FS
Fred Schmidt — 1940 US Census Record
Model Tree available1940 United States Federal Census · Sac-County, Iowa
Our Model Tree links this Fred Schmidt across the 1910, 1920, 1930 and 1940 US Censuses in Sac-County, Iowa (XGBoost, ~Confirmed), with identified parents Carl & Carl — first a son (b.~1903), then head of a 3-person household.
Age 37
b. ~1903
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Sac-County, Iowa |
| Surname | Schmidt |
| Given Name | Fred |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | no |
| 1935 Residence (County) | Sac |
| Additional Details | |
| Occupation | Farmer |
| Industry | Farming |
| Class of Worker | PW |
| Hours Worked | 60 |
| Highest Grade | H 3 |
| 1935 Residence | Same House |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Farmer |
| Township / Ward | No |
| Est. Birth Year | ~1903 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Fred | Age | Birth yr |
|---|---|---|---|---|
| Etta Schmidt | Daughter | — | 39 | ~1901 |
| Carl Schmidt | Head | — | 66 | ~1874 |
| Fred Schmidt | Son | — | 37 | ~1903 |
Census Appearances
1910
Sac, Iowa
Son, age 7
Sac, Iowa · implied b. ~1903 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Schmidt |
| Given Name | Fred |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Germany |
| Mother's Birthplace | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1920
Sac, Iowa
Son, age 17
Sac, Iowa · implied b. ~1903 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Schmidt |
| Given Name | Fred |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Germany |
| Mother's Birthplace | Iowa |
| Occupation | Farm laborer |
| Industry | Home farm |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | German |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Sac, Iowa
Son, age 27
Sac, Iowa · implied b. ~1903 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Schmidt |
| Given Name | Fred |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Laborer |
| Industry | Farm |
| Class of Worker | VVVV |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Sac-County, Iowa
Son, age 37
Sac-County, Iowa · implied b. ~1903 — 3 household members
| Surname | Schmidt |
| Given Name | Fred |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 37 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | no |
| 1935 Residence (County) | Sac |
| Occupation | Farmer |
| Industry | Farming |
| Class of Worker | PW |
| Hours Worked | 60 |
| Highest Grade | H 3 |
| 1935 Residence | Same House |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 Fred Schmidt across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Carl Schmidt (~0.92 confidence) and father Carl Schmidt (~0.92 confidence) and father Carl Schmidt (~0.92 confidence) and father Fred Schmidt (~0.92 confidence) and mother Lena Schmidt (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Carl Schmidt
b. ~1873
Source father
● Household
· direct · ~0.92
Father
Carl Schmidt
b. ~1874
Source father
● Household
· direct · ~0.92
Father
Carl Schmidt
b. ~1874
Source father
● Household
· direct · ~0.92
Father
Fred Schmidt
b. ~1874
Source father
● Household
· direct · ~0.92
Mother
Lena Schmidt
b. ~1877
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Fred Schmidt
Son · 1940 · age 37 · b. ~1903 · Iowa
★ You are viewing this record
Sibling
Etta Schmidt
Sibling · 1940 · age 39
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 — Sac-County, Iowa
Open full size
1940 US Federal Census — Sac-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01201-00708)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Gregory Reising | 33 | Head | Farmer | Iowa |
| 42 | Agnes Reising | 30 | Wife | — | Iowa |
| 43 | Melvin Reising | 5 | Son | — | Iowa |
| 44 | Elmer Reising | 4 | Son | — | Iowa |
| 45 | Raymond Reising | 2 | Son | — | Iowa |
| 46 | Eugene Reising | 1 | Son | — | Iowa |
| 47 | Lavern Erickson | 23 | Hired Hand | Farm Hand | Iowa |
| 48 | Arnold Friedrichs | 42 | Head | Farmer | Iowa |
| 49 | Bena Friedrichs | 33 | Wife | — | Iowa |
| 50 | Peter Horst | 54 | Head | Farmer | Germany |
| 51 | Hilda Horst | 50 | Wife | — | Germany |
| 52 | Hugo Horst | 25 | Son | Farm Hand | Germany |
| 53 | Alma Horst | 18 | Daughter | — | Iowa |
| 54 | Katie Horst | 18 | Daughter | — | Iowa |
| 55 | Dena Horst | 16 | Daughter | — | Iowa |
| 56 | Henrietta Horst | 14 | Daughter | — | Iowa |
| 57 | Jake Horst | 12 | Son | — | Iowa |
| 58 | John Oldnettle | 50 | Head | Farmer | Iowa |
| 59 | Lena Oldnettle | 45 | Wife | — | Germany |
| 60 | Ruby Oldnettle | 19 | Daughter | Waiting On Table | Iowa |
| 61 | John Oldnettle | 17 | Son | Farmer | Iowa |
| 62 | Eldon Oldnettle | 7 | Son | — | Iowa |
| 63 | Carl Schmidt | 66 | Head | Farmer | Germany |
| 64 | Etta Schmidt | 39 | Daughter | — | Iowa |
| 65 | Fred Schmidt THIS PERSON | 37 | Son | Farmer | Iowa |
| 66 | John Schramm | 49 | Head | Farmer | Iowa |
| 67 | Eleanor Schramm | 47 | Wife | — | Iowa |
| 68 | Jean Schramm | 16 | Daughter | — | Iowa |
| 69 | John Schramm | 82 | Father | — | Germany |
| 70 | Arnold Tucker | 34 | Head | Farmer | Illinois |
| 71 | Bertha Tucker | 30 | Wife | — | Iowa |
| 72 | Harold Tucker | 5 | Son | — | Iowa |
| 73 | Jim Tucker | 2 | Son | — | Iowa |
| 74 | Kathryn Tucker | 0 | Daughter | — | Iowa |
| 75 | John Schneppel | 44 | Head | Farmer | Iowa |
| 76 | Marie Schneppel | 34 | Wife | — | Iowa |
| 77 | John Schneppel | 5 | Son | — | Iowa |
| 78 | Theo Schneppel | 42 | Brother | Farmer | Iowa |
| 79 | Arnold Friedrichs | 29 | Head | Farmer | Iowa |
| 80 | Elna Friedrichs | 26 | Wife | — | Iowa |
Pedigree Summary
Fred + 1 sibling
Gen 1 · 5 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)