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Robert Wagner — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Black-Hawk-County, Iowa
Our Model Tree links this Robert Wagner across the 1930 and 1940 US Censuses in Black-Hawk-County, Iowa (XGBoost, ~Confirmed) — first a son (b.~1931), then head of a 9-person household.
Age 9
b. ~1931
Male
Son
Born: Iowa
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Black-Hawk-County, Iowa |
| Surname | Wagner |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | La Porte City Town |
| 1935 Residence (County) | Black Hawk |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | 1 |
| 1935 Residence | Same place |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
| Township / Ward | La Porte City Town |
| Est. Birth Year | ~1931 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Genevieve Wagner | Daughter | — | 27 | ~1913 |
| Mathilda Wagner | Spouse | — | 51 | ~1889 |
| Robert Wagner | Son | — | 9 | ~1931 |
| Edwin Wagner | Son | — | 20 | ~1920 |
| Matt Wagner | Head | — | 58 | ~1882 |
| Arnold Wagner | Son | — | 17 | ~1923 |
| Frances Wagner | Daughter | — | 17 | ~1923 |
| Marie Wagner | Daughter | — | 14 | ~1926 |
| Richard Wagner | Son | — | 8 | ~1932 |
Census Appearances
1930
Black Hawk, …
Son, age
Black Hawk, Iowa · implied b. ~1930 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Wagner |
| Given Name | Robert L. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Iowa |
| Father's Birthplace | Iowa |
| Mother's Birthplace | Iowa |
| Birth State | Iowa |
| Birth Country | United States |
| Birthplace (normalized) | iowa |
1940
Black-Hawk-County, Iowa
Son, age 9
Black-Hawk-County, Iowa · implied b. ~1931 — 9 household members
| Surname | Wagner |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Iowa |
| 1935 Residence (City) | La Porte City Town |
| 1935 Residence (County) | Black Hawk |
| Class of Worker | 0 |
| Highest Grade | 1 |
| 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 Wagner across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Robert Wagner
Son · 1940 · age 9 · b. ~1931 · Iowa
★ You are viewing this record
Sibling
Edwin Wagner
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Wagner
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marie Wagner
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frances Wagner
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Arnold Wagner
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Genevieve Wagner
Sibling · 1940 · age 27
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 — 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-t0627-01139-00057)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Catherine M Smith | 14 | Step Daughter | — | Iowa |
| 42 | Francine Mae Rauch | 6 | Niece | — | Iowa |
| 43 | Johnnie Rauch | 75 | Head | — | Poland |
| 44 | Ralph Yarrow | 42 | Head | Painting & Papering | Iowa |
| 45 | Mae Yarrow | 39 | Wife | — | Iowa |
| 46 | Ernest B Cole | 48 | Head | Laborer | Iowa |
| 47 | Mary Cole | 45 | Wife | — | Iowa |
| 48 | Lorraine Cole | 9 | Daughter | — | Iowa |
| 49 | John Reinhart | 39 | Head | Laborer | Illinois |
| 50 | Laura Reinhart | 37 | Wife | — | Pennsylvania |
| 51 | Vernon Reinhart | 14 | Son | — | Iowa |
| 52 | Lee Reinhart | 7 | Son | — | Iowa |
| 53 | Martin Morrison | 18 | Brother-in-law | Waiter | Iowa |
| 54 | Edward S. Geren | 75 | Head | Laborer | Iowa |
| 55 | Dora Geren | 58 | Wife | Water Layer | Iowa |
| 56 | Earl Bagenstos | 46 | Head | Owner | Missouri |
| 57 | Laura Bagenstos | 28 | Wife | — | North Dakota |
| 58 | Billy Gene Bagenstos | 8 | Son | — | Iowa |
| 59 | Matt Wagner | 58 | Head | Section Foreman | Iowa |
| 60 | Mathilda Wagner | 51 | Wife | — | Iowa |
| 61 | Genevieve Wagner | 27 | Daughter | House Work | Iowa |
| 62 | Edwin Wagner | 20 | Son | Linotype Operator | Iowa |
| 63 | Frances Wagner | 17 | Daughter | — | Iowa |
| 64 | Arnold Wagner | 17 | Son | — | Iowa |
| 65 | Marie Wagner | 14 | Daughter | — | Iowa |
| 66 | Robert Wagner THIS PERSON | 9 | Son | — | Iowa |
| 67 | Richard Wagner | 8 | Son | — | Iowa |
| 68 | Herbert Studebaker | 26 | Head | Laborer | Iowa |
| 69 | Alice Studebaker | 27 | Wife | — | Iowa |
| 70 | Philip A Frank | 63 | Uncle | — | Iowa |
| 71 | Etta Goodwin | 61 | Head | — | Iowa |
| 72 | Ruth Vopelak | 14 | Boarder | — | Iowa |
| 73 | Ernest Niles | 30 | Head | Foreman | Iowa |
| 74 | Verona Niles | 30 | Wife | Clerk | Iowa |
| 75 | Tilla Wonderscheider | 62 | Head | — | Iowa |
| 76 | James Kahler | 14 | Nephew | — | Iowa |
| 77 | William H Vahr | 67 | Head | Interior Decorating And Painting | Wisconsin |
| 78 | Viola C Vahr | 68 | Wife | — | Iowa |
| 79 | Harry G. Coher | 54 | Head | Proprietor | Iowa |
| 80 | Ana Coher | 52 | Wife | — | Nebraska |
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)