JB
John Ball — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this John Ball across the 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed) — first a head (b.~1895), then head of a 10-person household.
Age 45
b. ~1895
Male
Head
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Ball |
| Given Name | John E. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Additional Details | |
| Occupation | Merchant |
| Industry | Grocery Store |
| Class of Worker | OA |
| Hours Worked | 70 |
| Income (1939) | 1200 |
| Highest Grade | No 7 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Merchant |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1895 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Elizabeth Ball | Daughter | — | 5 | ~1935 |
| Ruth Ball | Daughter | — | 2 | ~1938 |
| Marjorie Ball | Daughter | — | 18 | ~1922 |
| Juanita Ball | Daughter | — | 17 | ~1923 |
| John Ball | Head | — | 45 | ~1895 |
| Henry Stone | Other | — | 62 | ~1878 |
| Ellen Stone | Other | — | 62 | ~1878 |
| John Ball | Son | — | 11 | ~1929 |
| Henry Ball | Son | — | 8 | ~1932 |
| Catherine Ball | Spouse | — | 38 | ~1902 |
Census Appearances
1930
Baltimore, Maryland
Head, age 35
Baltimore, Maryland · implied b. ~1895 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Ball |
| Given Name | John H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 28 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Tin Plate Polisher |
| Industry | Tin Mill |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 25.00 |
| Radio Set | R |
| Veteran | No |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Head, age 45
Baltimore-City-County, Maryland · implied b. ~1895 — 10 household members
| Surname | Ball |
| Given Name | John E. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 45 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Occupation | Merchant |
| Industry | Grocery Store |
| Class of Worker | OA |
| Hours Worked | 70 |
| Income (1939) | 1200 |
| Highest Grade | No 7 |
| 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 Ball across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Ball
Head · 1940 · age 45 · b. ~1895 · Maryland
★ You are viewing this record
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-t0627-01531-00623)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Charles C. Griffin | 42 | Head | Pipe Fitter | Maryland |
| 2 | Martha M. Griffin | 39 | Wife | — | Maryland |
| 3 | Thelma M. Griffin | 19 | Daughter | Operator | Maryland |
| 4 | William C. Griffin | 18 | Son | — | Maryland |
| 5 | George W. Beck | 49 | Head | Metal Worker | Maryland |
| 6 | Margaret I. Beck | 37 | Wife | — | Maryland |
| 7 | June M. Beck | 8 | Daughter | — | Maryland |
| 8 | Florence M. Dembrowsky | 44 | Head | Maid | Maryland |
| 9 | Ruth E. Dembrowsky | 15 | Daughter | — | Maryland |
| 10 | Charles R. Knightheart | 37 | Head | Clerk | Maryland |
| 11 | Loretta Knightheart | 33 | Wife | — | Maryland |
| 12 | Charles W. Knightheart | 8 | Son | — | Maryland |
| 13 | Albert Lang | 35 | Lodger | Liner | Maryland |
| 14 | Basil A. Helm | 26 | Head | Clerk | Maryland |
| 15 | Pearl M. Helm | 23 | Wife | — | Maryland |
| 16 | Grace E. Helm | 4 | Daughter | — | Maryland |
| 17 | William F. Craver | 19 | Lodger | — | Maryland |
| 18 | Ida M. Craver | 19 | Lodger | — | Maryland |
| 19 | Arlene J. Craver | 0 | Lodger | — | Maryland |
| 20 | Royce C. Carr | 55 | Head | Engineer | Maryland |
| 21 | Clara L. Carr | 55 | Wife | — | Maryland |
| 22 | T. N. Herman Carr | 23 | Son | Air Plane Work | Maryland |
| 23 | Amos C. Magalis | 46 | Head | Brakeman | Maryland |
| 24 | Pearl C. Magalis | 46 | Wife | — | Maryland |
| 25 | Harriet C. Magalis | 25 | Daughter | Clerk | Maryland |
| 26 | Dean C. Magalis | 20 | Son | Stock Clerk | Maryland |
| 27 | Walter L. Magalis | 15 | Son | — | Maryland |
| 28 | John E. Ball THIS PERSON | 45 | Head | Merchant | Maryland |
| 29 | Catherine M. Ball | 38 | Wife | — | Maryland |
| 30 | Marjorie C. Ball | 18 | Daughter | Fire Lady | Maryland |
| 31 | Juanita E. Ball | 17 | Daughter | Packer | Maryland |
| 32 | John E. Ball | 11 | Son | — | Maryland |
| 33 | Henry W. Ball | 8 | Son | — | Maryland |
| 34 | Elizabeth C. Ball | 5 | Daughter | — | Maryland |
| 35 | Ruth L. Ball | 2 | Daughter | — | Maryland |
| 36 | Henry B. Stone | 62 | Father | Huckster | Maryland |
| 37 | Ellen E. Stone | 62 | Mother | — | Maryland |
| 38 | Casper J. Betz | 56 | Head | Car Repair | Maryland |
| 39 | Rosa M. Betz | 47 | Wife | — | Maryland |
| 40 | John J. Betz | 17 | Son | Errand Boy | 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)