MD
Mary Decker — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Hamilton-County, Ohio
Our Model Tree links this Mary Decker across the 1930 and 1940 US Censuses in Hamilton-County, Ohio (XGBoost, ~Confirmed) — first a spouse (b.~1891), then head of a 5-person household.
Age 49
b. ~1891
Female
Spouse
Born: Ohio
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Hamilton-County, Ohio |
| Surname | Decker |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Ohio |
| 1935 Residence (City) | Norwood city |
| 1935 Residence (County) | Hamilton |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Township / Ward | Norwood City |
| Est. Birth Year | ~1891 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Thomas Decker | Head | — | 50 | ~1890 |
| Myrlin Decker | Son | — | 27 | ~1913 |
| Herschell Decker | Son | — | 28 | ~1912 |
| Jack Decker | Son | — | 19 | ~1921 |
| Mary Decker | Spouse | — | 49 | ~1891 |
Census Appearances
1930
Hamilton, Ohio
Other, age 39
Hamilton, Ohio · implied b. ~1891 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Decker |
| Given Name | Mary |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Ohio |
| Age at First Marriage | 19 |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Can Read/Write | Yes |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Hamilton-County, Ohio
Spouse, age 49
Hamilton-County, Ohio · implied b. ~1891 — 5 household members
| Surname | Decker |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 49 |
| Marital Status | Married |
| Birthplace | Ohio |
| 1935 Residence (City) | Norwood city |
| 1935 Residence (County) | Hamilton |
| Class of Worker | 0 |
| Highest Grade | Hs 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 Decker across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Decker
Spouse · 1940 · age 49 · b. ~1891 · Ohio
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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-t0627-03078-00861)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Pearl Harris | 60 | Head | Assembler | Kentucky |
| 2 | James Ragle | 37 | Head | — | Indiana |
| 3 | Myrtle Ragle | 35 | Wife | — | Kentucky |
| 4 | Charles Rotenberry | 45 | Lodger | Maintenance Man | Georgia |
| 5 | Ruby Rotenberry | 45 | Lodger | Res. Worker | Alabama |
| 6 | George J. Wahl | 25 | Lodger | Shipping Clerk | Ohio |
| 7 | Elsie T. Wahl | 25 | Lodger | Clerk | Michigan |
| 8 | Thomas Miller | 53 | Lodger | Die Setter | Penn. |
| 9 | Laura R. Ramsdell | 69 | Head | — | Ohio |
| 10 | Philip Stoll | 52 | Son-in-law | Iron Moulder | Ohio |
| 11 | Laura E. Stoll | 39 | Wife | — | Ohio |
| 12 | James E. Bruckner | 44 | Lodger | Sales Engineer | Ohio |
| 13 | George B. Taylor | 26 | Head | Truck Driver | Michigan |
| 14 | Gladys L. Taylor | 24 | Wife | — | Ohio |
| 15 | Byron L. Taylor | 4 | Son | — | Ohio |
| 16 | Louise Sunderbruch | 84 | Head | — | Ohio |
| 17 | Thomas L. Decker | 50 | Head | Auto Repair | Ohio |
| 18 | Mary Decker THIS PERSON | 49 | Wife | — | Ohio |
| 19 | Herschell R. Decker | 28 | Son | Office Clerk | Ohio |
| 20 | Myrlin W. Decker | 27 | Son | Asst. Mgr. | Ohio |
| 21 | Jack C. Decker | 19 | Son | Asst. Mgr. | Ohio |
| 22 | — | None | — | — | — |
| 23 | Neal H. Ramsay | 33 | Head | Machinist | Tennessee |
| 24 | Lillian M. Ramsay | 30 | Wife | — | Ohio |
| 25 | Richard J. Ramsay | 9 | Son | — | Ohio |
| 26 | June P. Ramsay | 7 | Daughter | — | Ohio |
| 27 | John Ramsay | 5 | Son | — | Ohio |
| 28 | Joyce Ramsay | 2 | Daughter | — | Ohio |
| 29 | Walter B. Dumford | 22 | Head | Mach. Operator | Ohio |
| 30 | Ruth M. Dumford | 21 | Wife | — | Ohio |
| 31 | Ruth A. Dumford | 0 | Daughter | — | Ohio |
| 32 | Claude Beasley | 39 | Head | Cab. Builder | Kentucky |
| 33 | Clutie Beasley | 30 | Wife | — | Kentucky |
| 34 | Phylis Beasley | 12 | Daughter | — | Ohio |
| 35 | Herman Johnson | 29 | Head | Fireman | Tennessee |
| 36 | Pearl Johnson | 24 | Wife | Shoe Worker | Kentucky |
| 37 | Albert N. Johnson | 26 | Lodger | Land Scaping | Tennessee |
| 38 | Joseph W. Finkle | 67 | Head | — | Ohio |
| 39 | Rose C. Finkle | 40 | Daughter | — | Ohio |
| 40 | Robert C. Finkle | 39 | Son | Sales Mgr. | Ohio |
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)