RS
Robert Schmidt — 1940 US Census Record
Model Tree available1940 United States Federal Census · Campbell-County, Kentucky
Our Model Tree links this Robert Schmidt across the 1920, 1930 and 1940 US Censuses in Campbell-County, Kentucky (XGBoost, ~Confirmed), with identified parents Alphonse & William — first a son (b.~1918), then head of a 4-person household.
Age 22
b. ~1918
Male
Son
Born: Kentucky
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Campbell-County, Kentucky |
| Surname | Schmidt |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | Bellevue city |
| 1935 Residence (County) | Campbell |
| Additional Details | |
| Occupation | Optician |
| Industry | Optical Co |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 700 |
| Highest Grade | Hs 3 |
| 1935 Residence | Same Place |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
| Occupation | Optician |
| Township / Ward | Bellevue City |
| Est. Birth Year | ~1918 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Robert Schmidt | Son | — | 22 | ~1918 |
| Alphonso Schmidt | Head | — | 63 | ~1877 |
| Mary Schmidt | Spouse | — | 59 | ~1881 |
| Rita Schmidt | Daughter | — | 18 | ~1922 |
Census Appearances
1920
Campbell, Kentucky
Son, age 1
Campbell, Kentucky · implied b. ~1919 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Schmidt |
| Given Name | Robert A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Kentucky |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Ohio |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1930
Campbell, Kentucky
Son, age 12
Campbell, Kentucky · implied b. ~1918 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Schmidt |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Kentucky |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Ohio |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1940
Campbell-County, Kentucky
Son, age 22
Campbell-County, Kentucky · implied b. ~1918 — 4 household members
| Surname | Schmidt |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | Bellevue city |
| 1935 Residence (County) | Campbell |
| Occupation | Optician |
| Industry | Optical Co |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 700 |
| Highest Grade | Hs 3 |
| 1935 Residence | Same Place |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
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 Robert Schmidt across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Alphonse Schmidt (~0.92 confidence) and father William Schmidt (~0.92 confidence) and mother Mary Schmidt (~0.92 confidence) and mother Mary Schmidt (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Alphonse Schmidt
b. ~1876
Source father
● Household
· direct · ~0.92
Father
William Schmidt
b. ~1876
Source father
● Household
· direct · ~0.92
Mother
Mary Schmidt
b. ~1881
Source mother
● Household
· direct · ~0.92
Mother
Mary Schmidt
b. ~1882
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Schmidt
Son · 1940 · age 22 · b. ~1918 · Kentucky
★ You are viewing this record
Sibling
Rita Schmidt
Sibling · 1940 · age 18
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 — Campbell-County, Kentucky
Open full size
1940 US Federal Census — Campbell-County, Kentucky
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01290-00175)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John Weidner | 27 | Head | Shipping Clerk | Ohio |
| 2 | Alice Weidner | 22 | Wife | Clerk | Nebraska |
| 3 | Charles H Baker | 46 | Head | Clerk | Kentucky |
| 4 | Marie Baker | 44 | Wife | — | Ohio |
| 5 | Betty Baker | 20 | Daughter | Stenographer | Kentucky |
| 6 | Don Baker | 18 | Son | — | Kentucky |
| 7 | Robert Spade | 28 | Head | Rigger | California |
| 8 | May Spade | 23 | Wife | — | New York |
| 9 | Jean Clare Spade | 2 | Daughter | — | Kentucky |
| 10 | Arthur King | 40 | Head | Axe Setter | West Virginia |
| 11 | Opal King | 31 | Wife | Saleslady | Ohio |
| 12 | Albert Yaeger | 26 | Head | Proprietor | Kentucky |
| 13 | Mildred Yaeger | 26 | Wife | — | Kentucky |
| 14 | James Yaeger | 4 | Son | — | Kentucky |
| 15 | William Black | 34 | Head | Sheet Metal Work | Kentucky |
| 16 | Loretta Black | 25 | Wife | — | Kentucky |
| 17 | Gerald Black | 5 | Son | — | Kentucky |
| 18 | John Smith | 58 | Head | Credit Manager | Kentucky |
| 19 | William Smith | 67 | Brother | — | Kentucky |
| 20 | Lee Smith | 65 | Brother | — | Kentucky |
| 21 | Anna Smith | 60 | Sister | — | Kentucky |
| 22 | Charles Drahman | 66 | Head | Laborer | Ohio |
| 23 | Marian Herzog | 18 | Grand Daughter | — | Ohio |
| 24 | Lillian Herzog | 24 | Grand Daughter | Assistant Buyer | Kentucky |
| 25 | Charles Herzog | 21 | Grand Son | Clerk | Kentucky |
| 26 | William Sotherdon | 68 | Lodger | Greener | Kentucky |
| 27 | Dan Schmidt | 31 | Head | Auto Driver | Ohio |
| 28 | Mary Schmidt | 26 | Wife | — | Kentucky |
| 29 | James Schmidt | 8 | Son | — | Ohio |
| 30 | Mary Lee Schmidt | 4 | Daughter | — | Kentucky |
| 31 | Anthony Lion | 52 | Head | Timekeeper | Texas |
| 32 | Mathilda Lion | 50 | Wife | — | Kentucky |
| 33 | Gilbert Rickert | 31 | Head | Shipping Clerk | Kentucky |
| 34 | Hilda Rickert | 31 | Wife | — | Ohio |
| 35 | Laverne Rickert | 10 | Daughter | — | Kentucky |
| 36 | Patricia Rickert | 1 | Daughter | — | Kentucky |
| 37 | Alphonso Schmidt | 63 | Head | Carpenter | Kentucky |
| 38 | Mary Schmidt | 59 | Wife | — | Ohio |
| 39 | Robert Schmidt THIS PERSON | 22 | Son | Optician | Kentucky |
| 40 | Rita Schmidt | 18 | Daughter | — | Kentucky |
Pedigree Summary
Robert + 1 sibling
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)