MC
Mary Conrad — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Madison-County, Indiana
Our Model Tree links this Mary Conrad across the 1930 and 1940 US Censuses in Madison-County, Indiana (XGBoost, ~Confirmed) — first a daughter (b.~1922), then head of a 10-person household.
Age 18
b. ~1922
Female
Daughter
Born: Indiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Madison-County, Indiana |
| Surname | Conrad |
| Given Name | Mary Anna |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (County) | Madison |
| Additional Details | |
| Highest Grade | Hs 3 |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Township / Ward | Anderson |
| Est. Birth Year | ~1922 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Robert Conrad | Son | — | 10 | ~1930 |
| Verne Conrad | Spouse | — | 45 | ~1895 |
| Charles Conrad | Son | — | 16 | ~1924 |
| Loris Conrad | Son | — | 22 | ~1918 |
| Calvin Conrad | Son | — | 6 | ~1934 |
| William Conrad | Son | — | 12 | ~1928 |
| Mary Conrad | Daughter | — | 18 | ~1922 |
| Don Conrad | Son | — | 4 | ~1936 |
| George Conrad | Son | — | 20 | ~1920 |
| Harold Conrad | Head | — | 47 | ~1893 |
Census Appearances
1930
Madison, Indiana
Daughter, age 7
Madison, Indiana · implied b. ~1923 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Conrad |
| Given Name | Mary A |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Indiana |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Indiana |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
1940
Madison-County, Indiana
Daughter, age 18
Madison-County, Indiana · implied b. ~1922 — 10 household members
| Surname | Conrad |
| Given Name | Mary Anna |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (County) | Madison |
| Highest Grade | Hs 3 |
| 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 Conrad across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Conrad
Daughter · 1940 · age 18 · b. ~1922 · Indiana
★ You are viewing this record
Sibling
Don Conrad
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Conrad
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Loris Conrad
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Conrad
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Calvin Conrad
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Conrad
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Conrad
Sibling · 1940 · age 20
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 — Madison-County, Indiana
Open full size
1940 US Federal Census — Madison-County, Indiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01073-00241)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Judith Gentry | 2 | Daughter | — | Indiana |
| 42 | Lecloly Williamson | 60 | Mother | — | Indiana |
| 43 | Ward Hartwell | 33 | Head | City School Office Attending | Indiana |
| 44 | Louise Hartwell | 34 | Wife | — | Indiana |
| 45 | Gretchen Hartwell | 2 | Daughter | — | Indiana |
| 46 | Chas G Cochran | 60 | Head | Punch Per Op | Illinois |
| 47 | Leta Cochran | 56 | Wife | — | Indiana |
| 48 | Ezra Sandfur | 63 | Head | Farmer | Pennsylvania |
| 49 | Lola M Sandfur | 54 | Wife | — | Indiana |
| 50 | Ray Sandfur | 25 | Son | Production | Indiana |
| 51 | Asa Sandfur | 23 | Son | Truck Driver | Indiana |
| 52 | Ruth Sandfur | 20 | Daughter | — | Indiana |
| 53 | Ella R Bowyer | 60 | Head | — | Indiana |
| 54 | Annetta Bowyer | 37 | Daughter | School Teacher | Indiana |
| 55 | Harold C Conrad | 47 | Head | Farmer | Indiana |
| 56 | Verne L Conrad | 45 | Wife | — | Indiana |
| 57 | Loris H Conrad | 22 | Son | Processor | Indiana |
| 58 | George N Conrad | 20 | Son | Assembly | Indiana |
| 59 | Mary Anna Conrad THIS PERSON | 18 | Daughter | — | Indiana |
| 60 | Charles E Conrad | 16 | Son | — | Indiana |
| 61 | William L Conrad | 12 | Son | — | Indiana |
| 62 | Robert M Conrad | 10 | Son | — | Indiana |
| 63 | Calvin Glen Conrad | 6 | Son | — | Indiana |
| 64 | Don L Conrad | 4 | Son | — | Indiana |
| 65 | Lawrence Mcwango | 41 | Head | Bailer | Indiana |
| 66 | Lula Mcwango | 40 | Wife | — | Kentucky |
| 67 | Melvin Mcwango | 18 | Son | Farm Hand | Indiana |
| 68 | Frances Mcwango | 13 | Daughter | — | Indiana |
| 69 | Marston Mcwango | 8 | Son | — | Indiana |
| 70 | Arnold Mcwango | 6 | Son | — | Indiana |
| 71 | Gilbert Mcwango | 4 | Son | — | Indiana |
| 72 | Dorville Mcwango | 3 | Son | — | Indiana |
| 73 | Joseph Ed Gavin | 32 | Head | Die Setter | Indiana |
| 74 | Margaret Gavin | 25 | Wife | — | Indiana |
| 75 | Mary Gavin | 2 | Daughter | — | Indiana |
| 76 | David Gavin | 1 | Son | — | Indiana |
| 77 | Wm E Keffer | 58 | Head | Farmer | Indiana |
| 78 | Edna M Keffer | 48 | Wife | — | Indiana |
| 79 | William F Gosling | 40 | Head | Labor | Indiana |
| 80 | Clara Gosling | 36 | Wife | — | Indiana |
Related Census Records
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)