MR
Mary Roth — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Hamilton-County, Ohio
Our Model Tree links this Mary Roth across the 1930 and 1940 US Censuses in Hamilton-County, Ohio (XGBoost, ~Confirmed) — first a daughter (b.~1921), then head of a 7-person household.
Age 19
b. ~1921
Female
Daughter
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Hamilton-County, Ohio |
| Surname | Roth |
| Given Name | Mary J. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Cincinnati |
| 1935 Residence (County) | Hamilton |
| Additional Details | |
| Highest Grade | C 1 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Township / Ward | Cincinnati |
| Est. Birth Year | ~1921 |
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 |
|---|---|---|---|---|
| Mary Roth | Spouse | — | 68 | ~1872 |
| Robert Roth | Son | — | 11 | ~1929 |
| John Roth | Son | — | 44 | ~1896 |
| Marie Roth | Spouse | — | 43 | ~1897 |
| Mary Roth | Daughter | — | 19 | ~1921 |
| Ann Roth | Son | — | 17 | ~1923 |
| Chas Roth | Head | — | 73 | ~1867 |
Census Appearances
1930
Hamilton, Ohio
Other, age 9
Hamilton, Ohio · implied b. ~1921 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Roth |
| Given Name | Mary J |
| Relationship to Head | Granddaughter |
| Sex | F |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Hamilton-County, Ohio
Daughter, age 19
Hamilton-County, Ohio · implied b. ~1921 — 7 household members
| Surname | Roth |
| Given Name | Mary J. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Cincinnati |
| 1935 Residence (County) | Hamilton |
| Highest Grade | C 1 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
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 Roth across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Roth
Daughter · 1940 · age 19 · b. ~1921 · Ohio
★ You are viewing this record
Sibling
Robert Roth
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ann Roth
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Roth
Sibling · 1940 · age 44
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 — Hamilton-County, Ohio
Open full size
1940 US Federal Census — Hamilton-County, Ohio
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03194-00058)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Nellie Genley | 60 | Servant | House Maid | England |
| 2 | Alex Schubach | 51 | Head | President | Romania |
| 3 | Hilda A. Schubach | 47 | Wife | — | Ohio |
| 4 | Hannah A. Keilson | 84 | Mother-in-law | — | Ohio |
| 5 | May Wallace | 23 | Servant | House Maid | Ohio |
| 6 | Louis Heyn | 62 | Head | Physician | Indiana |
| 7 | Marie K. Heyn | 47 | Wife | — | Ohio |
| 8 | Louis L. A. Heyn | 22 | Son | — | Ohio |
| 9 | Alice M. A. Heyn | 20 | Daughter | — | Ohio |
| 10 | Loretta Munchel | 25 | Servant | Cook | Indiana |
| 11 | Valma Barnhart | 19 | Servant | House Maid | Indiana |
| 12 | Robert R. Siefert | 57 | Head | Salesman | Ohio |
| 13 | Gaya C. Siefert | 47 | Wife | — | Ohio |
| 14 | Robert H. Siefert | 22 | Son | Salesman | Ohio |
| 15 | Chas. E. Roth | 73 | Head | Broker | Ohio |
| 16 | Mary H. Roth | 68 | Wife | — | Ohio |
| 17 | John B. Roth | 44 | Son | Mechanic | Ohio |
| 18 | Marie B. Roth | 43 | Wife | — | Ohio |
| 19 | Mary J. Roth THIS PERSON | 19 | Daughter | — | Ohio |
| 20 | Ann B. Roth | 17 | Son | — | Ohio |
| 21 | Robert F. Roth | 11 | Son | — | Ohio |
| 22 | Walter Sweeney | 45 | Head | Salesman | Ohio |
| 23 | Helen B. Sweeney | 43 | Wife | — | Ohio |
| 24 | Jane A. Sweeney | 21 | Daughter | Clerk | Ohio |
| 25 | Margaret Sweeney | 20 | Daughter | Clerk | Ohio |
| 26 | Jacob Sweeney | 17 | Son | — | Ohio |
| 27 | Helen Sweeney | 16 | Daughter | — | Ohio |
| 28 | Patricia Sweeney | 15 | Daughter | — | Ohio |
| 29 | Thomas Sweeney | 13 | Son | — | Ohio |
| 30 | Walter Jr. Sweeney | 10 | Son | — | Ohio |
| 31 | Constance Sweeney | 6 | Daughter | — | Ohio |
| 32 | Cornelia Sweeney | 3 | Daughter | — | Ohio |
| 33 | Margaret Sweeney | 76 | Mother | — | Ohio |
| 34 | Mary Birnbryer | 52 | Sister-in-law | Accountant | Ohio |
| 35 | Lelia Lauterbach | 73 | Mother-in-law | — | Ohio |
| 36 | Louis Simmons | 50 | Head | Traveling Salesman | New York |
| 37 | Mabel Simmons | 39 | Wife | — | Kentucky |
| 38 | Agnes Mrs. Canner | 45 | Head | Ready To Wear | Ohio |
| 39 | Jeanette Canner | 24 | Daughter | Ready To Wear | Ohio |
| 40 | Lady Goldberg | 45 | Head | — | Poland |
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)