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John Schwartz — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this John Schwartz across the 1920, 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed) — first a head (b.~1871), then head of a 3-person household.
Age 69
b. ~1871
Male
Head
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Schwartz |
| Given Name | John F. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 69 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Additional Details | |
| Occupation | Salesman |
| Industry | Koester Bakery |
| Class of Worker | PW |
| Hours Worked | 47 |
| Income (1939) | 1040 |
| Highest Grade | No 8 |
| 1935 Residence | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Salesman |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1871 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| John Schwartz | Head | — | 69 | ~1871 |
| Emma Schwartz | Spouse | — | 61 | ~1879 |
| Helen Schwartz | Daughter | — | 42 | ~1898 |
Census Appearances
1920
Baltimore, Maryland
Head, age 48
Baltimore, Maryland · implied b. ~1872 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Schwartz |
| Given Name | John C |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 48 |
| Marital Status | Married |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Germany |
| Occupation | Marble Worker |
| Industry | Marble Co |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Head, age 58
Baltimore, Maryland · implied b. ~1872 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Schwartz |
| Given Name | John C. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 58 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 23 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Germany |
| Occupation | Marble Cutter |
| Industry | Marble Yard |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 4200 |
| Radio Set | R |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Head, age 69
Baltimore-City-County, Maryland · implied b. ~1871 — 3 household members
| Surname | Schwartz |
| Given Name | John F. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 69 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Occupation | Salesman |
| Industry | Koester Bakery |
| Class of Worker | PW |
| Hours Worked | 47 |
| Income (1939) | 1040 |
| Highest Grade | No 8 |
| 1935 Residence | Maryland |
| 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 Schwartz across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Schwartz
Head · 1940 · age 69 · b. ~1871 · Maryland
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Baltimore-City-County, Maryland
Open full size
1940 US Federal Census — Baltimore-City-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01532-00107)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Joseph B. Twilley | 36 | Head | Captain, Fireman | Maryland |
| 2 | Elsie I. Twilley | 34 | Wife | — | Virginia |
| 3 | Leslie A. Weber | 36 | Head | Machinist Helper | Maryland |
| 4 | Cecil S. Weber | 34 | Lodger | Manager Of Service Station | Maryland |
| 5 | Annie E. Omohundro | 71 | Lodger | — | Maryland |
| 6 | Sylvester D. Ginsburg | 44 | Head | Proprietor | Maryland |
| 7 | Mabel A. Ginsburg | 33 | Wife | — | Maryland |
| 8 | (Blank) (Blank) | None | (blank) | (Blank) | (blank) |
| 9 | Rigner Stefansson | 31 | Head | Meat Cutter | Iceland |
| 10 | Mildred E. Stefansson | 21 | Wife | — | Maryland |
| 11 | David R. Stefansson | 2 | Son | — | Maryland |
| 12 | Augusta Burch | 70 | Lodger | — | Virginia |
| 13 | George W. Merson | 57 | Head | Clerk | Maryland |
| 14 | Eva C. Merson | 54 | Wife | — | Maryland |
| 15 | George Herbert Merson | 22 | Son | Shipping Clerk | Maryland |
| 16 | Helen C. Merson | 16 | Daughter | — | Maryland |
| 17 | Virginia M. Serps | 60 | Head | — | Maryland |
| 18 | Edward A. Bernhard | 35 | Head | Machinist | Maryland |
| 19 | Lillian L. Bernhard | 39 | Wife | — | Maryland |
| 20 | Marion E. Owens | 13 | Step-son | — | Maryland |
| 21 | Lillie M. Feick | 44 | Head | — | Maryland |
| 22 | Eugenia Feick | 30 | Daughter | Stenographer | Maryland |
| 23 | Raymond W. Feick | 29 | Son | Auditor | Maryland |
| 24 | Carl W. Feick | 27 | Son | Painter | Maryland |
| 25 | Margaret A. Mccafferty | 41 | Head | Nurse | Pennsylvania |
| 26 | Josephine M. Gonkley | 40 | Lodger | Nurse | Ireland |
| 27 | Sadie M. Gonkley | 35 | Lodger | Nurse | Maryland |
| 28 | Annie K. Koch | 70 | Head | — | Germany |
| 29 | Paul R. Koch | 40 | Son | Lawyer | Maryland |
| 30 | George M. Pollock | 26 | Head | Cake Salesman | Maryland |
| 31 | Julia E. Pollock | 24 | Wife | Waitress | Maryland |
| 32 | Harry L. Clark | 59 | Head | Salesman | Maryland |
| 33 | Amelia E. Clark | 54 | Wife | Dressmaker | Washington D.C. |
| 34 | William J. Summerman | 75 | Head | — | New Jersey |
| 35 | Wilbur L. Schwartz | 41 | Lodger | Electrician | Maryland |
| 36 | Ella M. Schwartz | 41 | Lodger | Stenographer | New Jersey |
| 37 | John F. Schwartz THIS PERSON | 69 | Head | Salesman | Maryland |
| 38 | Emma L. Schwartz | 61 | Wife | — | Maryland |
| 39 | Helen M. Schwartz | 42 | Daughter | Clerk | Maryland |
| 40 | Frederick B. Pyle | 72 | Head | — | Maryland |
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)