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James Day — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Hamilton-County, Ohio
Our Model Tree links this James Day across the 1930 and 1940 US Censuses in Hamilton-County, Ohio (XGBoost, ~Confirmed) — first a son (b.~1928), then head of a 10-person household.
Age 12
b. ~1928
Male
Son
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Hamilton-County, Ohio |
| Surname | Day |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Cincinnati City |
| 1935 Residence (County) | Hamilton |
| Additional Details | |
| Highest Grade | G 4 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Township / Ward | Cincinnati City |
| 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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Hazel Day | Daughter | — | 10 | ~1930 |
| Marie Day | Daughter | — | 20 | ~1920 |
| Mildred Day | Daughter | — | 5 | ~1935 |
| Mary Day | Daughter | — | 18 | ~1922 |
| Daniel Day | Head | — | 49 | ~1891 |
| James Day | Son | — | 12 | ~1928 |
| Cecil Day | Son | — | 9 | ~1931 |
| Daniel Day | Son | — | 16 | ~1924 |
| George Day | Son | — | 14 | ~1926 |
| Lillie Day | Spouse | — | 42 | ~1898 |
Census Appearances
1930
Hamilton, Ohio
Son, age 2
Hamilton, Ohio · implied b. ~1928 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Day |
| Given Name | Jimmy |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Ohio |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Ohio |
| Occupation | none |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
1940
Hamilton-County, Ohio
Son, age 12
Hamilton-County, Ohio · implied b. ~1928 — 10 household members
| Surname | Day |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Cincinnati City |
| 1935 Residence (County) | Hamilton |
| Highest Grade | G 4 |
| 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 James Day across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Day
Son · 1940 · age 12 · b. ~1928 · Ohio
★ You are viewing this record
Sibling
Mildred Day
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Day
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Cecil Day
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marie Day
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Day
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Daniel Day
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Hazel Day
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 — 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-t0627-03192-00914)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Archer Lewis | 14 | Nephew | — | Ohio |
| 2 | Carl Smith | 44 | Head | Driver | Indiana |
| 3 | Margaret Smith | 40 | Wife | — | Indiana |
| 4 | Harry Frerichs | 41 | Head | Baker | Germany |
| 5 | Florence Frerichs | 39 | Wife | — | Ohio |
| 6 | Adrienne Frerichs | 1 | Daughter | — | Ohio |
| 7 | Joseph Eyermann | 37 | Head | Mechanic | Ohio |
| 8 | Bernice Eyermann | 29 | Wife | Waitress | Tennessee |
| 9 | Joseph Eyermann | 16 | Son | Salesman | Ohio |
| 10 | Harold Eyermann | 10 | Son | — | Ohio |
| 11 | Robert Long | 49 | Head | Chauffeur | Ohio |
| 12 | Elsie Long | 47 | Sister | Inspector | Ohio |
| 13 | Catherine Long | 38 | Sister | — | Ohio |
| 14 | Jerd Deiker | 30 | Head | Steel Worker | Ohio |
| 15 | Ethel Deiker | 30 | Wife | Salesperson | Ohio |
| 16 | Lannie Schueller | 72 | Head | — | Ohio |
| 17 | Warren Clifford | 80 | Head | — | Ohio |
| 18 | Ella Julian | 51 | Housekeeper | Housekeeper | Ohio |
| 19 | Jacob Best | 68 | Head | Janitor | Ohio |
| 20 | Minnie Best | 66 | Wife | — | Illinois |
| 21 | Rose Zimmerman | 72 | Head | — | Ohio |
| 22 | Samuel Smith | 78 | Head | — | Ohio |
| 23 | Ella Smith | 75 | Wife | — | Ohio |
| 24 | Tyler Morrow | 49 | Head | Machinist | Kentucky |
| 25 | Nora Morrow | 29 | Wife | Waitress | Ohio |
| 26 | Daniel Day | 49 | Head | Night Watchman | Kentucky |
| 27 | Lillie Day | 42 | Wife | — | Kentucky |
| 28 | Marie Day | 20 | Daughter | Packer | Kentucky |
| 29 | Mary Day | 18 | Daughter | Waitress | Ohio |
| 30 | Daniel Day | 16 | Son | — | Ohio |
| 31 | George Day | 14 | Son | — | Ohio |
| 32 | James Day THIS PERSON | 12 | Son | — | Ohio |
| 33 | Hazel Day | 10 | Daughter | — | Ohio |
| 34 | Cecil Day | 9 | Son | — | Ohio |
| 35 | Mildred Day | 5 | Daughter | — | Ohio |
| 36 | Nicholas Diehl | 58 | Head | Dry Cleaner | Ohio |
| 37 | Ada Diehl | 50 | Wife | — | Ohio |
| 38 | Mary Bender | 16 | Head | — | Ohio |
| 39 | Elmer Bender | 49 | Son | Presser | Ohio |
| 40 | Estel Owens | 35 | Head | Motorman | Tennessee |
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)