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Mary Ball — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Philadelphia-County, Pennsylvania
Our Model Tree links this Mary Ball across the 1920, 1930 and 1940 US Censuses in Philadelphia-County, Pennsylvania (XGBoost, ~Confirmed) — first a spouse (b.~1899), then head of a 7-person household.
Age 41
b. ~1899
Female
Spouse
Born: Georgia
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Philadelphia-County, Pennsylvania |
| Surname | Ball |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Georgia |
| 1935 Residence (City) | Philadelphia |
| 1935 Residence (County) | Philadelphia |
| Additional Details | |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Georgia |
| Birth Country | United States |
| Birthplace (normalized) | georgia |
| Township / Ward | Philadelphia |
| Est. Birth Year | ~1899 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Idrie Ball | Daughter | — | 19 | ~1921 |
| Gladys Ball | Daughter | — | 16 | ~1924 |
| James Ball | Son | — | 12 | ~1928 |
| Samuel Ball | Son | — | 17 | ~1923 |
| Horace Ball | Son | — | 11 | ~1929 |
| Joe Ball | Son | — | 4 | ~1936 |
| Mary Ball | Spouse | — | 41 | ~1899 |
Census Appearances
1920
Philadelphia, Pennsylvania
Spouse, age 20
Philadelphia, Pennsylvania · implied b. ~1900
●
Primary link
· ~Confirmed · 1 source
XGBoost
| Surname | Ball |
| Given Name | Mary A. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 20 |
| Marital Status | Married |
| Birthplace | Georgia |
| Father's Birthplace | Florida |
| Mother's Birthplace | Georgia |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Georgia |
| Birth Country | United States |
| Birthplace (normalized) | georgia |
1930
Philadelphia, Pennsylvania
Spouse, age 31
Philadelphia, Pennsylvania · implied b. ~1899 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Ball |
| Given Name | Mary A. |
| Relationship to Head | wife |
| Sex | F |
| Color / Race | Black |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Georgia |
| Age at First Marriage | 19 |
| Father's Birthplace | Florida |
| Mother's Birthplace | Georgia |
| Occupation | dressmaker |
| Industry | at home |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Georgia |
| Birth Country | United States |
| Birthplace (normalized) | georgia |
1940
Philadelphia-County, Pennsylvania
Spouse, age 41
Philadelphia-County, Pennsylvania · implied b. ~1899 — 7 household members
| Surname | Ball |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | Black |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Georgia |
| 1935 Residence (City) | Philadelphia |
| 1935 Residence (County) | Philadelphia |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Georgia |
| Birth Country | United States |
| Birthplace (normalized) | georgia |
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 Mary Ball across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Mary Ball
Spouse · 1940 · age 41 · b. ~1899 · Pennsylvania
★ 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 — Philadelphia-County, Pennsylvania
Open full size
1940 US Federal Census — Philadelphia-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03698-00603)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mary Ball THIS PERSON | 41 | Wife | — | Georgia |
| 2 | Idrie Ball | 19 | Daughter | — | Penna |
| 3 | Samuel Jr Ball | 17 | Son | — | Penna |
| 4 | Gladys Ball | 16 | Daughter | — | Penna |
| 5 | James Ball | 12 | Son | — | Penna |
| 6 | Horace Ball | 11 | Son | — | Penna |
| 7 | Joe Louis Ball | 4 | Son | — | Penna |
| 8 | Samuel Grubb | 72 | Head | — | Penna |
| 9 | Mary Grubb | 62 | Wife | — | Mass |
| 10 | Mary Berdick | 57 | Head | — | Hungary |
| 11 | Ernst Berdick | 17 | Son | Polisher | Penna |
| 12 | Gene Lukas | 19 | Lodger | Packer | Penna |
| 13 | Rubin Lukas | 21 | Lodger | Packer | Penna |
| 14 | Bridget Carney | 78 | Head | — | Irish Free State |
| 15 | Catherine Carney | 44 | Daughter | Wrapper | Penna |
| 16 | Helen Carney | 41 | Daughter | Stenographer | Penna |
| 17 | Frank O'Callahan | 59 | Brother | Clerk | Irish Free State |
| 18 | Nora Collins | 53 | Head | — | Penna |
| 19 | Mary Collins | 49 | Sister | Dress Maker | Penna |
| 20 | Katherine Collins | 47 | Sister | Secretary | Penna |
| 21 | Elroy Baines | 33 | Head | Car Washer | N. Car |
| 22 | Theo Baines | 29 | Wife | — | N. Car |
| 23 | Earl Baines | 15 | Son | — | Penna |
| 24 | Anna Lou Johnson | 43 | Lodger | Wash Operator | S. Car |
| 25 | Trumeela Walker | 23 | Lodger | Domestic | New Jersey |
| 26 | Russell Barber | 37 | Lodger | Laborer | Va |
| 27 | Mary Barber | 30 | Lodger | — | Va |
| 28 | Cecil Johnson | 28 | Lodger | Bag Maker | Va |
| 29 | Lawrence Payne | 29 | Lodger | Truck Driver | Penna |
| 30 | Frank Dyson | 40 | Head | Baker | S. Carolina |
| 31 | Josephine Dyson | 43 | Wife | — | Virginia |
| 32 | Carrie Karnegie | 26 | Step Daughter | Domestic | N. Carolina |
| 33 | Herman Dyson | 9 | Son | — | Penna |
| 34 | Samuel Willingham | 55 | Lodger | Laborer | S. Carolina |
| 35 | Bertha Willingham | 48 | Lodger | — | S. Carolina |
| 36 | Maggie Long | 42 | Lodger | Domestic | S. Carolina |
| 37 | Josephine Thomas | 45 | Head | Spiritualist | Virginia |
| 38 | Jack Herman Robinson | 23 | Son | — | Virginia |
| 39 | Hattie Wright | 25 | Lodger | Table Girl | S. Carolina |
| 40 | John Owens | 30 | Lodger | Laborer | S. Carolina |
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)