RB
Robert Ball — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Pierce-County, Washington
Our Model Tree links this Robert Ball across the 1910, 1920, 1930 and 1940 US Censuses in Pierce-County, Washington (XGBoost, ~Confirmed) — first a head (b.~1868), then head of a 3-person household.
Age 72
b. ~1868
Male
Head
Born: Pennsylvania
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Pierce-County, Washington |
| Surname | Ball |
| Given Name | Robert O. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 72 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Tacoma |
| 1935 Residence (County) | Pierce |
| Additional Details | |
| Occupation | Physician |
| Industry | Private Practice |
| Class of Worker | OA |
| Hours Worked | 45 |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same house |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Physician |
| Township / Ward | Tacoma |
| Est. Birth Year | ~1868 |
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 Robert | Age | Birth yr |
|---|---|---|---|---|
| Bethel Smith | Daughter | — | 44 | ~1896 |
| Jessie Ball | Spouse | — | 69 | ~1871 |
| Robert Ball | Head | — | 72 | ~1868 |
Census Appearances
1910
Pierce, Washington
Head, age 42
Pierce, Washington · implied b. ~1868 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Ball |
| Given Name | Robert W |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Years Married | 17 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Contractor |
| Industry | Real Estate |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1920
Pierce, Washington
Head, age 51
Pierce, Washington · implied b. ~1869 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Ball |
| Given Name | Robert S. |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Business Manager |
| Industry | Newspaper |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Pierce, Washington
Head, age 62
Pierce, Washington · implied b. ~1868 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Ball |
| Given Name | Robert Q |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 62 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Age at First Marriage | 25 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Physician & Surgeon |
| Industry | Professional |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 3500 |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Pierce-County, Washington
Head, age 72
Pierce-County, Washington · implied b. ~1868 — 3 household members
| Surname | Ball |
| Given Name | Robert O. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 72 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Tacoma |
| 1935 Residence (County) | Pierce |
| Occupation | Physician |
| Industry | Private Practice |
| Class of Worker | OA |
| Hours Worked | 45 |
| Income (1939) | 0 |
| Highest Grade | 8 |
| 1935 Residence | Same house |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 Robert Ball across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Ball
Head · 1940 · age 72 · b. ~1868 · Washington
★ 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 — Pierce-County, Washington
Open full size
1940 US Federal Census — Pierce-County, Washington
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04388-00913)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Roy W Stambaugh | 54 | Head | Locomotive Engineer | Nebraska |
| 42 | Miriam A Stambaugh | 46 | Wife | — | England |
| 43 | Robert W Stambaugh | 24 | Son | — | Washington |
| 44 | Arthur J. D. Perkins | 65 | Head | Laborer Gardener | Iowa |
| 45 | Mary P. Perkins | 65 | Wife | Gardener | Iowa |
| 46 | Edward Michel | 31 | Head | Church Visitor | Washington |
| 47 | Ruth E Michel | 34 | Wife | Pharmacist | Washington |
| 48 | Edward B Luing | 42 | Head | Secretary And Manager | Pennsylvania |
| 49 | Velma V. Luing | 45 | Wife | — | Oregon |
| 50 | Mary J. Clement | 86 | Mother-in-law | — | Oregon |
| 51 | Rowena Trissm | 58 | Sister-in-law | Secretary | Oregon |
| 52 | Alfred A. Youngberg | 38 | Head | Building Contractor | Michigan |
| 53 | Naomi B. Youngberg | 35 | Wife | — | Washington |
| 54 | Dorothea Youngberg | 2 | Daughter | — | Washington |
| 55 | Robert O. Ball THIS PERSON | 72 | Head | Physician | Pennsylvania |
| 56 | Jessie C. Ball | 69 | Wife | — | Ohio |
| 57 | Bethel J. Smith | 44 | Daughter | — | Washington |
| 58 | William N. Brown | 38 | Head | Teacher | Washington |
| 59 | Frances M. Brown | 36 | Wife | — | Washington |
| 60 | Minoru Nakawara | 19 | Servant | House Boy | Washington |
| 61 | Joseph Boila | 28 | Head | Butcher | North Dakota |
| 62 | Eleanor Boila | 26 | Wife | — | Washington |
| 63 | Joseph F. Megery | 45 | Head | Machine Shop Foreman | Washington |
| 64 | Victoria Megery | 44 | Wife | — | Michigan |
| 65 | John Megery | 3 | Son | — | Washington |
| 66 | Muriel M. Rickard | 22 | Daughter | Stenographer | Minnesota |
| 67 | Martha Weisenbach | 59 | Head | — | England |
| 68 | Henry F. Naegel | 75 | Lodger | — | Missouri |
| 69 | John Haller | 71 | Lodger | Farmer | Sweden |
| 70 | Elmer P. Hanson | 56 | Head | Car Loader | Sweden |
| 71 | Alma J. Hanson | 58 | Wife | — | Sweden |
| 72 | Lyle Herberholz | 29 | Head | Delivery Man | Washington |
| 73 | Wanna M. Herberholz | 25 | Wife | — | Washington |
| 74 | Guy N. Hartle | 41 | Head | Foreman | Oregon |
| 75 | R. Faye Hartle | 37 | Wife | — | Oklahoma |
| 76 | Dorothea W. Hartle | 15 | Daughter | — | Oregon |
| 77 | Gloria Q. Hartle | 2 | Daughter | — | Washington |
| 78 | Charles J. Ita | 48 | Head | Shipping Clerk | Washington |
| 79 | Elma Ita | 44 | Wife | Bookkeeper | Wisconsin |
| 80 | Clifford Paulson | 29 | Head | Manager | Washington |
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)