EC
Elizabeth Cook — 1940 US Census Record
Model Tree available1940 United States Federal Census · Buchanan-County, Iowa
Our Model Tree links this Elizabeth Cook across the 1910, 1920, 1930 and 1940 US Censuses in Buchanan-County, Iowa (XGBoost, ~Confirmed), with identified parents Helen & Roy — first a daughter (b.~1910), then head of a 5-person household.
Age 30
b. ~1910
Female
Daughter
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Buchanan-County, Iowa |
| Surname | Cook |
| Given Name | Elizabeth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Independence City |
| 1935 Residence (County) | Buchanan |
| Additional Details | |
| Occupation | Manager |
| Industry | Abstract Co |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1560 |
| Highest Grade | C-4 |
| 1935 Residence | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Manager |
| Township / Ward | Independence City |
| Est. Birth Year | ~1910 |
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 Elizabeth | Age | Birth yr |
|---|---|---|---|---|
| Elizabeth Cook | Daughter | — | 30 | ~1910 |
| Roy Cook | Head | — | 61 | ~1879 |
| Jessie Rosenkrans | Other | — | 46 | ~1894 |
| Celia Currier | Other | — | 87 | ~1853 |
| Helen Cook | Spouse | — | 58 | ~1882 |
Census Appearances
1910
Buchanan, Iowa
Daughter, age
Buchanan, Iowa · implied b. ~1910 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | Elizabeth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Occupation | none |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1920
Buchanan, Iowa
Daughter, age 10
Buchanan, Iowa · implied b. ~1910 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | Elizabeth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Buchanan, Iowa
Daughter, age 20
Buchanan, Iowa · implied b. ~1910 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | Elizabeth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Buchanan-County, Iowa
Daughter, age 30
Buchanan-County, Iowa · implied b. ~1910 — 5 household members
| Surname | Cook |
| Given Name | Elizabeth |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Independence City |
| 1935 Residence (County) | Buchanan |
| Occupation | Manager |
| Industry | Abstract Co |
| Class of Worker | PW |
| Hours Worked | 48 |
| Income (1939) | 1560 |
| Highest Grade | C-4 |
| 1935 Residence | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
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 Elizabeth Cook across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Helen Cook (~0.92 confidence) and father Roy Cook (~0.92 confidence) and father A Cook (~0.92 confidence) and mother Nelly Cook (~0.92 confidence) and father Roy Cook (~0.92 confidence) and mother Helen Cook (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Helen Cook
b. ~1879
Source mother
● Household
· direct · ~0.92
Father
Roy Cook
b. ~1879
Source father
● Household
· direct · ~0.92
Father
A Cook
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Nelly Cook
b. ~1880
Source mother
● Household
· direct · ~0.92
Father
Roy Cook
b. ~1880
Source father
● Household
· direct · ~0.92
Mother
Helen Cook
b. ~1882
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Elizabeth Cook
Daughter · 1940 · age 30 · b. ~1910 · Iowa
★ 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 — Buchanan-County, Iowa
Open full size
1940 US Federal Census — Buchanan-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01142-01003)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | John Leonard | 23 | Lodger | Truck Driver | S. Dakota |
| 42 | Ray Donnelly | 24 | Lodger | Service Station Attendant | Iowa |
| 43 | Vernetta Kuehl | 20 | Lodger | Waitress | Iowa |
| 44 | Rozella Kuehl | 18 | Lodger | Beauty Operator | Iowa |
| 45 | Geo. J. Klotzbach | 54 | Head | Owner | Germany |
| 46 | Eva B. Klotzbach | 48 | Wife | — | Iowa |
| 47 | Wm Klotzbach | 15 | Son | — | Iowa |
| 48 | Kathrine Klotzbach | 12 | Daughter | — | Iowa |
| 49 | Wm Stumma | 35 | Lodger | — | Wisconsin |
| 50 | Roy F. Cook | 61 | Head | Attorney | Iowa |
| 51 | Helen Cook | 58 | Wife | — | Iowa |
| 52 | Elizabeth Cook THIS PERSON | 30 | Daughter | Manager | Iowa |
| 53 | Celia Currier | 87 | Mother-in-law | — | Iowa |
| 54 | Jessie Rosenkrans | 46 | Lodger | Practical Nurse | Iowa |
| 55 | J. E. Shannon | 42 | Head | Auditor | Iowa |
| 56 | John Shannon | 3 | Son | — | Michigan |
| 57 | Joyce Shannon | 2 | Daughter | — | Michigan |
| 58 | Mildred Hill | 38 | Sister | Housekeeper | Iowa |
| 59 | Dwight H. Burkhart | 24 | Head | Salesman | Iowa |
| 60 | Dorthy Burkhart | 24 | Wife | — | Iowa |
| 61 | A. Brooks | 2 | Son | — | Iowa |
| 62 | Rosa M. Leach | 76 | Head | — | New York |
| 63 | Harold C. Lewis | 30 | Head | Carpenter | Iowa |
| 64 | Evelyn Lewis | 26 | Wife | Waitress | Minnesota |
| 65 | Edsel Lewis | 2 | Son | — | Iowa |
| 66 | Frank T. Plank | 64 | Head | Dentist | Iowa |
| 67 | Varga L. Plank | 61 | Wife | — | Iowa |
| 68 | Harold S. Heege | 48 | Head | Owner | Iowa |
| 69 | Esther Heege | 45 | Wife | — | Iowa |
| 70 | Robert C. Heege | 18 | Son | — | Iowa |
| 71 | Arthur H. Stockmann | 28 | Head | Salesman | Minnesota |
| 72 | Eleanore Stockmann | 28 | Wife | — | Minnesota |
| 73 | Rudolf F. Levtze | 26 | Head | Partner | Iowa |
| 74 | Doris Levtze | 25 | Wife | — | S. Dakota |
| 75 | Susan Levtze | 1 | Daughter | — | Iowa |
| 76 | Darlene Slater | 17 | Maid | Maid | Iowa |
| 77 | John F. Corcoran | 37 | Head | Treasurer | Iowa |
| 78 | Sadie Corcoran | 37 | Wife | — | Iowa |
| 79 | Maude H. Purdy | 81 | Head | — | Iowa |
| 80 | Catherine A. Purdy | 41 | Daughter | — | Iowa |
Pedigree Summary
Elizabeth
Gen 1 · 6 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)