RC
Robert Clark — 1940 US Census Record
Model Tree available1940 United States Federal Census · Denver-County, Colorado
Our Model Tree links this Robert Clark across the 1920, 1930 and 1940 US Censuses in Denver-County, Colorado (XGBoost, ~Confirmed), with identified parents Robert & Estelle — first a son (b.~1919), then head of a 7-person household.
Age 21
b. ~1919
Male
Son
Born: Colorado
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Denver-County, Colorado |
| Surname | Clark |
| Given Name | Robert F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | Denver City |
| 1935 Residence (County) | Denver |
| Additional Details | |
| Occupation | Salesman |
| Industry | W. R. Plumbing Supplies |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 600 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same Place |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Occupation | Salesman |
| Township / Ward | Denver City |
| Est. Birth Year | ~1919 |
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 Robert | Age | Birth yr |
|---|---|---|---|---|
| Patricia Clark | Daughter | — | 11 | ~1929 |
| Jeanne Clark | Daughter | — | 19 | ~1921 |
| Robert Clark | Head | — | 46 | ~1894 |
| Robert Clark | Son | — | 21 | ~1919 |
| Delbert Clark | Son | — | 16 | ~1924 |
| Estelle Clark | Spouse | — | 43 | ~1897 |
| Doyle Clark | Spouse | — | 41 | ~1899 |
Census Appearances
1920
Denver, Colorado
Other, age 1
Denver, Colorado · implied b. ~1919 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Robert E |
| Relationship to Head | grandson |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Colorado |
| Mother's Birthplace | Iowa |
| Occupation | none |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1930
Denver, Colorado
Son, age 11
Denver, Colorado · implied b. ~1919 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Robert F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Colorado |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1940
Denver-County, Colorado
Son, age 21
Denver-County, Colorado · implied b. ~1919 — 7 household members
| Surname | Clark |
| Given Name | Robert F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | Denver City |
| 1935 Residence (County) | Denver |
| Occupation | Salesman |
| Industry | W. R. Plumbing Supplies |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 600 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same Place |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
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 Clark across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Robert Clark (~0.92 confidence) and mother Estelle Clark (~0.92 confidence) and mother Doyle Clark (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Robert Clark
b. ~1894
Source father
● Household
· direct · ~0.92
Mother
Estelle Clark
b. ~1898
Source mother
● Household
· direct · ~0.92
Mother
Doyle Clark
b. ~1899
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Clark
Son · 1940 · age 21 · b. ~1919 · Colorado
★ You are viewing this record
Sibling
Jeanne Clark
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Delbert Clark
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patricia Clark
Sibling · 1940 · age 11
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 — Denver-County, Colorado
Open full size
1940 US Federal Census — Denver-County, Colorado
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-00485-00151)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Daniel D. Goranflo | 72 | Head | — | Iowa |
| 2 | Cora S. Goranflo | 62 | Wife | — | Indiana |
| 3 | Joseph Koehlbauer | 63 | Head | Carpenter | France |
| 4 | Rose R. Koehlbauer | 52 | Wife | — | Ohio |
| 5 | Lorraine R. Koehlbauer | 12 | Daughter | — | Colorado |
| 6 | Clarence W. Reed | 54 | Head | Weigh Master | Nebraska |
| 7 | May M. Reed | 53 | Wife | — | Missouri |
| 8 | Rema M. Reed | 28 | Daughter | Trained Nurse | Nebraska |
| 9 | John A. Reed | 26 | Son | Attendant | Nebraska |
| 10 | Delora A. Reed | 21 | Daughter | New Worker | Colorado |
| 11 | H. Marian | 89 | Mother | — | England |
| 13 | Silas H. Tully | 70 | Head | — | Missouri |
| 14 | Lida M. Tully | 66 | Wife | — | Illinois |
| 15 | Robert M. Mantz | 64 | Head | Clerk | Germany |
| 16 | Mary Mantz | 65 | Wife | — | Germany |
| 17 | Floyd W. Dorcas | 39 | Head | Laborer | Kansas |
| 18 | Margery G. Dorcas | 39 | Wife | — | Colorado |
| 19 | Le Roy Lantz | 50 | Head | Locomotive Engineer | Iowa |
| 20 | Grace S. Lantz | 47 | Wife | — | Colorado |
| 21 | Earl W. Shacklett | 55 | Head | Conductor | Kansas |
| 22 | Cora A. Shacklett | 55 | Wife | — | Kansas |
| 23 | Willard Hall | 66 | Head | — | Missouri |
| 24 | Louisa Hall | 73 | Wife | — | New York |
| 25 | Carl F. Duggan | 37 | Head | Printer | Colorado |
| 26 | Louise C. Duggan | 35 | Wife | — | Colorado |
| 27 | Edward S. Duggan | 5 | Son | — | Colorado |
| 28 | James O. Duggan | 3 | Son | — | Colorado |
| 29 | Robert L. Clark | 46 | Head | Clerk | Colorado |
| 30 | Estelle M. Clark | 43 | Wife | — | Iowa |
| 31 | Robert F. Clark THIS PERSON | 21 | Son | Salesman | Colorado |
| 32 | Jeanne M. Clark | 19 | Daughter | New Worker | Colorado |
| 33 | Delbert W. Clark | 16 | Son | — | Colorado |
| 34 | Patricia A. Clark | 11 | Daughter | — | Colorado |
| 35 | Doyle Elizabeth T. Clark | 41 | Wife | New Worker | Iowa |
| 36 | Don J. Conway | 35 | Head | Proprietor | Colorado |
| 37 | Sarah L. Conway | 35 | Wife | — | Pennsylvania |
| 38 | David Conway | 9 | Son | — | Colorado |
| 39 | Herbert Bullock | 57 | Head | Salesman | England |
| 40 | Lillian F. Bullock | 60 | Wife | — | England |
Pedigree Summary
Robert + 3 siblings
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
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)