RH
Robert Hoffman — 1920 US Census Record
Linked across censuses1920 United States Federal Census · Rock Island, Illinois
Our Model Tree links this Robert Hoffman across the 1920, 1930 and 1940 US Censuses in Rock Island, Illinois (XGBoost, ~Confirmed) — first a head (b.~1859), then head of a 3-person household.
Age 61
b. ~1859
Male
Head
Born: Illinois
Married
1920 Census Record Details
| Census Year | 1920 |
| Location | Rock Island, Illinois |
| Surname | Hoffman |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 61 |
| Marital Status | Married |
| Birthplace | Illinois |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Additional Details | |
| Occupation | Real Estate |
| Industry | Real Estate Co. |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | German |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
| Occupation | Real Estate |
| Township / Ward | Rock Island City |
| Est. Birth Year | ~1859 |
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 1920 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Marie Hoffman | Other | — | 35 | ~1885 |
| Robert Hoffman | Head | — | 61 | ~1859 |
| Stewart Hoffman | Son | — | 32 | ~1888 |
Census Appearances
1920
Rock Island, …
Head, age 61
Rock Island, Illinois · implied b. ~1859 — 3 household members
| Surname | Hoffman |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 61 |
| Marital Status | Married |
| Birthplace | Illinois |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Real Estate |
| Industry | Real Estate Co. |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | German |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1930
Rock Island, …
Other, age 72
Rock Island, Illinois · implied b. ~1858 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hoffman |
| Given Name | Robert |
| Relationship to Head | Lodger |
| Sex | M |
| Color / Race | White |
| Age | 72 |
| Marital Status | Widowed |
| Birthplace | Illinois |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
1940
Rock-Island-County, Illinois
Other, age 81
Rock-Island-County, Illinois · implied b. ~1859 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hoffman |
| Given Name | Robert |
| Relationship to Head | Lodger |
| Sex | M |
| Color / Race | White |
| Age | 81 |
| Marital Status | Widowed |
| Birthplace | Illinois |
| 1935 Residence (City) | Rock Island City |
| 1935 Residence (County) | Rock Island |
| Industry | 0 |
| Class of Worker | PW |
| Income (1939) | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Illinois |
| Birth Country | United States |
| Birthplace (normalized) | illinois |
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 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Hoffman
Head · 1920 · age 61 · b. ~1859 · Illinois
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1920 US Federal Census — Rock Island, Illinois
Open full size
1920 US Federal Census — Rock Island, Illinois
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu403unit:0073)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Reuban Dallman | 66 | Head | Blacksmith | Pennsylvania |
| 2 | Mary B. Dallman | 56 | Wife | — | Scotland |
| 3 | Mary Stubley | 39 | Roomer | Dressmaker | Sweden |
| 4 | Clarence B. Jones | 34 | Head | Billing Clerk | Illinois |
| 5 | Ruth Jones | 34 | Wife | — | Illinois |
| 6 | Eugene Jones | 4 | Daughter | — | Illinois |
| 7 | Eva L. Foote | 52 | Head | — | Illinois |
| 8 | Marguerite Foote | 29 | Daughter | Stenographer | Illinois |
| 9 | Julia L. Berry | 42 | Roomer | Stenographer | Illinois |
| 10 | Mary L. Stewart | 25 | Roomer | Stenographer | Illinois |
| 11 | Susan Benson | 75 | Head | — | Pennsylvania |
| 12 | Louis Andish | 32 | Head | Merchant | Poland |
| 13 | Sadie Andish | 28 | Wife | — | Poland |
| 14 | Mamie Andish | 9 | Daughter | — | Illinois |
| 15 | Alice Andish | 2 | Daughter | — | Illinois |
| 16 | Frank Bauerfield | 27 | Head | Manager | Illinois |
| 17 | Dorothy Bauerfield | 25 | Wife | — | Illinois |
| 18 | Eleanor Mccormick | 54 | Head | — | Iowa |
| 19 | Andrew J. Mccormick | 30 | Son | Electrician | Iowa |
| 20 | Henry W. Mccormick | 23 | Son | Chauffeur | Iowa |
| 21 | Isabella Mccormick | 15 | Daughter | — | Iowa |
| 22 | Robert Hoffman THIS PERSON | 61 | Head | Real Estate | Illinois |
| 23 | Stewart Hoffman | 32 | Son | Foreman | Illinois |
| 24 | Marie Hoffman | 35 | Daughter-in-law | — | Illinois |
| 25 | Charles L. Hazard | 62 | Head | — | Ohio |
| 26 | Marion Hazard | 54 | Wife | — | New York |
| 27 | Helen Hazard | 24 | Daughter | — | Illinois |
| 28 | Lucille Hazard | 21 | Daughter | Teacher | Illinois |
| 29 | Ralph R. Clark | 39 | Head | Manager | Missouri |
| 30 | Pearl L. Clark | 40 | Wife | — | Missouri |
| 31 | Julian Clark | 15 | Son | — | Missouri |
| 32 | Adrienne Clark | 13 | Daughter | — | Oklahoma |
| 33 | Cyril Clark | 8 | Son | — | Oklahoma |
| 34 | Lyle Clark | 5 | Son | — | Illinois |
| 35 | Dolores Clark | 3 | Daughter | — | Illinois |
| 36 | J. L. Prisk | 49 | Head | Machinist | Illinois |
| 37 | Alberta Prisk | 48 | Wife | — | Illinois |
| 38 | Max Wolff | 25 | Son-in-law | Mechanic | Illinois |
| 39 | Grace Wolff | 24 | Daughter | — | Illinois |
| 40 | Elynor Wadsworth | 70 | Head | — | Iowa |
| 41 | Axel R. Anderson | 37 | Head | Machine Operator | Illinois |
| 42 | Lou Anderson | 29 | Wife | — | Minnesota |
| 43 | Gabrielle Anderson | 4 | Daughter | — | Minnesota |
| 44 | Thomas Tatum | 37 | Head | Toolmaker | Illinois |
| 45 | Marion Tatum | 37 | Wife | — | Illinois |
| 46 | William H. Mcconochie | 57 | Head | Contractor | Illinois |
| 47 | Edith Mcconochie | 47 | Wife | — | Illinois |
| 48 | Florence Mcconochie | 20 | Daughter | — | Illinois |
| 49 | Wm. R. Mcconochie | 13 | Son | — | Illinois |
| 50 | Robert Mcconochie | 51 | Head | Machinist | Illinois |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 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)