RF
Robert Fox — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cerro-Gordo-County, Iowa
Our Model Tree links this Robert Fox across the 1920, 1930 and 1940 US Censuses in Cerro-Gordo-County, Iowa (XGBoost, ~Confirmed), with identified parents Frances & L — first a son (b.~1914), then head of a 6-person household.
Age 26
b. ~1914
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Cerro-Gordo-County, Iowa |
| Surname | Fox |
| Given Name | Robert |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Mason City |
| 1935 Residence (County) | Cerro Gordo |
| Additional Details | |
| Industry | 7 |
| Highest Grade | H-2 |
| 1935 Residence | Same House |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | Mason City |
| 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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Donald Fox | Son | — | 15 | ~1925 |
| Frances Fox | Spouse | — | 54 | ~1886 |
| Robert Fox | Son | — | 26 | ~1914 |
| Dick Fox | Son | — | 12 | ~1928 |
| Dale Fox | Son | — | 18 | ~1922 |
| Llewellyn Fox | Head | — | 53 | ~1887 |
Census Appearances
1920
Cerro Gordo, …
Son, age 5
Cerro Gordo, Iowa · implied b. ~1915 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fox |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Wisconsin |
| Occupation | none |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Cerro Gordo, …
Son, age 16
Cerro Gordo, Iowa · implied b. ~1914 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Fox |
| Given Name | Robert L. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Wisconsin |
| Occupation | none |
| 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 — 6 household members
| Surname | Fox |
| Given Name | Robert |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | Mason City |
| 1935 Residence (County) | Cerro Gordo |
| Industry | 7 |
| Highest Grade | H-2 |
| 1935 Residence | Same House |
| 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 Robert Fox across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Frances Fox (~0.92 confidence) and father L Fox (~0.92 confidence) and father Llewellyn Fox (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Frances Fox
b. ~1886
Source mother
● Household
· direct · ~0.92
Father
L Fox
b. ~1887
Source father
● Household
· direct · ~0.92
Father
Llewellyn Fox
b. ~1887
Source father
● Household
· direct · ~0.92
This person
Anchor record
Robert Fox
Son · 1940 · age 26 · b. ~1914 · Iowa
★ You are viewing this record
Sibling
Donald Fox
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dick Fox
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dale Fox
Sibling · 1940 · age 18
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-t0627-01146-00571)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Evelyn Kafer | 24 | daughter | Housework | Iowa |
| 42 | Alberta Kafer | 18 | daughter | — | Iowa |
| 43 | Luverne Kafer | 14 | son | — | Iowa |
| 44 | Marilyn Kafer | 9 | daughter | — | Iowa |
| 45 | Lorraine Kafer | 7 | daughter | — | Iowa |
| 46 | Lester Merritt | 45 | Head | Engineer | Iowa |
| 47 | Mabel Merritt | 40 | wife | — | Iowa |
| 48 | Lester P. Merritt | 21 | son | Painter | Iowa |
| 49 | Francis Merritt | 20 | son | New Worker | Iowa |
| 50 | Carlton Merritt | 15 | son | — | Iowa |
| 51 | Shirley Merritt | 5 | daughter | — | Iowa |
| 52 | Francis Bladell | 27 | Step-son | Driver | Illinois |
| 53 | Barbara Bladell | 18 | daughter-in-law | — | Iowa |
| 54 | Steven Vivian | 37 | Head | Shipping Clerk | Wisconsin |
| 55 | Blanche Vivian | 29 | wife | — | Iowa |
| 56 | Bonnie J. Vivian | 10 | daughter | — | Iowa |
| 57 | Robert S. Vivian | 9 | son | — | Iowa |
| 58 | William R. Vivian | 7 | son | — | Iowa |
| 59 | James A. Vivian | 5 | son | — | Iowa |
| 60 | Frank A. Laur | 47 | Head | Janitor + Jailer | Iowa |
| 61 | Dorothy Laur | 44 | wife | — | Iowa |
| 62 | Frank H. Laur | 20 | son | U.S. Navy | Iowa |
| 63 | Wayne S. Laur | 18 | son | — | Iowa |
| 64 | Don B. Laur | 16 | son | — | Iowa |
| 65 | Harold March | 36 | Head | Manager | Iowa |
| 66 | Lois A. March | 32 | wife | — | Iowa |
| 67 | Gerald March | 3 | son | — | Iowa |
| 68 | Line Left Vacant By Error | None | — | — | — |
| 69 | James Boyle | 61 | Head | Meat Cutter | Iowa |
| 70 | Josephine Boyle | 56 | wife | — | Iowa |
| 71 | Daniel J. Boyle | 27 | son | Laborer | Iowa |
| 72 | William Boyle | 14 | son | — | Iowa |
| 73 | Llewellyn Fox | 53 | Head | Roofer | Iowa |
| 74 | Frances Fox | 54 | wife | — | Wisconsin |
| 75 | Robert Fox THIS PERSON | 26 | son | — | Iowa |
| 76 | Dale Fox | 18 | son | Laborer | Iowa |
| 77 | Donald Fox | 15 | son | — | Iowa |
| 78 | Dick Fox | 12 | son | — | Iowa |
| 79 | Robert E. Lillibridge | 61 | Head | Operator | Iowa |
| 80 | Laura Lillibridge | 47 | wife | — | Iowa |
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)