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John Brown — 1930 US Census Record
Model Tree available1930 United States Federal Census · Baltimore, Maryland
Our Model Tree links this John Brown across the 1910, 1920 and 1930 US Censuses in Baltimore, Maryland (XGBoost, ~Confirmed), with identified parents John & Mary — first a head (b.~1896), then head of a 3-person household.
Age 34
b. ~1896
Male
Head
Born: Maryland
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Baltimore, Maryland |
| Surname | Brown |
| Given Name | John M |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 21 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Additional Details | |
| Occupation | Conductor |
| Industry | Street Railway |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 4800 |
| Radio Set | R |
| Veteran | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Conductor |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1896 |
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 |
|---|---|---|---|---|
| John Brown | Head | — | 34 | ~1896 |
| Marie Brown | Other | — | 34 | ~1896 |
| Charles Brown | Son | — | 11 | ~1919 |
Census Appearances
1910
Baltimore, Maryland
Son, age 12
Baltimore, Maryland · implied b. ~1898 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brown |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| 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
Head, age 23
Baltimore, Maryland · implied b. ~1897 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Brown |
| Given Name | John M. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Married |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Head, age 34
Baltimore, Maryland · implied b. ~1896 — 3 household members
| Surname | Brown |
| Given Name | John M |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 21 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Conductor |
| Industry | Street Railway |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 4800 |
| Radio Set | R |
| Veteran | 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 Brown across 3 US Census years (1910, 1920 and 1930) in Baltimore, Maryland, using XGBoost record linkage. Identified parents: father John Brown (~0.92 confidence) and mother Mary Brown (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Brown
b. ~1875
Source father
● Household
· direct · ~0.92
Mother
Mary Brown
b. ~1878
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Brown
Head · 1930 · age 34 · b. ~1896 · 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:1930:15thcensus867unit:0969)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | William C Medley | 2 | Son | — | Maryland |
| 2 | John J Urner | 34 | Head | — | Maryland |
| 3 | Clara M Urner | 37 | Wife-H | Helper | Maryland |
| 4 | Ruth M Urner | 10 | Daughter | — | Maryland |
| 5 | Robert A Kellum | 54 | Head | — | Maryland |
| 6 | Emma G Kellum | 53 | Wife-H | Machinist | Maryland |
| 7 | Joseph V Meredith | 39 | Head | — | Maryland |
| 8 | Etta C Meredith | 38 | Wife-H | Painter | Maryland |
| 9 | Lillian E Meredith | 15 | Daughter | — | Maryland |
| 10 | William H Harrison | 32 | Head | — | Maryland |
| 11 | Frieda Harrison | 25 | Wife-H | Bookkeeper | New Jersey |
| 12 | William A Jr Harrison | 11 | Son | — | Maryland |
| 13 | Charles E Harrison | 5 | Son | — | Maryland |
| 14 | Vincent Misakavich | 34 | Head | Tailor | Lithuania |
| 15 | Anna Misakavich | 25 | Wife-H | — | Pennsylvania |
| 16 | Joseph Castrilli | 27 | Head | Fruit & Produce | Maryland |
| 17 | Mildred Castrilli | 19 | Wife-H | — | Maryland |
| 18 | Charles A Gripp | 44 | Head | Asst Shipping Clerk | Maryland |
| 19 | Amelia Gripp | 41 | Wife-H | — | Maryland |
| 20 | Catherine Nicoll | 51 | Head | — | Maryland |
| 21 | Margaret Nicoll | 22 | Daughter | Clerk | Maryland |
| 22 | Charles T Steigerwald | 25 | Son-in-law | Machine Oper | Maryland |
| 23 | Ellen Steigerwald | 24 | Daughter | — | Maryland |
| 24 | Lester T Jr Steigerwald | 4 | Grandson | — | Maryland |
| 25 | Doris Steigerwald | 3 | Granddaughter | — | Maryland |
| 26 | William T Schaub | 32 | Head | Chauffeur | Maryland |
| 27 | Katharine Schaub | 32 | Wife-H | — | Maryland |
| 28 | Dorothy Schaub | 9 | Daughter | — | Maryland |
| 29 | Eunice Schaub | 5 | Daughter | — | Maryland |
| 30 | Joseph Schaub | 19 | Nephew | Machinist Helper | Maryland |
| 31 | John T Flentz | 32 | Head | Clerk | Maryland |
| 32 | Helen M Flentz | 26 | Wife-H | — | Maryland |
| 33 | Raymond J Flentz | 4 | Son | — | Maryland |
| 34 | John T Jr Flentz | 2 | Son | — | Maryland |
| 35 | Florence H Flentz | 0 | Daughter | — | Maryland |
| 36 | John P Wilhelm | 30 | Head | Foreman | Maryland |
| 37 | Edna Wilhelm | 26 | Wife-H | — | Maryland |
| 38 | Phyllis N Wilhelm | 5 | Daughter | — | Maryland |
| 39 | John Schmidt | 30 | Head | Fireman | Maryland |
| 40 | Marie S Schmidt | 36 | Wife-H | — | Maryland |
| 41 | John W Schmidt | 11 | Son | — | Maryland |
| 42 | Adam Steigerwald | 50 | Head | Finisher | Germany |
| 43 | Bertha Steigerwald | 44 | Wife-H | — | Maryland |
| 44 | Charles Thelen | 25 | Son-in-law | Fireman | Maryland |
| 45 | Evelyn Thelen | 22 | Daughter | — | Maryland |
| 46 | John M Brown THIS PERSON | 34 | Head | Conductor | Maryland |
| 47 | Marie A Brown | 34 | Wife-H | — | Maryland |
| 48 | Charles M Brown | 11 | Son | — | Maryland |
| 49 | Robert L Kaiss | 36 | Head | Fireman | Maryland |
| 50 | Lillian Kaiss | 36 | Wife-H | — | Maryland |
Pedigree Summary
John
Gen 1 · 2 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)