RH
Robert Hoffman — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Baltimore, Maryland
Our Model Tree links this Robert Hoffman across the 1930 and 1940 US Censuses in Baltimore, Maryland (XGBoost, ~Confirmed) — first a son (b.~1922), then head of a 11-person household.
Age 8
b. ~1922
Male
Son
Born: Maryland
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Baltimore, Maryland |
| Surname | Hoffman |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1922 |
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.
11 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Helen Hoffman | Daughter | — | 6 | ~1924 |
| Margaret Hoffman | Daughter | — | 10 | ~1920 |
| Dorothy Hoffman | Daughter | — | 4 | ~1926 |
| Sarah Hoffman | Spouse | — | 42 | ~1888 |
| Ruth Hoffman | Daughter | — | 2 | ~1928 |
| Robert Hoffman | Son | — | 8 | ~1922 |
| John Hoffman | Head | — | 45 | ~1885 |
| John Hoffman | Son | — | 15 | ~1915 |
| James Hoffman | Son | — | 1 | ~1929 |
| William Hoffman | Son | — | 13 | ~1917 |
| Anna Hoffman | Daughter | — | 18 | ~1912 |
Census Appearances
1930
Baltimore, Maryland
Son, age 8
Baltimore, Maryland · implied b. ~1922 — 11 household members
| Surname | Hoffman |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Can Read/Write | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Son, age 17
Baltimore-City-County, Maryland · implied b. ~1923 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Huffman |
| Given Name | Robert Q |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Occupation | waiter |
| Industry | cleaner |
| Class of Worker | PW |
| Hours Worked | 54 |
| Income (1939) | 496 |
| Highest Grade | H 3 |
| 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 Robert Hoffman across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Hoffman
Son · 1930 · age 8 · b. ~1922 · Maryland
★ You are viewing this record
Sibling
Anna Hoffman
Sibling · 1930 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Hoffman
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Hoffman
Sibling · 1930 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Hoffman
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Hoffman
Sibling · 1930 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Hoffman
Sibling · 1930 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Hoffman
Sibling · 1930 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Hoffman
Sibling · 1930 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
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
20 people indexed on this census page (ia:1930:15thcensus852unit:0368)
| Line | Name | Age | Relation | Birthplace |
|---|---|---|---|---|
| 51 | Francis Vought | 25 | — | Maryland |
| 52 | John R Vought | 23 | — | Maryland |
| 55 | Guiseppe Salerno | 45 | Head | Italy |
| 56 | Salerno | None | — | — |
| 57 | Nils Hansen | 50 | Head | Norway |
| 58 | Hansen | None | — | — |
| 77 | John Hoffman | 45 | Head | Maryland |
| 78 | Sarah Hoffman | 42 | Wife | Maryland |
| 79 | Anna Hoffman | 18 | Daughter | Maryland |
| 80 | John Hoffman | 15 | Son | Maryland |
| 81 | William Hoffman | 13 | Son | Maryland |
| 82 | Margaret Hoffman | 10 | Daughter | Maryland |
| 83 | Robert Hoffman THIS PERSON | 8 | Son | Maryland |
| 84 | Helen Hoffman | 6 | Daughter | Maryland |
| 85 | Dorothy Hoffman | 4 | Daughter | Maryland |
| 86 | Ruth Hoffman | 2 | Daughter | Maryland |
| 87 | James Hoffman | 1 | Son | Maryland |
| 98 | George Rickenwald | 43 | Head | Maryland |
| 99 | Rose Rickenwald | 43 | Wife | Maryland |
| 100 | George Rickenwald | 17 | Son | Maryland |
Related Census Records
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)