RD
Robert Davidson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Ramsey-County, Minnesota
Our Model Tree links this Robert Davidson across the 1920, 1930 and 1940 US Censuses in Ramsey-County, Minnesota (XGBoost, ~Confirmed), with identified parents Carl & Earl — first a son (b.~1919), then head of a 6-person household.
Age 21
b. ~1919
Male
Son
Born: Minnesota
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Ramsey-County, Minnesota |
| Surname | Davidson |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | ST. PAUL CITY |
| 1935 Residence (County) | RAMSEY |
| Additional Details | |
| Occupation | Painter |
| Industry | Private Contractor |
| Class of Worker | PW |
| Hours Worked | 8 |
| Highest Grade | C-250 |
| 1935 Residence | Same House |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Occupation | Painter |
| Township / Ward | St Paul City |
| Est. Birth Year | ~1919 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Earl Davidson | Head | — | 53 | ~1887 |
| Arthur Duges | Other | — | 32 | ~1908 |
| Doris Davidson | Daughter | — | 25 | ~1915 |
| Robert Davidson | Son | — | 21 | ~1919 |
| Vonna Davidson | Daughter | — | 17 | ~1923 |
| Eva Davidson | Spouse | — | 48 | ~1892 |
Census Appearances
1920
Ramsey, Minnesota
Son, age 1
Ramsey, Minnesota · implied b. ~1919 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davidson |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Minnesota |
| Mother's Birthplace | Iowa |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1930
Ramsey, Minnesota
Son, age 11
Ramsey, Minnesota · implied b. ~1919 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davidson |
| Given Name | Robert G |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Minnesota |
| Mother's Birthplace | Iowa |
| Can Read/Write | Yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1940
Ramsey-County, Minnesota
Son, age 21
Ramsey-County, Minnesota · implied b. ~1919 — 6 household members
| Surname | Davidson |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | ST. PAUL CITY |
| 1935 Residence (County) | RAMSEY |
| Occupation | Painter |
| Industry | Private Contractor |
| Class of Worker | PW |
| Hours Worked | 8 |
| Highest Grade | C-250 |
| 1935 Residence | Same House |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
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 Carl Davidson (~0.92 confidence) and father Earl Davidson (~0.92 confidence) and father Carl Davidson (~0.92 confidence) and mother Cora Davidson (~0.92 confidence) and mother Eva Davidson (~0.92 confidence) and mother Eva Davidson (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Carl Davidson
b. ~1882
Source father
● Household
· direct · ~0.92
Father
Earl Davidson
b. ~1887
Source father
● Household
· direct · ~0.92
Father
Carl Davidson
b. ~1892
Source father
● Household
· direct · ~0.92
Mother
Cora Davidson
b. ~1892
Source mother
● Household
· direct · ~0.92
Mother
Eva Davidson
b. ~1892
Source mother
● Household
· direct · ~0.92
Mother
Eva Davidson
b. ~1892
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Davidson
Son · 1940 · age 21 · b. ~1919 · Minnesota
★ You are viewing this record
Sibling
Vonna Davidson
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Doris Davidson
Sibling · 1940 · age 25
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 — Ramsey-County, Minnesota
Open full size
1940 US Federal Census — Ramsey-County, Minnesota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01998-00064)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Diane Arries | 5 | Daughter | — | Minnesota |
| 2 | Douglas Arries | 3 | Son | — | Minnesota |
| 3 | Harvey Hallbroke | 50 | Head | Porter | Mississippi |
| 4 | Margaret Hallbroke | 34 | Wife | — | Canada-English |
| 5 | Sylvester Whitlock | 47 | Lodger | Porter | Kentucky |
| 6 | Earl A. Davidson | 53 | Head | Merchant | Minnesota |
| 7 | Eva R. Davidson | 48 | Wife | Cook | Iowa |
| 8 | Doris M. Davidson | 25 | Daughter | Beauty Operator | Minnesota |
| 9 | Robert Davidson THIS PERSON | 21 | Son | Painter | Minnesota |
| 10 | Vonna Paul Davidson | 17 | Daughter | Index Clerk | Minnesota |
| 11 | Arthur Duges | 32 | Lodger | Piano Tunner | Maryland |
| 12 | Emilie R. Taylor | 62 | Head | — | Minnesota |
| 13 | Harry Johnson | 33 | Head | Salesman | Minnesota |
| 14 | Gladys Johnson | 35 | Wife | — | Wisconsin |
| 15 | David Montgomery | 53 | Head | Accountant | Scotland |
| 16 | May Montgomery | 50 | Wife | — | England |
| 17 | Walter Montgomery | 25 | Son | Assist Manager | Minnesota |
| 18 | Frances Montgomery | 18 | Daughter | New Worker | Minnesota |
| 19 | James L. Mcdinnity | 24 | Head | Sales Clerk | Minnesota |
| 20 | Alice Mcdinnity | 21 | Wife | Sales Clerk | Wisconsin |
| 21 | Richard Steinman | 68 | Head | Salesman | Illinois |
| 22 | Daisy Steinman | 58 | Wife | — | Ohio |
| 23 | Robert Steinman | 31 | Son | Painter Paperhanger | Minnesota |
| 24 | William E. Herrmann | 47 | Head | Tailor | Minnesota |
| 25 | Dorothy A. Herrmann | 36 | Sister | Office Worker | Minnesota |
| 26 | Hyman Abramovitz | 33 | Head | Coat Cutter | Minnesota |
| 27 | Ray Abramovitz | 25 | Wife | — | Russia |
| 28 | Howard L. Abramovitz | 5 | Son | — | Minnesota |
| 29 | Louis G. Harper | 51 | Head | Furrier | Romania |
| 30 | Miriam Harper | 21 | Wife | — | Poland |
| 31 | Charles David Harper | 1 | Son | 0 | Minnesota |
| 32 | Harry D. Hemmety | 38 | Head | Pharmacist | Minnesota |
| 33 | Sofie Hemmety | 35 | Wife | — | Minnesota |
| 34 | Mary Ann Hemmety | 13 | Daughter | — | Minnesota |
| 35 | Gloria Belle Hemmety | 11 | Daughter | — | Minnesota |
| 36 | Oscar H. Hoeppner | 38 | Head | Manager | Minnesota |
| 37 | Freda Hoeppner | 39 | Wife | — | Minnesota |
| 38 | Harvey Hoeppner | 11 | Son | — | Minnesota |
| 39 | Dorothy Hoeppner | 11 | Daughter | — | Minnesota |
| 40 | Lucille Hoeppner | 6 | Daughter | — | Minnesota |
Pedigree Summary
Robert + 2 siblings
Gen 1 · 6 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)