JW
John Walter — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Baltimore, Maryland
Our Model Tree links this John Walter across the 1930 and 1940 US Censuses in Baltimore, Maryland (XGBoost, ~Confirmed) — first a son (b.~1919), then head of a 8-person household.
Age 11
b. ~1919
Male
Son
Born: Maryland
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Baltimore, Maryland |
| Surname | Walter |
| Given Name | John W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Pennsylvania |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1919 |
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.
8 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Charles Frehn | Other | — | 68 | ~1862 |
| John Walter | Son | — | 11 | ~1919 |
| Alice Walter | Daughter | — | 5 | ~1925 |
| Wm Walter | Head | — | 40 | ~1890 |
| S Walter | Son | — | 8 | ~1922 |
| Alice Walter | Spouse | — | 37 | ~1893 |
| Margaret Walter | Daughter | — | 12 | ~1918 |
| Joseph Walter | Son | — | 10 | ~1920 |
Census Appearances
1930
Baltimore, Maryland
Son, age 11
Baltimore, Maryland · implied b. ~1919 — 8 household members
| Surname | Walter |
| Given Name | John W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Other, age 22
Baltimore-City-County, Maryland · implied b. ~1918 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Wolters |
| Given Name | John H. |
| Relationship to Head | Brother |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Occupation | Plumber Helper |
| Industry | House |
| Class of Worker | PW |
| Hours Worked | 10 |
| Income (1939) | 950 |
| Highest Grade | Hs 4 |
| 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 Walter across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Walter
Son · 1930 · age 11 · b. ~1919 · Maryland
★ You are viewing this record
Sibling
Margaret Walter
Sibling · 1930 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Walter
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Walter
Sibling · 1930 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
S Walter
Sibling · 1930 · age 8
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:1930:15thcensus868unit:1024)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Charles S. Miller | 53 | Head | Cutter | Maryland |
| 2 | Emma S. Miller | 53 | Wife | — | Maryland |
| 3 | Howard H. Rau | 31 | Son-in-law | Manager | Maryland |
| 4 | Annette G. Rau | 31 | Daughter | — | Maryland |
| 5 | Virginia Rau | 5 | Granddaughter | — | Maryland |
| 6 | Bessie Miller | 15 | Daughter | Clerk | Maryland |
| 7 | Geo. W. Schierer | 50 | Head | Broker | Maryland |
| 8 | Emily Schierer | 48 | Wife | — | Maryland |
| 9 | Lydia E. Schierer | 20 | Daughter | Teacher | Maryland |
| 10 | Margaret E. Schierer | 18 | Daughter | Stenographer | Maryland |
| 11 | Geo. W. Jr. Schierer | 10 | Son | — | Maryland |
| 12 | Joseph A. Clark | 46 | Head | Attorney | Germany |
| 13 | Elizabeth Clark | 44 | Wife | — | Maryland |
| 14 | Wm. W. Walter | 40 | Head | Salesman | Maryland |
| 15 | Alice B. Walter | 37 | Wife | — | Pennsylvania |
| 16 | John W. Walter THIS PERSON | 11 | Son | — | Maryland |
| 17 | Joseph H. Walter | 10 | Son | — | Maryland |
| 18 | Margaret E. Walter | 12 | Daughter | — | Maryland |
| 19 | S. Frederick Walter | 8 | Son | — | Maryland |
| 20 | Alice E. Walter | 5 | Daughter | — | Maryland |
| 21 | Charles P. Frehn | 68 | Father-in-law | Barber | Maryland |
| 22 | L. Welbourn Benson | 44 | Head | Plasterer | Maryland |
| 23 | Mabel C. Benson | 42 | Wife | — | Maryland |
| 24 | George Sauer | 34 | Head | Bookkeeper | Maryland |
| 25 | Beatrice Sauer | 32 | Wife | — | Maryland |
| 26 | Charles Patschke | 68 | Head | — | Maryland |
| 27 | Annie Patschke | 66 | Wife | — | Maryland |
| 28 | Annie Patschke | 44 | Daughter | Seamstress | Maryland |
| 29 | Louise F. Patschke | 42 | Daughter | Clerk | Maryland |
| 30 | Sallie Patschke | 40 | Daughter | Runner | Maryland |
| 31 | Margaret M. Patschke | 37 | Daughter | Clerk | Maryland |
| 32 | John Patschke | 34 | Son | Letter Carrier | Maryland |
| 33 | Theresa B. Patschke | 31 | Daughter | Stenographer | Maryland |
| 34 | Theodore B. Patschke | 29 | Son | Tally Clerk | Maryland |
| 35 | William W. Estep | 47 | Head | Ironworker | Maryland |
| 36 | Anna M. Estep | 48 | Wife | — | Maryland |
| 37 | Albert F. Schmidt | 38 | Head | Baker | Maryland |
| 38 | Alice M. Schmidt | 34 | Wife | — | Virginia |
| 39 | Albert Jr. Schmidt | 12 | Son | — | Maryland |
| 40 | Donald Schmidt | 6 | Son | — | Maryland |
| 41 | Louis Taylor | 49 | Head | Shipbuilder | Maryland |
| 42 | Anna V. Taylor | 26 | Son | Auto Mechanic | Maryland |
| 43 | Albert S. Taylor | 15 | Daughter | — | Maryland |
| 44 | Virginia Taylor | 8 | Daughter | — | Maryland |
| 45 | Gladys Taylor | 6 | Daughter | — | Maryland |
| 46 | Sarah E. Shaw | 60 | Sister-in-law | — | Maryland |
| 47 | William Young | 30 | Head | Electrician | Maryland |
| 48 | Marie E. Young | 29 | Wife | — | Maryland |
| 49 | Elizabeth Young | 5 | Daughter | — | Maryland |
| 50 | William Jr. Young | 3 | Son | — | Maryland |
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)