MP
Mary Parks — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Marion-County, Indiana
Our Model Tree links this Mary Parks across the 1930 and 1940 US Censuses in Marion-County, Indiana (XGBoost, ~Confirmed) — first a daughter (b.~1929), then head of a 7-person household.
Age 11
b. ~1929
Female
Daughter
Born: Indiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Marion-County, Indiana |
| Surname | Parks |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Indianapolis |
| 1935 Residence (County) | Marion |
| Additional Details | |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Township / Ward | Indianapolis |
| Est. Birth Year | ~1929 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| William Parks | Son | — | 14 | ~1926 |
| Harriet Parks | Spouse | — | 47 | ~1893 |
| Eugene Parks | Son | — | 17 | ~1923 |
| Henry Parks | Head | — | 62 | ~1878 |
| Raymond Parks | Son | — | 16 | ~1924 |
| Mary Parks | Daughter | — | 11 | ~1929 |
| Charles Parks | Son | — | 7 | ~1933 |
Census Appearances
1930
Marion, Indiana
Daughter, age 1
Marion, Indiana · implied b. ~1929 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Parks |
| 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 |
1940
Marion-County, Indiana
Daughter, age 11
Marion-County, Indiana · implied b. ~1929 — 7 household members
| Surname | Parks |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Indianapolis |
| 1935 Residence (County) | Marion |
| 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 Parks across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Parks
Daughter · 1940 · age 11 · b. ~1929 · Indiana
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Sibling
Eugene Parks
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Parks
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Raymond Parks
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Parks
Sibling · 1940 · age 7
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-t0627-01122-00121)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Greta Karns | 18 | daughter | Clerk | Indiana |
| 2 | John Brittony | 52 | Head | Floor Man | South Carolina |
| 3 | Estella Brittony | 52 | Wife | — | Missouri |
| 4 | Dewey Beaver | 40 | Head | Testman | Indiana |
| 5 | Ethel Beaver | 40 | Wife | — | Indiana |
| 6 | Dorothy Beaver | 19 | daughter | New Worker | Indiana |
| 7 | Mildred Beaver | 15 | daughter | — | Indiana |
| 8 | Dewey Jr. Beaver | 6 | son | — | Indiana |
| 9 | Marcella Manis | 18 | lodger | Stenographer | Indiana |
| 10 | John Kienker | 31 | Head | Acting Clerk | Missouri |
| 11 | Frances Kienker | 31 | Wife | — | Connecticut |
| 12 | John Jr. Kienker | 3 | son | — | Missouri |
| 13 | Lawrence Harkness | 29 | Head | Salesman | Iowa |
| 14 | Vernetta Harkness | 31 | Wife | — | Indiana |
| 15 | Judith Harkness | 5 | daughter | — | Indiana |
| 16 | Arthur E. Durham | 31 | Head | Truck Driver | Indiana |
| 17 | Gretchel Durham | 26 | Wife | Waitress | Indiana |
| 18 | Charles F. Earl | 25 | Head | Truck Driver | Indiana |
| 19 | Eileen Earl | 22 | Wife | — | Indiana |
| 20 | Ronald Earl | 2 | son | — | Indiana |
| 21 | Cheryl Earl | 0 | daughter | — | Indiana |
| 22 | Mildred Plummer | 28 | sister | General Office Work | Indiana |
| 23 | Artie Roark | 27 | Head | Assistant Foreman | Kentucky |
| 24 | Mildred Roark | 20 | Wife | — | Indiana |
| 25 | Joan Roark | 6 | daughter | — | Indiana |
| 26 | Sandra Roark | 2 | daughter | — | Indiana |
| 27 | David Roark | 0 | son | — | Indiana |
| 28 | Henry Parks | 62 | Head | Oiler | Indiana |
| 29 | Harriet Parks | 47 | Wife | — | Indiana |
| 30 | Eugene Parks | 17 | son | New Worker | Indiana |
| 31 | Raymond Parks | 16 | son | Helper | Indiana |
| 32 | William Parks | 14 | son | — | Indiana |
| 33 | Mary Parks THIS PERSON | 11 | daughter | — | Indiana |
| 34 | Charles Parks | 7 | son | — | Indiana |
| 35 | A. M. Heeman | 72 | Head | Yard Conductor | Indiana |
| 36 | Mattie Heeman | 68 | Wife | — | Indiana |
| 37 | Frank E. Debel | 68 | Head | Machinist | Indiana |
| 38 | Mary Amer Debel | 66 | Wife | — | Irish Free State |
| 39 | Helen A. Debel | 32 | daughter | Engraver | Indiana |
| 40 | Alice S. Debel | 26 | daughter | Typist | Indiana |
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)