RD
Ralph Davis — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Iowa-County, Wisconsin
Our Model Tree links this Ralph Davis across the 1930 and 1940 US Censuses in Iowa-County, Wisconsin (XGBoost, ~Confirmed) — first a son (b.~1925), then head of a 11-person household.
Age 15
b. ~1925
Male
Son
Born: Wisconsin
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Iowa-County, Wisconsin |
| Surname | Davis |
| Given Name | Ralph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| 1935 Residence (City) | Dodgeville City |
| 1935 Residence (County) | Iowa |
| Additional Details | |
| Hours Worked | 0 |
| Income (1939) | 0 |
| Highest Grade | H 2 |
| 1935 Residence | Wisconsin |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
| Township / Ward | Dodgeville City |
| Est. Birth Year | ~1925 |
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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Ralph | Age | Birth yr |
|---|---|---|---|---|
| Emma Davis | Daughter | — | 9 | ~1931 |
| Mary Davis | Daughter | — | 11 | ~1929 |
| Nancy Davis | Daughter | — | 2 | ~1938 |
| John Davis | Head | — | 46 | ~1894 |
| Edward Davis | Son | — | 19 | ~1921 |
| Richard Davis | Son | — | 17 | ~1923 |
| Douglas Davis | Son | — | 6 | ~1934 |
| Thomas Davis | Son | — | 4 | ~1936 |
| Donald Davis | Son | — | 6 | ~1934 |
| Ralph Davis | Son | — | 15 | ~1925 |
| Mary Davis | Spouse | — | 41 | ~1899 |
Census Appearances
1930
Iowa, Wisconsin
Son, age 4
Iowa, Wisconsin · implied b. ~1926 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Ralph |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | Wisconsin |
| Occupation | none |
| Can Read/Write | No |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1940
Iowa-County, Wisconsin
Son, age 15
Iowa-County, Wisconsin · implied b. ~1925 — 11 household members
| Surname | Davis |
| Given Name | Ralph |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| 1935 Residence (City) | Dodgeville City |
| 1935 Residence (County) | Iowa |
| Hours Worked | 0 |
| Income (1939) | 0 |
| Highest Grade | H 2 |
| 1935 Residence | Wisconsin |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
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 Ralph Davis across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Ralph Davis
Son · 1940 · age 15 · b. ~1925 · Wisconsin
★ You are viewing this record
Sibling
Mary Davis
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Donald Davis
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Davis
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Douglas Davis
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Emma Davis
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Nancy Davis
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Davis
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Davis
Sibling · 1940 · age 4
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 — Iowa-County, Wisconsin
Open full size
1940 US Federal Census — Iowa-County, Wisconsin
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04483-00619)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Nell Morton | 56 | Head | Proprietor | Wisconsin |
| 2 | Alice Morton | 53 | Sister | County Nurse | Wisconsin |
| 3 | John R. Davis | 46 | Head | Cheesemaker | Wisconsin |
| 4 | Mary A. Davis | 41 | Wife | — | Wisconsin |
| 5 | Edward Davis | 19 | Son | Attendant | Wisconsin |
| 6 | Richard Davis | 17 | Son | — | Wisconsin |
| 7 | Ralph Davis THIS PERSON | 15 | Son | — | Wisconsin |
| 8 | Mary Lou Davis | 11 | Daughter | — | Wisconsin |
| 9 | Emma Jean Davis | 9 | Daughter | — | Wisconsin |
| 10 | Donald Davis | 6 | Son | — | Wisconsin |
| 11 | Douglas Davis | 6 | Son | — | Wisconsin |
| 12 | Thomas Dean Davis | 4 | Son | — | Wisconsin |
| 13 | Nancy R. Davis | 2 | Daughter | — | Wisconsin |
| 14 | Art Benn | 61 | Head | Stat Clerk | Wisconsin |
| 15 | Maud Benn | 58 | Wife | Cook | Wisconsin |
| 16 | Donald Kinders | 27 | Head | Supplement Boy | Wisconsin |
| 17 | Eulalia A. Kinders | 21 | Wife | Operator | Wisconsin |
| 18 | Lyle Frear | 28 | Lodger | Barber | S. Dakota |
| 19 | Donald Smith | 10 | Son | — | Wisconsin |
| 20 | Ellen Smith | 85 | Mother | — | Wisconsin |
| 21 | William Williams | 85 | Father | — | England |
| 22 | Roland Hodgson | 17 | Son | — | Wisconsin |
| 23 | Oscar Julson | 28 | Lodger | New Worker | Wisconsin |
| 24 | Byrd O. Miller | 37 | Wife | Proprietor | Wisconsin |
| 25 | Harry Brayton | 38 | Son | Laborer | Wisconsin |
| 26 | Ernest Rupp | 56 | Head | Cheesemaker | Switzerland |
| 27 | Louise B. Rupp | 35 | Wife | — | Germany |
| 28 | Charles Rupp | 7 | Son | — | Wisconsin |
| 29 | Helen Rupp | 5 | Daughter | — | Wisconsin |
| 30 | Mary E. Toy | 77 | Mother | — | England |
| 31 | Charlotte Randall | 20 | Lodger | 3Rd Grade Teacher | Wisconsin |
| 32 | Patsy Joe Powers | 3 | Daughter | — | Wisconsin |
| 33 | Emily Massey | 87 | Head | — | Vermont |
| 34 | Edith A. Massey | 47 | Daughter | Nurse | Wisconsin |
| 35 | Clarence A. Peterson | 51 | Lodger | Carpenter | Wisconsin |
| 36 | Ida J. Bakke | 31 | Lodger | Supervisor | Wisconsin |
| 37 | Esther Stallings | 34 | Head | Supervisor | Wisconsin |
| 38 | La Verne Lifferth | 14 | Son | Carrier Paper | Wisconsin |
| 39 | Norma Lifferth | 12 | Daughter | — | Wisconsin |
| 40 | Robert Derleth | 23 | Brother | Manager | Wisconsin |
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)