MC
Martha Campbell — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Salt-Lake-County, Utah
Our Model Tree links this Martha Campbell across the 1920, 1930 and 1940 US Censuses in Salt-Lake-County, Utah (XGBoost, ~Confirmed) — first a spouse (b.~1888), then head of a 5-person household.
Age 52
b. ~1888
Female
Spouse
Born: Utah
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Salt-Lake-County, Utah |
| Surname | Campbell |
| Given Name | Martha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Utah |
| 1935 Residence (City) | Salt Lake City |
| 1935 Residence (County) | Salt Lake |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | C 4 |
| 1935 Residence | Same place |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
| Township / Ward | Salt Lake City |
| Est. Birth Year | ~1888 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Martha | Age | Birth yr |
|---|---|---|---|---|
| Martha Campbell | Spouse | — | 52 | ~1888 |
| Wanda Campbell | Other | — | 20 | ~1920 |
| Richard Campbell | Other | — | 1 | ~1939 |
| Wm Campbell | Son | — | 22 | ~1918 |
| Wm Campbell | Head | — | 58 | ~1882 |
Census Appearances
1920
Salt Lake, …
Spouse, age 33
Salt Lake, Utah · implied b. ~1887 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | Martha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Utah |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Wisconsin |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
1930
Salt Lake, …
Other, age 43
Salt Lake, Utah · implied b. ~1887 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | Martha |
| Relationship to Head | Wife-H |
| Sex | F |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Utah |
| Age at First Marriage | 28 |
| Father's Birthplace | Illinois |
| Mother's Birthplace | Wisconsin |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
1940
Salt-Lake-County, Utah
Spouse, age 52
Salt-Lake-County, Utah · implied b. ~1888 — 5 household members
| Surname | Campbell |
| Given Name | Martha |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 52 |
| Marital Status | Married |
| Birthplace | Utah |
| 1935 Residence (City) | Salt Lake City |
| 1935 Residence (County) | Salt Lake |
| Class of Worker | 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 Martha Campbell across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
Martha Campbell
Spouse · 1940 · age 52 · b. ~1888 · 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
40 people indexed on this census page (nara:1940:m-t0627-04224-00280)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Joseph W. Hedden | 50 | Head | Bldg. Fireman | Idaho |
| 2 | Adeline Hedden | 40 | Wife | — | Utah |
| 3 | Mary E. Hedden | 17 | Daughter | — | Idaho |
| 4 | Lewis D. Griffiths | 43 | Head | Blacksmith | Utah |
| 5 | June Griffiths | 42 | Wife | Fitting & Alteration | Utah |
| 6 | John Edward Griffiths | 17 | Son | Clerk & Deliv. | Utah |
| 7 | Elayne R. Griffiths | 14 | Daughter | — | Utah |
| 8 | Lona June Griffiths | 11 | Daughter | — | Utah |
| 9 | Delora Griffiths | 9 | Daughter | — | Utah |
| 10 | Leda Kelson | 34 | Cousin | New Worker | Utah |
| 11 | Reinhold K. Stoof | 53 | Head | Watchman | Germany |
| 12 | Maria S. Stoof | 35 | Wife | — | Germany |
| 13 | Melvin Stoof | 13 | Son | — | Argentina |
| 14 | Delia Stoof | 11 | Daughter | — | Argentina |
| 15 | Elsa Stoof | 10 | Daughter | — | Argentina |
| 16 | Edla Stoof | 9 | Daughter | — | Argentina |
| 17 | Maria Stoof | 7 | Daughter | — | Argentina |
| 18 | Moroni Stoof | 5 | Son | — | Argentina |
| 19 | Norman Stoof | 3 | Son | — | Utah |
| 20 | Irene Stoof | 1 | Daughter | — | Utah |
| 21 | John W. Nelson | 25 | Head | Receiving Clerk | Utah |
| 22 | Esther M. Nelson | 26 | Wife | — | Canada Eng. |
| 23 | Wm. J. Campbell | 58 | Head | Pressman | Utah |
| 24 | Martha Campbell THIS PERSON | 52 | Wife | — | Utah |
| 25 | Wm. M. Campbell | 22 | Son | Pressman | Utah |
| 26 | Wanda Campbell | 20 | Daughter-in-law | — | Utah |
| 27 | Richard Campbell | 1 | Grandson | — | Utah |
| 28 | Wm. N. Beatty | 57 | Head | Land Agent | Nebraska |
| 29 | Martha S. Beatty | 57 | Wife | — | Missouri |
| 30 | Wm. N. Jr. Beatty | 20 | Son | Const. Quartermaster | Utah |
| 31 | Harry J. Calton | 35 | Head | Cashier & Office Work | Utah |
| 32 | Esther Calton | 35 | Wife | Office Work | Utah |
| 33 | Frank H. Babbel | 24 | Head | Parts Salesman | Utah |
| 34 | Bonnie G. Babbel | 21 | Wife | Telephone Oper. | Utah |
| 35 | William J. Reid | 49 | Head | Office Supply Salesman | Utah |
| 36 | Belle F. Reid | 50 | Wife | — | Utah |
| 37 | Isabelle Reid | 13 | Daughter | — | Utah |
| 38 | Carolus M. Roestenburg | 48 | Head | Operator Machine Shop | Netherlands |
| 39 | Adriana Roestenburg | 48 | Wife | — | Netherlands |
| 40 | Minnie Roestenburg | 18 | Daughter | — | Netherlands |
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)