WS
William Shaffer — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Baltimore, Maryland
Our Model Tree links this William Shaffer across the 1930 and 1940 US Censuses in Baltimore, Maryland (XGBoost, ~Confirmed) — first a head (b.~1899), then head of a 7-person household.
Age 31
b. ~1899
Male
Head
Born: Maryland
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Baltimore, Maryland |
| Surname | Shaffer |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 21 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Additional Details | |
| Occupation | Laborer |
| Industry | Steel Mill |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 18 |
| Radio Set | R |
| Veteran | No |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Laborer |
| Township / Ward | Baltimore City |
| 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 1930 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Natalie Shaffer | Spouse | — | 29 | ~1901 |
| Thelma Shaffer | Daughter | — | 4 | ~1926 |
| William Shaffer | Head | — | 31 | ~1899 |
| Marie Shaffer | Daughter | — | 5 | ~1925 |
| Geneveve Shaffer | Daughter | — | 7 | ~1923 |
| William Shaffer | Daughter | — | 2 | ~1928 |
| Charles Shaffer | Son | — | 7 | ~1923 |
Census Appearances
1930
Baltimore, Maryland
Head, age 31
Baltimore, Maryland · implied b. ~1899 — 7 household members
| Surname | Shaffer |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 21 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Laborer |
| Industry | Steel Mill |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 18 |
| Radio Set | R |
| Veteran | No |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Head, age 41
Baltimore-City-County, Maryland · implied b. ~1899 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Schaffer |
| Given Name | William F. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Occupation | Police officer |
| Industry | City |
| Class of Worker | GW |
| Hours Worked | 60 |
| Income (1939) | 1800 |
| Highest Grade | No 7 |
| 1935 Residence | Same house |
| 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 William Shaffer across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
William Shaffer
Head · 1930 · age 31 · b. ~1899 · Maryland
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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:1930:15thcensus863unit:1088)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Augusta Schleicher | 70 | Head | — | Germany |
| 52 | Arthur Buepke | 27 | Head | Carpenter | Maryland |
| 53 | Anna Buepke | 20 | Wife | — | Maryland |
| 54 | Randolph Buepke | 1 | Son | — | Maryland |
| 55 | Bernhardt Rehrmann | 25 | Head | Clerk | Maryland |
| 56 | Ernest Rehrmann | 23 | Brother | — | Maryland |
| 57 | Frederick Newton | 36 | Head | Helper | Maryland |
| 58 | Esther Newton | 30 | Wife | — | Maryland |
| 59 | Louise Newton | 11 | Daughter | — | Maryland |
| 60 | Mable Newton | 9 | Daughter | — | Maryland |
| 61 | Dorothy Newton | 7 | Daughter | — | Maryland |
| 62 | Mary Newton | 63 | Mother | — | Maryland |
| 63 | Raymond Newton | 18 | Brother | — | Maryland |
| 64 | Theodore Koch | 43 | Head | Laborer | Maryland |
| 65 | Elizabeth Koch | 38 | Wife | — | Maryland |
| 66 | Agnes E Koch | 18 | Daughter | — | Maryland |
| 67 | Anna F Koch | 14 | Daughter | — | Maryland |
| 68 | Margaret E Koch | 9 | Daughter | — | Maryland |
| 69 | Edward Koch | 6 | Son | — | Maryland |
| 70 | William Shaffer THIS PERSON | 31 | Head | Laborer | Maryland |
| 71 | Natalie Shaffer | 29 | Wife | — | Maryland |
| 72 | Charles Shaffer | 7 | Son | — | Maryland |
| 73 | Geneveve Shaffer | 7 | Daughter | — | Maryland |
| 74 | Marie Shaffer | 5 | Daughter | — | Maryland |
| 75 | Thelma Shaffer | 4 | Daughter | — | Maryland |
| 76 | William Shaffer | 2 | Daughter | — | Maryland |
| 77 | Clarence Fisher | 40 | Head | Laborer | Pennsylvania |
| 78 | Edna Fisher | 26 | Wife | — | Maryland |
| 79 | Thelma Fisher | 5 | Daughter | — | Maryland |
| 80 | William Fisher | 3 | Son | — | Maryland |
| 81 | Mary Rider | 71 | Head | — | Maryland |
| 82 | Clarence F Rider | 17 | Boarder | — | Maryland |
| 83 | Edward Levenson | 24 | Head | Laborer | Maryland |
| 84 | Hazel Levenson | 23 | Wife | — | Maryland |
| 85 | Burton Levenson | 3 | Son | — | Maryland |
| 86 | Charles Miller | 36 | Head | Laborer | Maryland |
| 87 | Jane Miller | 36 | Wife | — | Maryland |
| 88 | Augustus Volandt | 14 | Son | — | Maryland |
| 89 | Lydia Volandt | 11 | Daughter | — | Maryland |
| 90 | Melva Volandt | 8 | Daughter | — | Maryland |
| 91 | Roy Hanke | 36 | Head | Carpenter | Virginia |
| 92 | Annie Hanke | 31 | Wife | — | Maryland |
| 93 | Roy Hanke | 11 | Son | — | Maryland |
| 94 | Charlotte Hanke | 9 | Daughter | — | Maryland |
| 95 | Doris Hanke | 8 | Daughter | — | Maryland |
| 96 | Gordon Hanke | 6 | Son | — | Maryland |
| 97 | Thomas Hanke | 5 | Son | — | Maryland |
| 98 | George Wideman | 54 | Head | Steam Fitter | Maryland |
| 99 | Ruth Wideman | 39 | Wife | — | Maryland |
| 100 | Anna Dietz | 16 | Daughter | — | 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)