MC
Mary Case — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Delaware-County, Indiana
Our Model Tree links this Mary Case across the 1930 and 1940 US Censuses in Delaware-County, Indiana (XGBoost, ~Confirmed) — first a daughter (b.~1928), then head of a 6-person household.
Age 12
b. ~1928
Female
Daughter
Born: Indiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Delaware-County, Indiana |
| Surname | Case |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Muncie |
| 1935 Residence (County) | Delaware |
| Additional Details | |
| Highest Grade | No 6 |
| 1935 Residence | Same house |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Township / Ward | Muncie |
| Est. Birth Year | ~1928 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Lee Case | Head | — | 55 | ~1885 |
| Helen Richardson | Daughter | — | 21 | ~1919 |
| Dorothy Case | Daughter | — | 15 | ~1925 |
| Mary Case | Daughter | — | 12 | ~1928 |
| Tillie Case | Spouse | — | 50 | ~1890 |
| Wallace Case | Son | — | 16 | ~1924 |
Census Appearances
1930
Delaware, Indiana
Daughter, age 2
Delaware, Indiana · implied b. ~1928 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Case |
| Given Name | Mary M |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Delaware-County, Indiana
Daughter, age 12
Delaware-County, Indiana · implied b. ~1928 — 6 household members
| Surname | Case |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Muncie |
| 1935 Residence (County) | Delaware |
| Highest Grade | No 6 |
| 1935 Residence | Same house |
| 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 Case across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Case
Daughter · 1940 · age 12 · b. ~1928 · Indiana
★ You are viewing this record
Sibling
Wallace Case
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Richardson
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Case
Sibling · 1940 · age 15
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 — Delaware-County, Indiana
Open full size
1940 US Federal Census — Delaware-County, Indiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01037-00133)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Kenneth Arbogast | 5 | Head | — | West Virginia |
| 42 | Joyce Arbogast | 1 | Daughter | — | Indiana |
| 43 | Robert Wilson | 19 | Head | Mechanic | Indiana |
| 44 | Alice Russell | 24 | Cousin | — | Indiana |
| 45 | Newlin Coffin | 38 | Head | Draftsman | Indiana |
| 46 | Dorotha Coffin | 31 | Wife | — | Indiana |
| 47 | James N. Coffin | 9 | Son | — | Indiana |
| 48 | Mary M. Coffin | 6 | Daughter | — | Indiana |
| 49 | Charles Parsley | 73 | Head | — | Indiana |
| 50 | Hattie R. Parsley | 64 | Wife | — | Indiana |
| 51 | Ernest E. Gaylor | 33 | Head | Grinder | Indiana |
| 52 | Constance Gaylor | 36 | Wife | — | Indiana |
| 53 | Betty Mae Gaylor | 9 | Daughter | — | Indiana |
| 54 | Dickie Jr. Gaylor | 3 | Daughter | — | Indiana |
| 55 | Charles Nelson | 54 | Head | Laborer | Indiana |
| 56 | Lottie Nelson | 50 | Wife | — | Ohio |
| 57 | Margaret E. Nelson | 13 | Daughter | — | Indiana |
| 58 | Lee Case | 55 | Head | Laborer | Indiana |
| 59 | Tillie Case | 50 | Wife | — | Indiana |
| 60 | Wallace Case | 16 | Son | — | Indiana |
| 61 | Dorothy Case | 15 | Daughter | — | Indiana |
| 62 | Mary Case THIS PERSON | 12 | Daughter | — | Indiana |
| 63 | Helen Richardson | 21 | Daughter | Waitress | Indiana |
| 64 | Lester Bryant | 24 | Head | Laborer | Kentucky |
| 65 | Marie Bryant | 19 | Wife | — | Indiana |
| 66 | Beverly Sue Bryant | 2 | Daughter | — | Indiana |
| 67 | Merry Diane Bryant | 1 | Daughter | — | Indiana |
| 68 | Obed H. Pickerd | 54 | Head | Laborer | Indiana |
| 69 | Elsie Pickerd | 46 | Wife | — | Kentucky |
| 70 | James Dalton | 30 | Lodger | Laborer | Indiana |
| 71 | Phelps Boles | 32 | Lodger | Final Inspector | Indiana |
| 72 | Delores Nelson | 9 | Lodger | — | Indiana |
| 73 | Carl L. Hale | 46 | Head | Machine Repair | Ohio |
| 74 | Hazel Mae Hale | 43 | Wife | — | Indiana |
| 75 | Ernestine C. Hale | 22 | Daughter | Gatherer | Indiana |
| 76 | Dorothy E. Hale | 15 | Daughter | — | Indiana |
| 77 | Francis E. Hale | 13 | Son | — | Indiana |
| 78 | Donald Hiatt | 31 | Head | Laborer | Indiana |
| 79 | Irene Hiatt | 29 | Wife | — | Indiana |
| 80 | Marcia Lee Hiatt | 5 | Daughter | — | 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)