FC
Francis Clark — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cerro-Gordo-County, Iowa
Our Model Tree links this Francis Clark across the 1920, 1930 and 1940 US Censuses in Cerro-Gordo-County, Iowa (XGBoost, ~Confirmed), with identified parents Alex & Alice — first a son (b.~1914), then head of a 5-person household.
Age 26
b. ~1914
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cerro-Gordo-County, Iowa |
| Surname | Clark |
| Given Name | Francis |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Owen Twp. |
| 1935 Residence (County) | Cerro Gordo |
| Additional Details | |
| Occupation | station attendant |
| Industry | filling station |
| Class of Worker | PW |
| Income (1939) | 150 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Station Attendant |
| Township / Ward | Owen Twp |
| Est. Birth Year | ~1914 |
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 Francis | Age | Birth yr |
|---|---|---|---|---|
| Alice Clark | Spouse | — | 50 | ~1890 |
| Dorothy Clark | Daughter | — | 17 | ~1923 |
| Asa Clark | Head | — | 50 | ~1890 |
| Harold Clark | Son | — | 22 | ~1918 |
| Francis Clark | Son | — | 26 | ~1914 |
Census Appearances
1920
Cerro Gordo, …
Son, age 6
Cerro Gordo, Iowa · implied b. ~1914 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Francis |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| 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 |
Son, age 16
Cerro Gordo, Iowa · implied b. ~1914 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Frances |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| 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
Cerro-Gordo-County, Iowa
Son, age 26
Cerro-Gordo-County, Iowa · implied b. ~1914 — 5 household members
| Surname | Clark |
| Given Name | Francis |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Owen Twp. |
| 1935 Residence (County) | Cerro Gordo |
| Occupation | station attendant |
| Industry | filling station |
| Class of Worker | PW |
| Income (1939) | 150 |
| Highest Grade | Hs 4 |
| 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 Francis Clark across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Alex Clark (~0.92 confidence) and mother Alice Clark (~0.92 confidence) and father Asa Clark (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Alex Clark
b. ~1890
Source father
● Household
· direct · ~0.92
Mother
Alice Clark
b. ~1890
Source mother
● Household
· direct · ~0.92
Father
Asa Clark
b. ~1890
Source father
● Household
· direct · ~0.92
This person
Anchor record
Francis Clark
Son · 1940 · age 26 · b. ~1914 · Iowa
★ You are viewing this record
Sibling
Harold Clark
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Clark
Sibling · 1940 · age 17
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 — Cerro-Gordo-County, Iowa
Open full size
1940 US Federal Census — Cerro-Gordo-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01146-01178)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | William Koppen | 57 | Head | Farmer | Wisconsin |
| 2 | Clara B. Koppen | 43 | Wife | — | Minnesota |
| 3 | Howard Koppen | 23 | Son | Farm Laborer | Iowa |
| 4 | Mildred Koppen | 16 | Daughter | — | Iowa |
| 5 | Marcella Koppen | 13 | Daughter | — | Iowa |
| 6 | Sharon Koppen | 2 | Daughter | — | Iowa |
| 7 | E. Eddiel Stattler | 30 | Head | Farmer | Iowa |
| 8 | Ruby Marie Stattler | 28 | Wife | — | Iowa |
| 9 | Deloris Jean Stattler | 9 | Daughter | — | Iowa |
| 10 | Robert Martin Stattler | 5 | Son | — | Iowa |
| 11 | Forest Hodge | 40 | Head | Farmer | Iowa |
| 12 | Florence O. Hodge | 37 | Wife | — | Iowa |
| 13 | Harriet Hodge | 16 | Daughter | Retail Clerk | Iowa |
| 14 | Betty Hodge | 15 | Daughter | — | Iowa |
| 15 | Paul Hodge | 12 | Son | — | Iowa |
| 16 | John J. Dearduff | 49 | Head | Farmer | Wisconsin |
| 17 | Alice Dearduff | 44 | Wife | — | Iowa |
| 18 | Iona Dearduff | 18 | Daughter | — | Iowa |
| 19 | Arlene Dearduff | 17 | Daughter | — | Iowa |
| 20 | Doris Dearduff | 13 | Daughter | — | Iowa |
| 21 | Donald Dearduff | 12 | Son | — | Iowa |
| 22 | Marjorie Dearduff | 11 | Daughter | — | Iowa |
| 23 | Leslie Dearduff | 4 | Son | — | Iowa |
| 24 | John O. Kreider | 57 | Head | Farmer | Iowa |
| 25 | Ruby Kreider | 55 | Wife | — | Iowa |
| 26 | Landon Kreider | 19 | Son | Farm Laborer | Iowa |
| 27 | Lawrence O. Nelson | 40 | Head | Farmer | Iowa |
| 28 | Valborg Nelson | 39 | Wife | — | Norway |
| 29 | Lenore Nelson | 5 | Daughter | — | Iowa |
| 30 | Newell O. Nelson | 46 | Head | Farm Laborer | Iowa |
| 31 | Dan O. Harris | 54 | Head | Farmer | Iowa |
| 32 | Alma Harris | 46 | Wife | — | Iowa |
| 33 | Roger Harris | 17 | Son | Farm Laborer | Iowa |
| 34 | George A. Clark | 79 | Head | — | Iowa |
| 35 | Abrams Belle Clark | 69 | Housekeeper | Servant | Iowa |
| 36 | Asa Clark | 50 | Head | Farmer | Iowa |
| 37 | Alice O. Clark | 50 | Wife | — | Iowa |
| 38 | Francis Clark THIS PERSON | 26 | Son | Station Attendant | Iowa |
| 39 | Harold Clark | 22 | Son | Farm Laborer | Iowa |
| 40 | Dorothy Clark | 17 | Daughter | — | Iowa |
Related Census Records
Pedigree Summary
Francis + 2 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)