EC
Ellen Clark — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Denver-County, Colorado
Our Model Tree links this Ellen Clark across the 1930 and 1940 US Censuses in Denver-County, Colorado (XGBoost, ~Confirmed) — first a daughter (b.~1927), then head of a 8-person household.
Age 13
b. ~1927
Female
Daughter
Born: Colorado
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Denver-County, Colorado |
| Surname | Clark |
| Given Name | Ellen Marie |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | City & County of Denver |
| 1935 Residence (County) | City & County of Denver |
| Additional Details | |
| Hours Worked | 0 |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
| Township / Ward | City County Of Denver |
| Est. Birth Year | ~1927 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Ellen | Age | Birth yr |
|---|---|---|---|---|
| Ellen Clark | Daughter | — | 13 | ~1927 |
| Frank Clark | Head | — | 45 | ~1895 |
| William Clark | Son | — | 17 | ~1923 |
| Francis Clark | Son | — | 19 | ~1921 |
| Edward Clark | Son | — | 15 | ~1925 |
| Mary Clark | Daughter | — | 4 | ~1936 |
| Michael Clark | Son | — | 9 | ~1931 |
| Kathleen Clark | Spouse | — | 42 | ~1898 |
Census Appearances
1930
Denver, Colorado
Daughter, age 3
Denver, Colorado · implied b. ~1927 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Ellen M. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Colorado |
| Father's Birthplace | Colorado |
| Mother's Birthplace | Colorado |
| Can Read/Write | No |
| Birth State | Colorado |
| Birth Country | United States |
| Birthplace (normalized) | colorado |
1940
Denver-County, Colorado
Daughter, age 13
Denver-County, Colorado · implied b. ~1927 — 8 household members
| Surname | Clark |
| Given Name | Ellen Marie |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Colorado |
| 1935 Residence (City) | City & County of Denver |
| 1935 Residence (County) | City & County of Denver |
| Hours Worked | 0 |
| Highest Grade | No 6 |
| 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 Ellen Clark across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Ellen Clark
Daughter · 1940 · age 13 · b. ~1927 · Colorado
★ You are viewing this record
Sibling
Michael Clark
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Clark
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Clark
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Clark
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Clark
Sibling · 1940 · age 4
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-t0627-00484-00606)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Nellie Williamson | 80 | mother | — | Sweden |
| 2 | Thomas A. Kunkel | 58 | head | Traffic Manager | Missouri |
| 3 | Edith M. Kunkel | 48 | wife | — | Colo. |
| 4 | May F. Krastie | 55 | sister in law | Switchboard Operator | Colo. |
| 5 | Thomas A. Jr. Winkel | 11 | son | — | Colorado |
| 6 | Robert G. Winkel | 9 | son | — | Colorado |
| 7 | Dale S. Rice | 41 | head | Drug Supply Salesman | Colorado |
| 8 | Olive G. Rice | 40 | wife | — | Colorado |
| 9 | Glenn S. Rice | 12 | son | — | Colorado |
| 10 | Olivia N. Gibbons | 68 | mother in law | — | England |
| 11 | Lawrence C. Mapes | 29 | head | Switchman | Iowa |
| 12 | Sophie Mapes | 27 | wife | — | Iowa |
| 13 | Dick Hill | 51 | head | Fireman | Missouri |
| 14 | Macy C. Hill | 41 | wife | — | Missouri |
| 15 | Doris S. Hill | 18 | daughter | — | Colorado |
| 16 | Donald W. Hill | 13 | son | — | Colorado |
| 17 | Dixie Lee Hill | 6 | daughter | — | Colorado |
| 18 | Mary M. Cotter | 69 | mother in law | — | Missouri |
| 19 | Cynthia A. Vincent | 67 | head | — | New York |
| 20 | Charles S. Williams | 54 | head | Elevator Erector | Missouri |
| 21 | Rosina R. Williams | 52 | wife | — | England |
| 22 | Kenneth S. Williams | 16 | son | — | Colo. |
| 23 | Bernice A. Williams | 13 | daughter | — | Colorado |
| 24 | Rudolph J. Thornton | 30 | head | Drug Supply Salesman | Missouri |
| 25 | Margaret M. Thornton | 25 | wife | Salesman | Kansas |
| 26 | Philip E. Thornton | 5 | son | — | Missouri |
| 27 | Ann M. Thornton | 1 | daughter | — | Missouri |
| 28 | Frank S. Clark | 45 | head | Helper Pressroom | Colorado |
| 29 | Kathleen T. Clark | 42 | wife | — | Colorado |
| 30 | Francis R. Clark | 19 | son | — | Colorado |
| 31 | William T. Clark | 17 | son | — | Colorado |
| 32 | Edward M. Clark | 15 | son | — | Colorado |
| 33 | Ellen Marie Clark THIS PERSON | 13 | daughter | — | Colorado |
| 34 | Michael T. Clark | 9 | son | — | Colorado |
| 35 | Mary Agnes Clark | 4 | daughter | — | Colorado |
| 36 | William Bradshaw | 65 | head | Accountant | Penn. |
| 37 | Edith J. Bradshaw | 54 | wife | — | Missouri |
| 38 | J. Charles Daggs | 27 | head | Machinist | Colorado |
| 39 | Alma S. Daggs | 27 | wife | — | Colorado |
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)