WC
William Cook — 1940 US Census Record
Model Tree available1940 United States Federal Census · Linn-County, Iowa
Our Model Tree links this William Cook across the 1920, 1930 and 1940 US Censuses in Linn-County, Iowa (XGBoost, ~Confirmed), with identified parents Bushnell & Nellie — first a son (b.~1911), then head of a 7-person household.
Age 29
b. ~1911
Male
Son
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Linn-County, Iowa |
| Surname | Cook |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Cedar Rapids |
| 1935 Residence (County) | Linn |
| Additional Details | |
| Occupation | Packer-man |
| Industry | Cereal Co. |
| Class of Worker | PW |
| Hours Worked | 24 |
| Income (1939) | 1002 |
| Highest Grade | H-2 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Packer-Man |
| Township / Ward | Cedar Rapids |
| Est. Birth Year | ~1911 |
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 William | Age | Birth yr |
|---|---|---|---|---|
| Ruth Cook | Daughter | — | 15 | ~1925 |
| Margaret Cook | Daughter | — | 13 | ~1927 |
| Bushnell Cook | Head | — | 53 | ~1887 |
| William Cook | Other | — | 7 | ~1933 |
| Lois Cook | Other | — | 3 | ~1937 |
| William Cook | Son | — | 29 | ~1911 |
| Nellie Cook | Spouse | — | 52 | ~1888 |
Census Appearances
1920
Linn, Iowa
Son, age 9
Linn, Iowa · implied b. ~1911 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Illinois |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Linn, Iowa
Son, age 19
Linn, Iowa · implied b. ~1911 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cook |
| Given Name | William S. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Illinois |
| Occupation | Laborer |
| Industry | Planning Mill |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Linn-County, Iowa
Son, age 29
Linn-County, Iowa · implied b. ~1911 — 7 household members
| Surname | Cook |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Cedar Rapids |
| 1935 Residence (County) | Linn |
| Occupation | Packer-man |
| Industry | Cereal Co. |
| Class of Worker | PW |
| Hours Worked | 24 |
| Income (1939) | 1002 |
| Highest Grade | H-2 |
| 1935 Residence | Same place |
| 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 William Cook across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Bushnell Cook (~0.92 confidence) and mother Nellie Cook (~0.92 confidence) and mother Margaret Cook (~0.92 confidence) and father Edward Mcclung (~0.92 confidence) and mother Naomi Mcclung (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Bushnell Cook
b. ~1887
Source father
● Household
· direct · ~0.92
Mother
Nellie Cook
b. ~1888
Source mother
● Household
· direct · ~0.92
Mother
Margaret Cook
b. ~1888
Source mother
● Household
· direct · ~0.92
Father
Edward Mcclung
b. ~1894
Source father
● Household
· direct · ~0.92
Mother
Naomi Mcclung
b. ~1894
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Cook
Son · 1940 · age 29 · b. ~1911 · Iowa
★ You are viewing this record
Sibling
Ruth Cook
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Cook
Sibling · 1940 · age 13
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 — Linn-County, Iowa
Open full size
1940 US Federal Census — Linn-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01177-00371)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Neil Coffie | 55 | Head | Chef | Iowa |
| 42 | Donald M. Coffie | 31 | Son | Engineer | Iowa |
| 43 | Ruby Coffie | 31 | Daughter-in-law | — | Iowa |
| 44 | Patti Coffie | 2 | Granddaughter | — | Iowa |
| 45 | Gerald Coffie | 35 | Son | Traveling Salesman | Iowa |
| 46 | Miller Mcallister | 43 | Head | Traveling Salesman | Iowa |
| 47 | Lou O. Mcallister | 35 | Wife | — | Michigan |
| 48 | Ralph Mikesell | 21 | Head | Laborer | Iowa |
| 49 | Lucille Mikesell | 20 | Wife | — | Iowa |
| 50 | Ethan Switzer | 37 | Head | Truck Driver | Iowa |
| 51 | Clara O. Switzer | 33 | Wife | — | Iowa |
| 52 | Fred Young | 27 | Head | Salesman | Iowa |
| 53 | Glennis Young | 24 | Wife | Beauty Operator | Iowa |
| 54 | Redana Young | 1 | Daughter | — | Iowa |
| 55 | W. W. Freytag | 27 | Head | Pressman | Iowa |
| 56 | Clara O. Freytag | 22 | Wife | — | Iowa |
| 57 | Louis Sopousek | 61 | Head | — | Iowa |
| 58 | C. Dewitt Wagner | 50 | Lodger | Tinner | Michigan |
| 59 | Thomas Mayer | 39 | Lodger | Painter | Minnesota |
| 60 | V. Thorstenburg | 40 | Lodger | Salesman | Iowa |
| 61 | Nellie Hinshaws | 23 | Lodger | Stenographer | Iowa |
| 62 | Bushnell Cook | 53 | Head | Mill-Wright | Iowa |
| 63 | Nellie Cook | 52 | Wife | — | Illinois |
| 64 | Ruth Cook | 15 | Daughter | — | Iowa |
| 65 | Margaret Cook | 13 | Daughter | — | Iowa |
| 66 | William Cook THIS PERSON | 29 | Son | Packer-Man | Iowa |
| 67 | William Dale Cook | 7 | Grandson | — | Iowa |
| 68 | Lois Lee Cook | 3 | Granddaughter | — | Iowa |
| 69 | Samuel E. Dale | 72 | Head | — | Iowa |
| 70 | Jennie M. Dale | 64 | Wife | — | Iowa |
| 71 | Paul Dale | 27 | Son | Lineman | Iowa |
| 72 | Albert Dauffenbach | 39 | Head | Switchman | Wisconsin |
| 73 | Margaret Dauffenbach | 36 | Wife | — | Missouri |
| 74 | Virginia Clayton | 18 | Daughter | — | Iowa |
| 75 | Alice Dauffenbach | 10 | Daughter | — | Iowa |
| 76 | Millard Endsley | 50 | Head | Laborer | Iowa |
| 77 | Anita Endsley | 49 | Wife | — | Iowa |
| 78 | James Endsley | 23 | Son | — | Missouri |
| 79 | Warren Endsley | 11 | Son | — | Iowa |
| 80 | Charles Husted | 31 | Head | Laborer | Iowa |
Related Census Records
Pedigree Summary
William + 2 siblings
Gen 1 · 5 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)