RS
Ralph Smith — 1940 US Census Record
Model Tree available1940 United States Federal Census · Hamilton-County, Ohio
Our Model Tree links this Ralph Smith across the 1920, 1930 and 1940 US Censuses in Hamilton-County, Ohio (XGBoost, ~Confirmed), with identified parents Chester & Carrie — first a son (b.~1919), then head of a 10-person household.
Age 21
b. ~1919
Male
Son
Born: Ohio
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Hamilton-County, Ohio |
| Surname | Smith |
| Given Name | Ralph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Cincinnati |
| 1935 Residence (County) | Hamilton |
| Additional Details | |
| Occupation | Photo Developer |
| Industry | Nature Taking |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 700 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Ohio |
| Birth Country | United States |
| Birthplace (normalized) | ohio |
| Occupation | Photo Developer |
| Township / Ward | Cincinnati |
| Est. Birth Year | ~1919 |
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 Ralph | Age | Birth yr |
|---|---|---|---|---|
| Caroline Smith | Daughter | — | 8 | ~1932 |
| Margaret Smith | Daughter | — | 19 | ~1921 |
| Doris Smith | Daughter | — | 11 | ~1929 |
| Betty Smith | Daughter | — | 14 | ~1926 |
| Arlene Smith | Daughter | — | 6 | ~1934 |
| Chester Smith | Head | — | 47 | ~1893 |
| Ronald Smith | Son | — | 10 | ~1930 |
| Ralph Smith | Son | — | 21 | ~1919 |
| Raymond Smith | Son | — | 16 | ~1924 |
| Caroline Smith | Spouse | — | 45 | ~1895 |
Census Appearances
1920
Hamilton, Ohio
Son, age
Hamilton, Ohio · implied b. ~1920 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Ralph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| 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 |
1930
Hamilton, Ohio
Son, age 11
Hamilton, Ohio · implied b. ~1919 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Ralph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Ohio |
| 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
Son, age 21
Hamilton-County, Ohio · implied b. ~1919 — 10 household members
| Surname | Smith |
| Given Name | Ralph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Ohio |
| 1935 Residence (City) | Cincinnati |
| 1935 Residence (County) | Hamilton |
| Occupation | Photo Developer |
| Industry | Nature Taking |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 700 |
| Highest Grade | H-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 Ralph Smith across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Chester Smith (~0.92 confidence) and mother Carrie Smith (~0.92 confidence) and mother Caroline Smith (~0.92 confidence) and mother Carry Smith (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Chester Smith
b. ~1893
Source father
● Household
· direct · ~0.92
Mother
Carrie Smith
b. ~1894
Source mother
● Household
· direct · ~0.92
Mother
Caroline Smith
b. ~1895
Source mother
● Household
· direct · ~0.92
Mother
Carry Smith
b. ~1896
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Ralph Smith
Son · 1940 · age 21 · b. ~1919 · Ohio
★ You are viewing this record
Sibling
Raymond Smith
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Betty Smith
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Smith
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ronald Smith
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Doris Smith
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Caroline Smith
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Arlene Smith
Sibling · 1940 · age 6
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-t0627-03199-00185)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Chester Smith | 47 | Head | Conductor | Ohio |
| 42 | Caroline Smith | 45 | Wife | — | Ohio |
| 43 | Ralph Smith THIS PERSON | 21 | Son | Photo Developer | Ohio |
| 44 | Margaret Smith | 19 | Daughter | Clerk | Ohio |
| 45 | Raymond Smith | 16 | Son | — | Ohio |
| 46 | Betty Smith | 14 | Daughter | — | Ohio |
| 47 | Doris Smith | 11 | Daughter | — | Ohio |
| 48 | Ronald Smith | 10 | Son | — | Ohio |
| 49 | Caroline Smith | 8 | Daughter | — | Ohio |
| 50 | Arlene Smith | 6 | Daughter | — | Ohio |
| 51 | Albert Brinker | 40 | Head | Elevator Constructor | Ohio |
| 52 | Eleanore Brinker | 39 | Wife | — | Ohio |
| 53 | Jeanne Brinker | 16 | Daughter | — | Ohio |
| 54 | Fred Foulkney|Faulkner | 46 | Head | Repair Furnace | Kentucky |
| 55 | Marie Foulkney|Faulkner | 42 | Wife | — | Kentucky |
| 56 | Alfred Foulkney|Faulkner | 22 | Son | Oiler | Ohio |
| 57 | Helen Foulkney|Faulkner | 21 | Daughter | Candy Maker | Ohio |
| 58 | Shirley Foulkney|Faulkner | 9 | Daughter | — | Ohio |
| 59 | Louise Foulkney|Faulkner | 9 | Daughter | — | Ohio |
| 60 | James Ward | 37 | Head | Baker | Kentucky |
| 61 | Lula Ward | 31 | Wife | — | Kentucky |
| 62 | Ronald Ward | 3 | Son | — | Kentucky |
| 63 | Larry Ward | 1 | Son | — | Ohio |
| 64 | William Brown | 31 | Head | Truck Driver | Kentucky |
| 65 | Reva Brown | 31 | Wife | — | Kentucky |
| 66 | Dorothy Brown | 2 | Daughter | — | Ohio |
| 67 | Fred Mone | 33 | Head | Proprietor | Kentucky |
| 68 | Opal Mone | 24 | Wife | — | Ohio |
| 69 | Karen Mone | 6 | Daughter | — | Ohio |
| 70 | Constance Mone | 4 | Daughter | — | Ohio |
| 71 | John Rippeiger | 37 | Head | Salesman | Indiana |
| 72 | Philda Rippeiger | 33 | Wife | — | Ohio |
| 73 | Donald Rippeiger | 9 | Son | — | Ohio |
| 74 | Harry Mordengal|Mordengard | 44 | Head | Pump Hanger | Ohio |
| 75 | Addie Mordengal|Mordengard | 47 | Wife | — | Ohio |
| 76 | Amanda Burg | 80 | Mother-in-law | — | Ohio |
| 77 | Luther Vail | 35 | Head | Laborer | Indiana |
| 78 | Mary Vail | 31 | Wife | — | Indiana |
| 79 | Agnes Vail | 12 | Daughter | — | Indiana |
| 80 | Velma Vail | 10 | Daughter | — | Indiana |
Pedigree Summary
Ralph + 7 siblings
Gen 1 · 4 parents
~0.92
Max depth 4 (1900–1950 window)
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)