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John Schmidt — 1930 US Census Record
Model Tree available1930 United States Federal Census · Baltimore, Maryland
Our Model Tree links this John Schmidt across the 1920, 1930 and 1940 US Censuses in Baltimore, Maryland (XGBoost, ~Confirmed), with identified parents John & Mary — first a head (b.~1904), then head of a 3-person household.
Age 26
b. ~1904
Male
Head
Born: Maryland
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Baltimore, Maryland |
| Surname | Schmidt |
| Given Name | John E. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 25 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Additional Details | |
| Occupation | Dentist |
| Industry | Laboratory |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 25 |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Dentist |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1904 |
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 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Jacklin Schmidt | Daughter | — | 2 | ~1928 |
| John Schmidt | Head | — | 26 | ~1904 |
| Katherine Schmidt | Other | — | 19 | ~1911 |
Census Appearances
1920
Baltimore, Maryland
Son, age 16
Baltimore, Maryland · implied b. ~1904 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Schmidt |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Clerk |
| Industry | Grocery Store |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | German |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Head, age 26
Baltimore, Maryland · implied b. ~1904 — 3 household members
| Surname | Schmidt |
| Given Name | John E. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 25 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Dentist |
| Industry | Laboratory |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 25 |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Son, age 36
Baltimore-City-County, Maryland · implied b. ~1904 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Schmidt |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 36 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Occupation | Clerk |
| Industry | Store |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1040 |
| Highest Grade | No 8 |
| 1935 Residence | Same Place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
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 John Schmidt across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Schmidt (~0.92 confidence) and mother Mary Schmidt (~0.92 confidence) and mother Theresa Schmidt (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Schmidt
b. ~1864
Source father
● Household
· direct · ~0.92
Mother
Mary Schmidt
b. ~1870
Source mother
● Household
· direct · ~0.92
Mother
Theresa Schmidt
b. ~1878
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Schmidt
Head · 1930 · age 26 · b. ~1904 · Maryland
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Baltimore, Maryland
Open full size
1930 US Federal Census — Baltimore, Maryland
Page Contents
50 people indexed on this census page (ia:1930:15thcensus869unit:0643)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | William Grauel | 52 | Head | Builder | Maryland |
| 2 | Elizabeth R. Grauel | 27 | Wife-H | — | Maryland |
| 3 | Irvin W. Grauel | 22 | Son | — | Maryland |
| 4 | Wanda Edna Grauel | 43 | Daughter | Housekeeper | Maryland |
| 5 | Emma L. Grauel | 19 | Daughter | — | Maryland |
| 6 | William Patterson | 29 | Head | Florist | Maryland |
| 7 | Barbara P. Patterson | 24 | Wife-H | — | Maryland |
| 8 | Mary B. Patterson | 2 | Daughter | — | Maryland |
| 9 | Joseph S. Eyler | 56 | Head | Bookkeeper | Maryland |
| 10 | Margaret H. Eyler | 52 | Wife-H | — | Maryland |
| 11 | John H. Stohn | 54 | Head | Policeman | Maryland |
| 12 | Elizabeth C. Stohn | 49 | Wife-H | — | Germany |
| 13 | Howard Stohn | 22 | Son | Lawyer | Maryland |
| 14 | Hattie Mitchelson | 53 | Sister-in-law | Saleslady | Germany |
| 15 | Harry E. Stengel | 36 | Head | Real Estate | Maryland |
| 16 | K. Edna Stengel | 30 | Wife-H | — | Maryland |
| 17 | Hattie L. Stengel | 12 | Daughter | — | Maryland |
| 18 | Audrey M. Stengel | 12 | Daughter | — | Maryland |
| 19 | Harry E. Stengel | 3 | Son | — | Maryland |
| 20 | Janet L. Stengel | 1 | Daughter | — | Maryland |
| 21 | W. Grolla Stengel | 0 | Son | — | Maryland |
| 22 | Edward B. Stengel | 0 | Son | — | Maryland |
| 23 | Mary W. Rogers | 20 | Boarder | Factory Worker | Maryland |
| 24 | Howard M. Amoss | 40 | Head | Insurance Broker | Maryland |
| 25 | Etta M. Amoss | 37 | Wife-H | — | Ohio |
| 26 | Etta M. Amoss | 3 | Daughter | — | Maryland |
| 27 | Sue R. Fischer | 27 | Sister-in-law | General Worker | Ohio |
| 28 | Michael P. May | 74 | Head | — | Maryland |
| 29 | Agnes E. May | 72 | Wife-H | — | Maryland |
| 30 | Joseph S. May | 46 | Son | Salesman | Maryland |
| 31 | Sophia M. May | 43 | Wife | — | Maryland |
| 32 | Joseph S. May | 18 | Son | — | Maryland |
| 33 | Francis X. May | 15 | Son | — | Maryland |
| 34 | Barbara A. May | 13 | Daughter | — | Maryland |
| 35 | Robert E. May | 9 | Son | — | Maryland |
| 36 | Mary E. May | 5 | Daughter | — | Maryland |
| 37 | Ruth M. May | 1 | Daughter | — | Maryland |
| 38 | Mary E. May | 43 | Daughter | — | Maryland |
| 39 | Agnes M. May | 35 | Daughter | — | Maryland |
| 40 | Mary E. Benninger | 69 | Sister-in-law | — | Maryland |
| 41 | Henry L. Zucker | 37 | Head | Collector | Maryland |
| 42 | Bessie E. Zucker | 27 | Wife-H | — | Virginia |
| 43 | Margaret M. Zucker | 5 | Daughter | — | Maryland |
| 44 | Henry F. Zucker | 3 | Son | — | Maryland |
| 45 | John E. Schmidt THIS PERSON | 26 | Head | Dentist | Maryland |
| 46 | Katherine Schmidt | 19 | Wife-H | — | Maryland |
| 47 | Jacklin O. Schmidt | 2 | Daughter | — | Maryland |
| 48 | Otis E. Hopper | 42 | Head | Book Binder | Maryland |
| 49 | Alice E. Hopper | 37 | Wife-H | — | Maryland |
| 50 | Otis E. Hopper | 11 | Son | — | Maryland |
Pedigree Summary
John
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)