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Mary Monroe — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Delaware-County, Indiana
Our Model Tree links this Mary Monroe across the 1930 and 1940 US Censuses in Delaware-County, Indiana (XGBoost, ~Confirmed) — first a daughter (b.~1925), then head of a 8-person household.
Age 15
b. ~1925
Female
Daughter
Born: Indiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Delaware-County, Indiana |
| Surname | Monroe |
| Given Name | Mary Belle |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Perry Township |
| 1935 Residence (County) | Delaware |
| Additional Details | |
| Highest Grade | Hs 1 |
| 1935 Residence | Same place |
| Birth State | Indiana |
| Birth Country | United States |
| Birthplace (normalized) | indiana |
| Township / Ward | Perry Township |
| Est. Birth Year | ~1925 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Monroe | Daughter | — | 15 | ~1925 |
| Alice Monroe | Daughter | — | 7 | ~1933 |
| Frank Monroe | Head | — | 52 | ~1888 |
| Eugene Monroe | Son | — | 23 | ~1917 |
| Emily Monroe | Daughter | — | 10 | ~1930 |
| Mabel Monroe | Spouse | — | 44 | ~1896 |
| Sandra Monroe | Daughter | — | 1 | ~1939 |
| Billy Monroe | Son | — | 13 | ~1927 |
Census Appearances
1930
Randolph, Indiana
Daughter, age 5
Randolph, Indiana · implied b. ~1925 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Monroe |
| Given Name | Mary J. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| 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
Delaware-County, Indiana
Daughter, age 15
Delaware-County, Indiana · implied b. ~1925 — 8 household members
| Surname | Monroe |
| Given Name | Mary Belle |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Indiana |
| 1935 Residence (City) | Perry Township |
| 1935 Residence (County) | Delaware |
| Highest Grade | Hs 1 |
| 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 Monroe across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Monroe
Daughter · 1940 · age 15 · b. ~1925 · Indiana
★ You are viewing this record
Sibling
Sandra Monroe
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eugene Monroe
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Billy Monroe
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Monroe
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Emily Monroe
Sibling · 1940 · age 10
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-t0627-01038-00883)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Edward R. Manley | 68 | Brother | Carpenter | Indiana |
| 42 | Elvin W. Black | 58 | Head | Farmer | Indiana |
| 43 | Eva S. Black | 53 | Wife | — | Indiana |
| 44 | Harry Whitney | 69 | Head | Farmer | Illinois |
| 45 | Hattie Whitney | 60 | Wife | — | Indiana |
| 46 | Frank W. Monroe | 52 | Head | Farmer | Indiana |
| 47 | Mabel Monroe | 44 | Wife | — | Indiana |
| 48 | Eugene A. Monroe | 23 | Son | Farm Laborer | Indiana |
| 49 | Mary Belle Monroe THIS PERSON | 15 | Daughter | — | Indiana |
| 50 | Billy Monroe | 13 | Son | — | Indiana |
| 51 | Emily Ann Monroe | 10 | Daughter | — | Indiana |
| 52 | Alice E. Monroe | 7 | Daughter | — | Indiana |
| 53 | Sandra S. Monroe | 1 | Daughter | — | Indiana |
| 54 | Loring Levera | 37 | Head | Machinist | Indiana |
| 55 | Le Vera Levera | 31 | Wife | — | Indiana |
| 56 | Gene Levera | 12 | Son | — | Indiana |
| 57 | Robert Levera | 2 | Son | — | Indiana |
| 58 | Frank Jefferson | 56 | Head | Salesman | Indiana |
| 59 | Addie Jefferson | 59 | Wife | — | Indiana |
| 60 | Elizabeth G. Meeks | 53 | Head | — | Indiana |
| 61 | Martin B. Meeks | 25 | Son | Farm Laborer | Indiana |
| 62 | Carol A. Meeks | 22 | Daughter-in-law | — | Indiana |
| 63 | Lester Hahn | 34 | Head | Machinist | Ohio |
| 64 | Eleanor Hahn | 28 | Wife | — | Indiana |
| 65 | Richard L. Hahn | 10 | Son | — | Indiana |
| 66 | Collin Madonna Hahn | 17 | Sister-in-law | — | Indiana |
| 67 | John H. Johnson | 40 | Head | Supervisor | Indiana |
| 68 | Ondone Johnson | 35 | Wife | — | Indiana |
| 69 | John Edwin Johnson | 5 | Son | — | Indiana |
| 70 | Ella R. Doughty | 68 | Head | — | Indiana |
| 71 | Malcolm E. Doughty | 37 | Son | Music Teacher | Indiana |
| 72 | Katie Helm | 55 | Head | — | Indiana |
| 73 | Loring Thornburg | 73 | Head | Farmer | Indiana |
| 74 | Lena Thornburg | 64 | Wife | — | Indiana |
| 75 | Emory De Forest | 40 | Head | Farmer | Pennsylvania |
| 76 | Lora De Forest | 37 | Wife | — | Indiana |
| 77 | Ernest De Forest | 15 | Son | — | Indiana |
| 78 | Marguerite De Forest | 12 | Daughter | — | Indiana |
| 79 | Charles Barrett | 55 | Head | Machinist | Ohio |
| 80 | Louie Barrett | 54 | Wife | — | 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)