RC
Robert Chambers — 1940 US Census Record
Model Tree available1940 United States Federal Census · Cerro-Gordo-County, Iowa
Our Model Tree links this Robert Chambers across the 1920, 1930 and 1940 US Censuses in Cerro-Gordo-County, Iowa (XGBoost, ~Confirmed), with identified parents Frank & Frank — first a head (b.~1907), then head of a 4-person household.
Age 33
b. ~1907
Male
Head
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Cerro-Gordo-County, Iowa |
| Surname | Chambers |
| Given Name | Robert E. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Emmetsburg |
| Additional Details | |
| Occupation | owner manager |
| Industry | gasoline service station |
| Class of Worker | E |
| Hours Worked | 59 |
| Income (1939) | 156 |
| Highest Grade | Hs 2 |
| 1935 Residence | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Owner Manager |
| Township / Ward | Mason City |
| Est. Birth Year | ~1907 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| John Chambers | Son | — | 5 | ~1935 |
| William Chambers | Son | — | 7 | ~1933 |
| Robert Chambers | Head | — | 33 | ~1907 |
| Louise Chambers | Spouse | — | 33 | ~1907 |
Census Appearances
1920
Cerro Gordo, …
Son, age 12
Cerro Gordo, Iowa · implied b. ~1908 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Chambers |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | S. Dakota |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Cerro Gordo, …
Son, age 23
Cerro Gordo, Iowa · implied b. ~1907 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Chambers |
| Given Name | Robert |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | South Dakota |
| Occupation | Clerk Clothing Store |
| Industry | 8394 |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Cerro-Gordo-County, Iowa
Head, age 33
Cerro-Gordo-County, Iowa · implied b. ~1907 — 4 household members
| Surname | Chambers |
| Given Name | Robert E. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Emmetsburg |
| Occupation | owner manager |
| Industry | gasoline service station |
| Class of Worker | E |
| Hours Worked | 59 |
| Income (1939) | 156 |
| Highest Grade | Hs 2 |
| 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 Robert Chambers across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Frank Chambers (~0.92 confidence) and father Frank Chambers (~0.92 confidence) and mother Grace Chambers (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Frank Chambers
b. ~1886
Source father
● Household
· direct · ~0.92
Father
Frank Chambers
b. ~1867
Source father
● Household
· direct · ~0.92
Mother
Grace Chambers
b. ~1883
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Chambers
Head · 1940 · age 33 · b. ~1907 · 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 — 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-t0627-01146-00743)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Devillow W. Word | 84 | Head | — | Wisconsin |
| 42 | Etta M. Word | 74 | Wife | — | Wisconsin |
| 43 | Mollie E. Hughes | 73 | Head | — | Wisconsin |
| 44 | Emma F. Lloyd | 69 | Head | — | Iowa |
| 45 | Lew H. Mills | 44 | Head | Painter And Decorator | Missouri |
| 46 | Gretna N. Mills | 44 | Wife | — | Iowa |
| 47 | Wm. J. Turner | 22 | Head | (Animal) Nurse | Iowa |
| 48 | Dorothy E. Turner | 22 | Wife | Janitor | Iowa |
| 49 | Vernon C. Moon | 26 | Head | Painter | Iowa |
| 50 | Elsie L. Moon | 24 | Wife | — | Wisconsin |
| 51 | Patricia Ann Moon | 5 | Daughter | — | Iowa |
| 52 | Dianne Rae Moon | 2 | Daughter | — | Iowa |
| 53 | John H. Lepper | 70 | Head | Owner Manager | Iowa |
| 54 | Irene T. Lepper | 68 | Wife | Bookkeeper | Iowa |
| 55 | John B. Welsh | 49 | Head | Sales Promoter | Iowa |
| 56 | Virginia N. Welsh | 48 | Wife | — | Iowa |
| 57 | Frances Nitchals | 19 | Lodger | Embalmer | Iowa |
| 58 | Oliver F. Meyer | 28 | Head | Switchboard Operator | Iowa |
| 59 | Frances C. Meyer | 25 | Wife | Truck Foreman | Iowa |
| 60 | Raymond J. Howard | 60 | Head | Salesgirl | Washington |
| 61 | Eldine M. Howard | 46 | Daughter | Teacher | New York |
| 62 | Hadyat M. Field | 28 | Lodger | Barber | Iowa |
| 63 | Extra L. Field | 28 | Lodger | — | Iowa |
| 64 | H. Dwight Schollian | 36 | Head | Dentist | Iowa |
| 65 | Rachel Schollian | 34 | Wife | Teller | Illinois |
| 66 | Gladys M. Schollian | 14 | Daughter | Architect | Iowa |
| 67 | Dale E. Mudgett | 56 | Head | Abstractor | Iowa |
| 68 | Bess M. Mudgett | 52 | Sister | Minister | Iowa |
| 69 | Ben S. Henry | 55 | Head | — | Oklahoma |
| 70 | Nell L. Henry | 52 | Wife | — | Iowa |
| 71 | David L. Nohrty | 40 | Head | — | Oklahoma |
| 72 | Elizabeth O. Nohrty | 36 | Wife | — | Ireland |
| 73 | Phyllis E. Nohrty | 12 | Daughter | — | Oregon |
| 74 | David G. Nohrty | 10 | Son | — | Iowa |
| 75 | Charles C. Nohrty | 7 | Son | — | Iowa |
| 76 | James D. Nohrty | 4 | Son | — | Iowa |
| 77 | Robert E. Chambers THIS PERSON | 33 | Head | Owner Manager | Iowa |
| 78 | Louise A. Chambers | 33 | Wife | — | Maine |
| 79 | William J. Chambers | 7 | Son | — | Iowa |
| 80 | John D. Chambers | 5 | Son | — | Iowa |
Pedigree Summary
Robert
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)