DC
David Cook — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Tooele-County, Utah
Our Model Tree links this David Cook across the 1930 and 1940 US Censuses in Tooele-County, Utah (XGBoost, ~Confirmed) — first a son (b.~1926), then head of a 7-person household.
Age 14
b. ~1926
Male
Son
Born: Utah
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Tooele-County, Utah |
| Surname | Cook |
| Given Name | David L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Utah |
| 1935 Residence (City) | Grantsville |
| 1935 Residence (County) | Tooele |
| Additional Details | |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
| Township / Ward | Grantsville |
| Est. Birth Year | ~1926 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to David | Age | Birth yr |
|---|---|---|---|---|
| Marva Cook | Daughter | — | 10 | ~1930 |
| Robert Cook | Head | — | 58 | ~1882 |
| David Cook | Son | — | 14 | ~1926 |
| Alice Cook | Spouse | — | 51 | ~1889 |
| Marilyn Cook | Son | — | 8 | ~1932 |
| Evelyn Cook | Daughter | — | 16 | ~1924 |
| Daniel Cook | Son | — | 17 | ~1923 |
Census Appearances
1930
Tooele, Utah
Son, age 4
Tooele, Utah · implied b. ~1926 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | David P |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Utah |
| Father's Birthplace | Utah |
| Mother's Birthplace | Utah |
| Occupation | none |
| Birth State | Utah |
| Birth Country | United States |
| Birthplace (normalized) | utah |
1940
Tooele-County, Utah
Son, age 14
Tooele-County, Utah · implied b. ~1926 — 7 household members
| Surname | Cook |
| Given Name | David L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | Utah |
| 1935 Residence (City) | Grantsville |
| 1935 Residence (County) | Tooele |
| Highest Grade | No 8 |
| 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 David Cook across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
David Cook
Son · 1940 · age 14 · b. ~1926 · Utah
★ You are viewing this record
Sibling
Evelyn Cook
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Daniel Cook
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marva Cook
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marilyn Cook
Sibling · 1940 · age 8
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
1940 US Federal Census — Tooele-County, Utah
Open full size
1940 US Federal Census — Tooele-County, Utah
Page Contents
37 people indexed on this census page (nara:1940:m-t0627-04218-00454)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mildred Nelson | 20 | Wife | Housewife | Utah |
| 2 | Golden Nelson | 39 | Brother | Farmer | Utah |
| 3 | Howard Sr. Green | 75 | Head | — | Utah |
| 4 | Annie H. Green | 73 | Wife | — | England |
| 5 | Parley H. Green | 43 | Son | Laborer | Utah |
| 6 | Elsie Green | 13 | Granddaughter | — | Utah |
| 7 | Farrell Green | 11 | Grandson | — | Utah |
| 8 | Donald Green | 9 | Grandson | — | Utah |
| 9 | Myrl Green | 7 | Grandson | — | Utah |
| 11 | Robert Cook | 58 | Head | Farmer | Utah |
| 12 | Alice Q. Cook | 51 | Wife | — | Utah |
| 13 | David L. Cook THIS PERSON | 14 | Son | — | Utah |
| 14 | Marva Cook | 10 | Daughter | — | Utah |
| 15 | Marilyn Cook | 8 | Son | — | Utah |
| 16 | Daniel H. Cook | 17 | Son | New Worker | Utah |
| 17 | Evelyn Cook | 16 | Daughter | — | Utah |
| 18 | Geo. Edward Smith | 40 | Head | Laborer | Utah |
| 19 | Amy S. Smith | 36 | Wife | — | Utah |
| 20 | George S. Smith | 15 | Son | — | Utah |
| 21 | Ruby D. Smith | 12 | Daughter | — | Utah |
| 22 | Richard Smith | 10 | Son | — | Utah |
| 23 | Dolores Smith | 8 | Daughter | — | Utah |
| 24 | Pharis Reed Smith | 6 | Son | — | Utah |
| 25 | Ruth Smith | 4 | Daughter | — | Utah |
| 26 | Annette Smith | 1 | Daughter | — | Utah |
| 28 | Matilda Erickson | 78 | Head | — | Sweden |
| 29 | Vern R. Nickerson | 30 | Head | Laborer | Utah |
| 30 | June Nickerson | 20 | Wife | — | Idaho |
| 31 | Etta Erickson | 38 | Head | — | Utah |
| 32 | Vonelda Erickson | 15 | Daughter | — | Utah |
| 33 | Charles W. Erickson | 3 | Son | — | Utah |
| 34 | Wm. H. Leclerg | 73 | Head | — | Denmark |
| 35 | Dagmar C. Leclerg | 66 | Wife | — | Denmark |
| 37 | Oliver H. Heppie | 58 | Head | Prop. & Manager | Nevada |
| 38 | Ida Q. Heppie | 66 | Wife | — | Kansas |
| 39 | Mary Q. Binnal | 84 | Head | — | England |
| 40 | Murry Stromberg | 52 | Head | Laborer | Utah |
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)