RD
Robert Davidson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Milwaukee-County, Wisconsin
Our Model Tree links this Robert Davidson across the 1920, 1930 and 1940 US Censuses in Milwaukee-County, Wisconsin (XGBoost, ~Confirmed), with identified parents Peter & Walter — first a son (b.~1917), then head of a 4-person household.
Age 23
b. ~1917
Male
Son
Born: Wisconsin
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Milwaukee-County, Wisconsin |
| Surname | Davidson |
| Given Name | Robert J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| 1935 Residence (City) | Shorewood |
| 1935 Residence (County) | Milwaukee |
| Additional Details | |
| Hours Worked | 0 |
| Income (1939) | 0 |
| Highest Grade | C 5 |
| 1935 Residence | Same place |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
| Township / Ward | Shorewood |
| Est. Birth Year | ~1917 |
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 |
|---|---|---|---|---|
| Walter Davidson | Head | — | 63 | ~1877 |
| Emma Davidson | Spouse | — | 56 | ~1884 |
| Kathryn Dronolka | Other | — | 48 | ~1892 |
| Robert Davidson | Son | — | 23 | ~1917 |
Census Appearances
1920
Milwaukee, Wisconsin
Son, age 2
Milwaukee, Wisconsin · implied b. ~1918 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davidson |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | Wisconsin |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1930
Milwaukee, Wisconsin
Son, age 13
Milwaukee, Wisconsin · implied b. ~1917 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davidson |
| Given Name | Robert J. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| Father's Birthplace | Wisconsin |
| Mother's Birthplace | Wisconsin |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Wisconsin |
| Birth Country | United States |
| Birthplace (normalized) | wisconsin |
1940
Milwaukee-County, Wisconsin
Son, age 23
Milwaukee-County, Wisconsin · implied b. ~1917 — 4 household members
| Surname | Davidson |
| Given Name | Robert J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Wisconsin |
| 1935 Residence (City) | Shorewood |
| 1935 Residence (County) | Milwaukee |
| Hours Worked | 0 |
| Income (1939) | 0 |
| Highest Grade | C 5 |
| 1935 Residence | Same place |
| 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 Robert Davidson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Peter Davidson (~0.92 confidence) and father Walter Davidson (~0.92 confidence) and mother Emma Davidson (~0.92 confidence) and mother Emma Davidson (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Peter Davidson
b. ~1877
Source father
● Household
· direct · ~0.92
Father
Walter Davidson
b. ~1877
Source father
● Household
· direct · ~0.92
Mother
Emma Davidson
b. ~1884
Source mother
● Household
· direct · ~0.92
Mother
Emma Davidson
b. ~1884
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Davidson
Son · 1940 · age 23 · b. ~1917 · Wisconsin
★ 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 — Milwaukee-County, Wisconsin
Open full size
1940 US Federal Census — Milwaukee-County, Wisconsin
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04501-00723)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Anna M. Hout | 53 | Wife | — | Germany |
| 42 | Jane A. Hout | 22 | Daughter | Teacher | Wisconsin |
| 43 | G. Frank Risley | 55 | Head | Salesman | Wisconsin |
| 44 | Loretta M. Risley | 41 | Wife | — | Wisconsin |
| 45 | G. Frank Jr. Risley | 16 | Son | — | Wisconsin |
| 46 | Mary Elizabeth Risley | 11 | Daughter | — | Wisconsin |
| 47 | Gilbert J. Dr. Rich | 46 | Head | Psychiatrist | New York |
| 48 | Marion K. Rich | 44 | Wife | — | Maryland |
| 49 | Joseph M. A. Rich | 19 | Son | — | Iowa |
| 50 | Eugene L. Mcintyre | 60 | Head | Attorney | Wisconsin |
| 51 | John K. Mcintyre | 22 | Son | — | Wisconsin |
| 52 | Robert E. Mcintyre | 19 | Son | — | Wisconsin |
| 53 | Max E. Baumberger | 60 | Head | Salesman | Switzerland |
| 54 | Maude S. Baumberger | 59 | Wife | — | Wisconsin |
| 55 | Charles H. O. Riefer | 51 | Head | Secretary-Treasurer | Switzerland |
| 56 | Gertrude W. Riefer | 48 | Wife | — | Michigan |
| 57 | Otto Betel | 63 | Head | Salesman | Wisconsin |
| 58 | Lucy Betel | 65 | Wife | — | Wisconsin |
| 59 | Fred O. Betel | 27 | Son | Salesman | Wisconsin |
| 60 | William C. Wagner | 30 | Head | Executive | Wisconsin |
| 61 | Dorothy Lou Wagner | 24 | Wife | — | Wisconsin |
| 62 | Judith Ann Wagner | 3 | Daughter | — | Wisconsin |
| 63 | Albert J. Berend | 57 | Head | Owner | Wisconsin |
| 64 | Martha Berend | 56 | Wife | — | Wisconsin |
| 65 | Walter Caro | 42 | Head | Mfg. Agent | Germany |
| 66 | Elizabeth Caro | 36 | Wife | — | Germany |
| 67 | James W. Caro | 4 | Son | — | Wisconsin |
| 68 | Francis G. Caro | 3 | Son | — | Wisconsin |
| 69 | Elizabeth L. Caro | 2 | Daughter | — | Wisconsin |
| 70 | Jules F. Weeks | 21 | Son | — | Wisconsin |
| 71 | Lewis S. Butler | 71 | Head | Salesman | Wisconsin |
| 72 | Sarah Agnes Butler | 62 | Wife | — | Tennessee |
| 73 | Lewis S. Jr. Butler | 31 | Son | Dentist | Wisconsin |
| 74 | Katherine Butler | 34 | Daughter | — | Wisconsin |
| 75 | Wilma Petersen | 52 | Head | Manager | Germany |
| 76 | Joseph Kuhn | 48 | Lodger | Laborer | Germany |
| 77 | Walter H. Davidson | 63 | Head | President | Wisconsin |
| 78 | Emma R. Davidson | 56 | Wife | — | Wisconsin |
| 79 | Robert J. Davidson THIS PERSON | 23 | Son | — | Wisconsin |
| 80 | Kathryn S. Dronolka | 48 | Servant | Housework | Wisconsin |
Pedigree Summary
Robert
Gen 1 · 4 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)