
Daughter
Born: Indiana
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Marion-County, Indiana |
| Surname | Cox |
| Given Name | Ruth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (County) | Marion |
| Additional Details | |
| Occupation | Lunch Car |
| Industry | PW |
| Class of Worker | 770 |
| Highest Grade | Hs 4 |
| 1935 Residence | 20 |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Occupation | Lunch Car |
| Township / Ward | Indianapolis |
| Est. Birth Year | ~1912 |
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 Ruth | Age | Birth yr |
|---|---|---|---|---|
| Lloyd Cox | Son | — | 41 | ~1899 |
| Hazel Lockwood | Head | — | 50 | ~1890 |
| Ruth Cox | Daughter | — | 28 | ~1912 |
Census Appearances
1920
Marion, Indiana
Daughter, age 8
Marion, Indiana · implied b. ~1912 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cox |
| Given Name | Ruth |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Occupation | none |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1930
Marion, Indiana
Daughter, age 18
Marion, Indiana · implied b. ~1912 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cox |
| Given Name | Ruth E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Occupation | Stenographer |
| Industry | Real Estate Co |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Marion-County, Indiana
Daughter, age 28
Marion-County, Indiana · implied b. ~1912 — 3 household members
| Surname | Cox |
| Given Name | Ruth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Indiana |
| 1935 Residence (County) | Marion |
| Occupation | Lunch Car |
| Industry | PW |
| Class of Worker | 770 |
| Highest Grade | Hs 4 |
| 1935 Residence | 20 |
| 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 Ruth Cox across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Edward Cox (~0.92 confidence) and mother Hazel Lockwood (~0.92 confidence) and mother Mary Cox (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Edward Cox
b. ~1879
Source father
● Household
· direct · ~0.92
Mother
Hazel Lockwood
b. ~1890
Source mother
● Household
· direct · ~0.92
Mother
Mary Cox
b. ~1889
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Ruth Cox
Daughter · 1940 · age 28 · b. ~1912 · Indiana
★ You are viewing this record
Sibling
Lloyd Cox
Sibling · 1940 · age 41
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
40 people indexed on this census page (nara:1940:m-t0627-01128-00400)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Beatrice Hammons | 3 | — | — | Indiana |
| 2 | Irma Thompson | 64 | Head | City Community House | Indiana |
| 3 | Clarence Thompson | 45 | Son | Factory (Car) | Indiana |
| 4 | Charles N. Skinner | 28 | Lodger | Paramount Opt. Co. | Indiana |
| 5 | Virginia Skinner | 25 | Daughter | — | Indiana |
| 6 | Dennis L. Skinner | 1 | Grandson | — | Indiana |
| 7 | Phyllis J. Skinner | 1 | Great-Granddaughter | — | Indiana |
| 8 | John Vandiver | 47 | Head | Government Project | Indiana |
| 9 | Charlotte Vandiver | 48 | Wife | — | Illinois |
| 10 | Robert Vandiver | 13 | Son | — | Indiana |
| 11 | Virgil Graham | 12 | Lodger | — | Indiana |
| 12 | Richard Graham | 11 | Lodger | — | Indiana |
| 13 | Earl Hibbert | 46 | Head | Private Work | Indiana |
| 14 | Dora Hibbert | 16 | Daughter | — | Indiana |
| 15 | William Hibbert | 14 | Son | — | Indiana |
| 16 | Dorothy Hibbert | 12 | Daughter | — | Indiana |
| 17 | Lula M. Mcnulty | 74 | Head | — | Kentucky |
| 18 | Freda Block | 42 | Lodger | — | Indiana |
| 19 | Martha P. Long | 74 | Head | 0 | Germany |
| 20 | Hattie Norris | 46 | Head | Pw | England |
| 21 | Joseph Norris | 25 | Son | Hose Company | Kentucky |
| 22 | Verner Carmichael | 18 | Lodger | Oliver Chester | Kentucky |
| 23 | Lodger Turner | None | M | Pw | — |
| 24 | Clarence Eberhardt | 28 | Lodger | Drive-It-Yourself | Indiana |
| 25 | James R. Allobitt | 67 | Head | Nordyke-Marmon | Indiana |
| 26 | Millie Allobitt | 71 | Wife | — | Indiana |
| 27 | Sophie Werner | 82 | Head | — | Ohio |
| 28 | Hazel Lockwood | 50 | Head | Lunch Car | Indiana |
| 29 | Lloyd Cox | 41 | Son | Belmont Electric | Iowa |
| 30 | Ruth Cox THIS PERSON | 28 | Daughter | Lunch Car | Indiana |
| 31 | Richard Sleener | 21 | Head | Furnace | Indiana |
| 32 | Helen Sleener | 22 | Wife | — | Indiana |
| 33 | Glen F. Mcclunney | 35 | Head | Ill. Trucking | Indiana |
| 34 | Margaret Mcclunney | 34 | Wife | — | South Dakota |
| 35 | Margaret Mcclunney | 8 | Daughter | — | Minnesota |
| 36 | William Holder | 43 | Head | 45 | Indiana |
| 37 | Gladys Holder | 39 | Wife | 60 | Indiana |
| 38 | James Holder | 20 | Son | 38 | Indiana |
| 39 | Eugene Holder | 19 | Son | 40 | Indiana |
| 40 | Rudolph Holder | 17 | Son | — | Indiana |
Related Census Records
Pedigree Summary
Ruth + 1 sibling
Gen 1 · 3 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)