RA
Robert Armstrong — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Salt-Lake-County, Utah
Our Model Tree links this Robert Armstrong across the 1920, 1930 and 1940 US Censuses in Salt-Lake-County, Utah (XGBoost, ~Confirmed) — first a head (b.~1878), then head of a 3-person household.
Age 62
b. ~1878
Male
Head
Born: Australia
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Salt-Lake-County, Utah |
| Surname | Armstrong |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 62 |
| Marital Status | Married |
| Birthplace | Australia |
| 1935 Residence (City) | Salt Lake City |
| 1935 Residence (County) | Salt Lake |
| Naturalization Status | Naturalized |
| Additional Details | |
| Occupation | Salesman |
| Industry | Potato flakes |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 900 |
| Highest Grade | C 3 |
| 1935 Residence | Same house |
| Birthplace (normalized) | australia |
| Occupation | Salesman |
| Township / Ward | Salt Lake City |
| Est. Birth Year | ~1878 |
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 |
|---|---|---|---|---|
| Robert Armstrong | Head | — | 62 | ~1878 |
| Robert Armstrong | Son | — | 18 | ~1922 |
| Nellie Armstrong | Spouse | — | 52 | ~1888 |
Census Appearances
1920
Salt Lake, …
Head, age 41
Salt Lake, Utah · implied b. ~1879 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Armstrong |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Australia |
| Year of Immigration | 1888 |
| Naturalization Status | Naturalized |
| Father's Birthplace | Ireland |
| Mother's Birthplace | England |
| Occupation | Traveling salesman |
| Industry | Glove Co |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Free/Mortgaged | F |
| Year of Naturalization | 1893 |
| Birthplace (normalized) | australia |
1930
Salt Lake, …
Head, age 52
Salt Lake, Utah · implied b. ~1878 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Armstrong |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Australia |
| Naturalization Status | Naturalized |
| Year of Immigration | 1889 |
| Age at First Marriage | 31 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | England |
| Occupation | Salesman |
| Industry | Flour Mills |
| Class of Worker | W |
| Can Read/Write | Yes |
| Mother Tongue | English |
| Home Owned/Rented | O |
| Home Value / Rent | 3000 |
| Birthplace (normalized) | australia |
1940
Salt-Lake-County, Utah
Head, age 62
Salt-Lake-County, Utah · implied b. ~1878 — 3 household members
| Surname | Armstrong |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 62 |
| Marital Status | Married |
| Birthplace | Australia |
| 1935 Residence (City) | Salt Lake City |
| 1935 Residence (County) | Salt Lake |
| Naturalization Status | Naturalized |
| Occupation | Salesman |
| Industry | Potato flakes |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 900 |
| Highest Grade | C 3 |
| 1935 Residence | Same house |
| Birthplace (normalized) | australia |
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 Armstrong across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Armstrong
Head · 1940 · age 62 · b. ~1878 · Utah
★ 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 — Salt-Lake-County, Utah
Open full size
1940 US Federal Census — Salt-Lake-County, Utah
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-04226-00443)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Robert C Whitaker | 5 | Son | — | Utah |
| 42 | Sarah E Kore | 70 | Head | — | England |
| 43 | Frederick E Kore | 35 | Son | Bartender | Utah |
| 44 | W. V. Jensen | 37 | Son-in-law | Foreman | Utah |
| 45 | Kathleen Jensen | 37 | Daughter | Stenographer | Utah |
| 46 | Victor Jensen | 17 | Grandson | — | Utah |
| 47 | Guy C Smith | 50 | Head | Painter | Colorado |
| 48 | Susannah Smith | 47 | Wife | — | Utah |
| 49 | Robert W. Smith | 20 | Son | Attendant | Utah |
| 50 | Ada L. Smith | 18 | Daughter | — | Utah |
| 51 | Walter Steedman | 82 | Head | — | England |
| 52 | Edith E Steedman | 74 | Wife | — | England |
| 53 | Racheal Elsaas | 55 | Head | — | Utah |
| 54 | Ella Elsaas | 50 | Sister | Maid | Utah |
| 55 | Wayne S. Starin | 26 | Head | Manager | Utah |
| 56 | La Verne Starin | 26 | Wife | Operator | Utah |
| 57 | Sheldon R Starin | 3 | Son | — | Utah |
| 58 | Melba Starin | 24 | Wife | — | Utah |
| 59 | Wayne R. Starin | 2 | Son | — | Utah |
| 60 | Ronald S. Starin | 1 | Son | — | Utah |
| 61 | Robert Armstrong THIS PERSON | 62 | Head | Salesman | Australia |
| 62 | Nellie Armstrong | 52 | Wife | — | Utah |
| 63 | Robert Jr. Armstrong | 18 | Son | Delivery | Utah |
| 64 | Oliver Jacobsen | 42 | Head | Furnace Repair | Utah |
| 65 | Amelia Jacobsen | 40 | Wife | — | Utah |
| 66 | Ruth Jacobsen | 15 | Daughter | — | Utah |
| 67 | William Jacobsen | 9 | Son | — | Utah |
| 68 | George Jacobsen | 7 | Son | — | Utah |
| 69 | Shirley Jacobsen | 4 | Daughter | — | Utah |
| 70 | Richard Jacobsen | 1 | Son | — | Utah |
| 71 | Bryant L. Young | 52 | Head | Laborer | Utah |
| 72 | Edith H. Young | 49 | Wife | — | Utah |
| 73 | Bryant H. Young | 30 | Son | Surveyor | Utah |
| 74 | Flynn E Young | 24 | Son | Laborer | Utah |
| 75 | Beth Young | 19 | Daughter | Elevator Operator | Utah |
| 76 | Phyllis Young | 16 | Daughter | — | Utah |
| 77 | Dorothy L. Young | 15 | Daughter | — | Utah |
| 78 | Donna R Young | 7 | Daughter | — | Utah |
| 79 | James E Nield | 44 | Head | Barber | Wyoming |
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)