RM
Robert Miller — 1940 US Census Record
Model Tree available1940 United States Federal Census · Black-Hawk-County, Iowa
Our Model Tree links this Robert Miller across the 1920, 1930 and 1940 US Censuses in Black-Hawk-County, Iowa (XGBoost, ~Confirmed), with identified parents John & Emma — first a head (b.~1897), then head of a 4-person household.
Age 43
b. ~1897
Male
Head
Born: Iowa
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Black-Hawk-County, Iowa |
| Surname | Miller |
| Given Name | Robert W. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Waterloo City |
| 1935 Residence (County) | Black Hawk |
| Additional Details | |
| Occupation | Contracting Manager |
| Industry | General Contracting |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 5000 |
| Highest Grade | C-3 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Occupation | Contracting Manager |
| Township / Ward | Waterloo City |
| Est. Birth Year | ~1897 |
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 |
|---|---|---|---|---|
| Robert Miller | Head | — | 43 | ~1897 |
| Mildred Votroun | Other | — | 23 | ~1917 |
| Robert Miller | Son | — | 10 | ~1930 |
| Evelyn Miller | Spouse | — | 42 | ~1898 |
Census Appearances
1920
Black Hawk, …
Son, age 22
Black Hawk, Iowa · implied b. ~1898 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Miller |
| Given Name | Robert W. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Germany |
| Mother's Birthplace | Iowa |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1930
Black Hawk, …
Head, age 32
Black Hawk, Iowa · implied b. ~1898 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Miller |
| Given Name | Robert W. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Iowa |
| Age at First Marriage | 26 |
| Father's Birthplace | Germany |
| Mother's Birthplace | Iowa |
| Occupation | contractor |
| Industry | building |
| Class of Worker | E |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 9000 |
| Radio Set | R |
| Veteran | WW |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Black-Hawk-County, Iowa
Head, age 43
Black-Hawk-County, Iowa · implied b. ~1897 — 4 household members
| Surname | Miller |
| Given Name | Robert W. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Iowa |
| 1935 Residence (City) | Waterloo City |
| 1935 Residence (County) | Black Hawk |
| Occupation | Contracting Manager |
| Industry | General Contracting |
| Class of Worker | OA |
| Hours Worked | 60 |
| Income (1939) | 5000 |
| Highest Grade | C-3 |
| 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 Robert Miller across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Miller (~0.92 confidence) and mother Emma Miller (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Miller
b. ~1872
Source father
● Household
· direct · ~0.92
Mother
Emma Miller
b. ~1868
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Miller
Head · 1940 · age 43 · b. ~1897 · 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 — Black-Hawk-County, Iowa
Open full size
1940 US Federal Census — Black-Hawk-County, Iowa
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01139-01249)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Lois G. Grey | 30 | Wife | — | Iowa |
| 2 | Judith Grey | 4 | Daughter | — | — |
| 3 | Gerald Grey | 1 | Son | — | — |
| 4 | Christie Murphy | 42 | Servant | Household Duties | Iowa |
| 5 | Norman F. Shiek | 56 | Head | Retired Farmer | Kansas |
| 6 | Valeria A. Shiek | 54 | Wife | — | Ohio |
| 7 | W. Howard Overstake | 29 | Head | Traveling Salesman | Iowa |
| 8 | Bee Overstake | 33 | Wife | — | Iowa |
| 9 | George Rausch | 33 | Head | Route Manager | Iowa |
| 10 | Anna Rausch | 27 | Wife | — | Iowa |
| 11 | Geraldine Rausch | 5 | Daughter | — | — |
| 12 | Lois Jean Rausch | 3 | Daughter | — | — |
| 13 | Arthur O. Harvey | 63 | Head | Foreman Planning Department | England |
| 14 | Clara Harvey | 61 | Wife | — | Indiana |
| 15 | Elmer D. Sherrill | 46 | Head | Mechanical Engineer | Iowa |
| 16 | Dorothy D. Sherrill | 44 | Wife | — | Illinois |
| 17 | Phyllis Sherrill | 18 | Daughter | — | Iowa |
| 18 | Dale Sherrill | 16 | Son | — | Iowa |
| 19 | Ross Sherrill | 14 | Son | — | Iowa |
| 20 | Max Sherrill | 8 | Son | — | Iowa |
| 21 | Beatrice Starr | 20 | Lodger | Stenographer | Iowa |
| 22 | Ernest H. Matthies | 42 | Head | Proprietor | Iowa |
| 23 | Alpha Matthies | 41 | Wife | — | Iowa |
| 24 | Betty Jean Matthies | 14 | Daughter | — | Iowa |
| 25 | Ernest H. Jr. Matthies | 8 | Son | — | Iowa |
| 26 | Carl Rosline | 44 | Head | Foreman | Illinois |
| 27 | La Rue Rosline | 44 | Wife | — | Wisconsin |
| 28 | Carl Jr. Rosline | 19 | Son | Bus Boy | Wisconsin |
| 29 | Ralph Rosline | 14 | Son | — | Wisconsin |
| 30 | Robert W. Miller THIS PERSON | 43 | Head | Contracting Manager | Iowa |
| 31 | Evelyn Miller | 42 | Wife | — | Iowa |
| 32 | Robert Wilson Miller | 10 | Son | — | Iowa |
| 33 | Mildred Votroun | 23 | Servant | Household Duties | Iowa |
| 34 | — | None | — | — | — |
| 35 | Edward A. John | 59 | Head | Retired Business Man | Illinois |
| 36 | Jessie F. John | 56 | Wife | — | Iowa |
| 37 | Raymond Smith | 54 | Head | Banker | Iowa |
| 38 | Sadie S. Smith | 56 | Wife | — | Iowa |
| 39 | Raymond Jr. Smith | 18 | Son | — | Iowa |
| 40 | Henry Benser | 54 | Head | Millwright | Minnesota |
Pedigree Summary
Robert
Gen 1 · 2 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)