JB
John Bauer — 1930 US Census Record
Model Tree available1930 United States Federal Census · Baltimore, Maryland
Our Model Tree links this John Bauer across the 1910, 1920 and 1930 US Censuses in Baltimore, Maryland (XGBoost, ~Confirmed), with identified parents John & Mollie — first a son (b.~1902), then head of a 3-person household.
Age 28
b. ~1902
Male
Son
Born: Maryland
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Baltimore, Maryland |
| Surname | Bauer |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Baltimore |
| Est. Birth Year | ~1902 |
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 |
|---|---|---|---|---|
| Catherine Bauer | Daughter | — | 30 | ~1900 |
| John Bauer | Head | — | 70 | ~1860 |
| John Bauer | Son | — | 28 | ~1902 |
Census Appearances
1910
Baltimore, Maryland
Son, age 8
Baltimore, Maryland · implied b. ~1902 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Bauer |
| Given Name | John F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1920
Baltimore, Maryland
Son, age 19
Baltimore, Maryland · implied b. ~1901 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Baier |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Bartender |
| Industry | Saloon |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Son, age 28
Baltimore, Maryland · implied b. ~1902 — 3 household members
| Surname | Bauer |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 28 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read/Write | Yes |
| 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 Bauer across 3 US Census years (1910, 1920 and 1930) in Baltimore, Maryland, using XGBoost record linkage. Identified parents: father John Bauer (~0.92 confidence) and mother Mollie Baier (~0.92 confidence) and father Paul Baier (~0.92 confidence) and father John Bauer (~0.92 confidence) and mother Katie Bauer (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Bauer
b. ~1860
Source father
● Household
· direct · ~0.92
Mother
Mollie Baier
b. ~1867
Source mother
● Household
· direct · ~0.92
Father
Paul Baier
b. ~1867
Source father
● Household
· direct · ~0.92
Father
John Bauer
b. ~1872
Source father
● Household
· direct · ~0.92
Mother
Katie Bauer
b. ~1875
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Bauer
Son · 1930 · age 28 · b. ~1902 · Maryland
★ You are viewing this record
Sibling
Catherine Bauer
Sibling · 1930 · age 30
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
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:1930:15thcensus866unit:0334)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | John Bauer | 70 | Head | — | Maryland |
| 52 | Catherine Bauer | 30 | Daughter | Booker | Maryland |
| 53 | John Bauer THIS PERSON | 28 | Son | — | Maryland |
| 54 | Joseph Vacek | 45 | Head | Baker | Maryland |
| 55 | Mary Vacek | 40 | Wife | Baker | Maryland |
| 56 | Thomas Vacek | 15 | Son | — | Maryland |
| 57 | Joseph Vacek | 13 | Son | — | Maryland |
| 58 | William Stubbs | 51 | Head | Smith | Tennessee |
| 59 | Mattie Stubbs | 54 | Wife | — | Missouri |
| 60 | Louis Mahl | 29 | Head | Yard Master | Maryland |
| 61 | Edna Mahl | 25 | Wife | — | Maryland |
| 62 | Reginald Mahl | 3 | Son | — | Maryland |
| 63 | Edna Mahl | 1 | Daughter | — | Maryland |
| 64 | Loretta Mahl | 0 | Daughter | — | Maryland |
| 65 | George Cook | 47 | Head | Mechanic | Maryland |
| 66 | Mary Cook | 38 | Wife | — | Maryland |
| 67 | George Cook | 18 | Son | Instrument Repair | Maryland |
| 68 | Joseph Cook | 15 | Son | — | Maryland |
| 69 | Evelyn Cook | 12 | Daughter | — | Maryland |
| 70 | Adelaide Cook | 10 | Daughter | — | Maryland |
| 71 | Joseph Labelle | 42 | Head | Private Detective | Maryland |
| 72 | Lillian Labelle | 37 | Wife | — | Maryland |
| 73 | Joseph Labelle | 17 | Son | — | Maryland |
| 74 | William Labelle | 13 | Son | — | Maryland |
| 75 | Mary Labelle | 11 | Daughter | — | Maryland |
| 76 | John Molan | 44 | Head | Chauffeur | Maryland |
| 77 | Edna Molan | 41 | Wife | — | Maryland |
| 78 | Elmer Molan | 18 | Son | Errand Boy | Maryland |
| 79 | Edward Molan | 8 | Son | — | Maryland |
| 80 | Adam Bauer | 57 | Head | Clerk | Maryland |
| 81 | Mary Bauer | 53 | Wife | — | Maryland |
| 82 | Violet Bauer | 29 | Daughter | — | Maryland |
| 83 | Adam Bauer | 26 | Son | Floor Man | Maryland |
| 84 | Mildred Bauer | 18 | Daughter | — | Maryland |
| 85 | Frederick Bauer | 15 | Son | — | Maryland |
| 86 | Dorothy Bauer | 12 | Daughter | — | Maryland |
| 87 | George Erb | 55 | Head | Locksmith | Maryland |
| 88 | Annie Erb | 52 | Wife | — | Germany |
| 89 | Annie Erb | 31 | Daughter | Bookkeeper | Maryland |
| 90 | John Erb | 21 | Son | Agent | Maryland |
| 91 | Joseph Lippert | 31 | Head | Weighmaster | New York |
| 92 | Edna Lippert | 31 | Wife | — | Virginia |
| 93 | James Lippert | 10 | Son | Messenger | Maryland |
| 94 | Lillian Lippert | 7 | Daughter | — | Maryland |
| 95 | Mary Lippert | 5 | Daughter | — | Maryland |
| 96 | Veronica Dietrich | 44 | Head | Baker | Germany |
| 97 | Joseph Dietrich | 20 | Son | — | Maryland |
| 98 | Anita Dietrich | 15 | Daughter | — | Maryland |
| 99 | Leonard Dietrich | 13 | Son | — | Maryland |
| 100 | Elizabeth Dietrich | 11 | Daughter | — | Maryland |
Pedigree Summary
John + 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 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)