RA
Robert Alexander — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Salt Lake, Utah
Our Model Tree links this Robert Alexander across the 1920, 1930 and 1940 US Censuses in Salt Lake, Utah (XGBoost, ~Confirmed) — first a head (b.~1889), then head of a 4-person household.
Age 41
b. ~1889
Male
Head
Born: Utah
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Salt Lake, Utah |
| Surname | Alexander |
| Given Name | Robert J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Utah |
| Age at First Marriage | 27 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Additional Details | |
| Occupation | Physician |
| Industry | General Practice |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 60 |
| Radio Set | R |
| Veteran | Yes |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
| Occupation | Physician |
| Township / Ward | Salt Lake City |
| Est. Birth Year | ~1889 |
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.
4 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Isabell Alexander | Daughter | — | 17 | ~1913 |
| Robert Alexander | Head | — | 41 | ~1889 |
| Dorothy Alexander | Other | — | 37 | ~1893 |
| William Alexander | Son | — | 19 | ~1911 |
Census Appearances
1920
Salt Lake, …
Head, age 32
Salt Lake, Utah · implied b. ~1888 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Alexander |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Utah |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Physician & Surgeon |
| Industry | Medical |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
1930
Salt Lake, …
Head, age 41
Salt Lake, Utah · implied b. ~1889 — 4 household members
| Surname | Alexander |
| Given Name | Robert J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Utah |
| Age at First Marriage | 27 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Occupation | Physician |
| Industry | General Practice |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 60 |
| Radio Set | R |
| Veteran | Yes |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
1940
Salt-Lake-County, Utah
Head, age 52
Salt-Lake-County, Utah · implied b. ~1888 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Alexander |
| Given Name | Robt. J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Utah |
| 1935 Residence (City) | Salt Lake City |
| 1935 Residence (County) | Salt Lake |
| Occupation | Surgeon |
| Industry | Medical |
| Class of Worker | OA |
| Income (1939) | 0 |
| Highest Grade | C 4 |
| 1935 Residence | Same Place |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
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 Alexander across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Alexander
Head · 1930 · age 41 · b. ~1889 · Utah
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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 — Salt Lake, Utah
Open full size
1930 US Federal Census — Salt Lake, Utah
Page Contents
50 people indexed on this census page (ia:1930:15thcensus2418unit:0644)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Roland G. Shepherd | 2 | Grandson | — | Utah |
| 2 | Charlyl Lewis | 25 | Son | Miner | Utah |
| 3 | Frank Lewis | 23 | Son | Miner | Utah |
| 4 | Robert J. Alexander THIS PERSON | 41 | Head | Physician | Utah |
| 5 | Dorothy Alexander | 37 | Wife-H | — | Utah |
| 6 | William C. Alexander | 19 | Son | — | Utah |
| 7 | Isabell Alexander | 17 | Daughter | — | Utah |
| 8 | Charles Samuel | 51 | Head | Manager | Texas |
| 9 | Clara Samuel | 45 | Wife-H | — | Colorado |
| 10 | Charles Jr. Samuel | 21 | Son | Helper | Colorado |
| 11 | Eloise Samuel | 16 | Daughter | — | Colorado |
| 12 | Marion Samuel | 14 | Daughter | — | California |
| 13 | Clara Samuel | 10 | Daughter | — | Utah |
| 14 | William E. Kerr | 25 | Head | Banker | Utah |
| 15 | Dorothy Kerr | 23 | Wife-H | — | Utah |
| 16 | Robert W. Kerr | 1 | Son | — | Utah |
| 17 | James F. Pennel | 34 | Head | Mechanic | North Carolina |
| 18 | Venus Pennel | 25 | Wife-H | — | Utah |
| 19 | Agusta C. Lohman | 60 | Head | — | Germany |
| 20 | Frank Lohman | 19 | Son | — | Utah |
| 21 | Margaret Wrigley | 31 | Daughter | Stenographer | Utah |
| 22 | Adolph Hofman | 58 | Head | Dressmaker | Kansas |
| 23 | Adramore Paul E. Hofman | 29 | Son | Tailor | Missouri |
| 24 | Mary E. Erickson | 75 | Head | — | Utah |
| 25 | John M. Painter | 62 | Head | Cabinet Maker | Minnesota |
| 26 | Jennie Painter | 50 | Wife-H | — | Minnesota |
| 27 | Frank Jensen | 45 | Head | Buyer | Idaho |
| 28 | Maud Jensen | 43 | Wife-H | — | Idaho |
| 29 | La Monte Jensen | 20 | Son | Buyer | Idaho |
| 30 | Helen Jensen | 16 | Daughter | — | Idaho |
| 31 | Grisel Jensen | 14 | Son | — | Idaho |
| 32 | Phyllis Jensen | 12 | Daughter | — | Idaho |
| 33 | Lorraine Jensen | 10 | Daughter | — | Idaho |
| 34 | Maxine Jensen | 8 | Daughter | — | Idaho |
| 35 | Barbara Jensen | 5 | Daughter | — | Utah |
| 36 | Douglas Jensen | 1 | Son | — | Utah |
| 37 | Leo Jorgensen | 24 | Head | Clerk | Utah |
| 38 | Helen Jorgensen | 27 | Wife-H | — | Montana |
| 39 | Leo Jr. Jorgensen | 1 | Son | — | Utah |
| 40 | James W. Jensen | 46 | Head | Wholesaler | Utah |
| 41 | Emma Jensen | 46 | Wife-H | — | Idaho |
| 42 | Herman Jensen | 18 | Son | Laborer | Utah |
| 43 | James A. Mchale | 33 | Head | Manager | Montana |
| 44 | Margret Mchale | 30 | Wife-H | — | Utah |
| 45 | Mitchell Shanter | 50 | Head | Cabinet Maker | Minnesota |
| 46 | Robert O. Shanter | 17 | Son | — | Utah |
| 47 | Lawrence R. Shanter | 15 | Son | — | Utah |
| 48 | Hannah Schrana | 59 | Sister | — | Minnesota |
| 49 | Alton Clark | 25 | Head | Butcher | Utah |
| 50 | Ruby Clark | 25 | Wife-H | — | Utah |
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)