JD
John Davidson — 1940 US Census Record
Model Tree available1940 United States Federal Census · Ramsey-County, Minnesota
Our Model Tree links this John Davidson across the 1920, 1930 and 1940 US Censuses in Ramsey-County, Minnesota (XGBoost, ~Confirmed), with identified parents John & H — first a head (b.~1907), then head of a 5-person household.
Age 33
b. ~1907
Male
Head
Born: Minnesota
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Ramsey-County, Minnesota |
| Surname | Davidson |
| Given Name | John F. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Minnesota |
| 1935 Residence (City) | St Paul City |
| 1935 Residence (County) | Ramsey County |
| Additional Details | |
| Occupation | Packer |
| Industry | Paper box Mfg |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 496 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Occupation | Packer |
| Township / Ward | St Paul City |
| Est. Birth Year | ~1907 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Eleanor Davidson | Daughter | — | 7 | ~1933 |
| John Davidson | Head | — | 33 | ~1907 |
| Roger Davidson | Son | — | 5 | ~1935 |
| John Davidson | Son | — | 9 | ~1931 |
| Louella Davidson | Spouse | — | 37 | ~1903 |
Census Appearances
1920
Ramsey, Minnesota
Son, age 13
Ramsey, Minnesota · implied b. ~1907 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davidson |
| Given Name | John T. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1930
Ramsey, Minnesota
Son, age 23
Ramsey, Minnesota · implied b. ~1907 — 50 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davidson |
| Given Name | John J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Sweden |
| Mother's Birthplace | Sweden |
| Occupation | Machinist |
| Industry | Steam Railroad |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1940
Ramsey-County, Minnesota
Head, age 33
Ramsey-County, Minnesota · implied b. ~1907 — 5 household members
| Surname | Davidson |
| Given Name | John F. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Minnesota |
| 1935 Residence (City) | St Paul City |
| 1935 Residence (County) | Ramsey County |
| Occupation | Packer |
| Industry | Paper box Mfg |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 496 |
| Highest Grade | No 8 |
| 1935 Residence | Same place |
| 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 John Davidson across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Davidson (~0.92 confidence) and mother H Davidson (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Davidson
b. ~1867
Source father
● Household
· direct · ~0.92
Mother
H Davidson
b. ~1880
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Davidson
Head · 1940 · age 33 · b. ~1907 · Minnesota
★ 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 — 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-t0627-02001-00210)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Donald C. Johnson | 25 | Son | Hatter | Minnesota |
| 2 | William V. Terry | 32 | Son | Contractor | Minnesota |
| 3 | Dorothy E. Terry | 31 | Daughter | Cashier | Minnesota |
| 4 | W. J. Stevens | 47 | Head | Stokman | Minnesota |
| 5 | Rose L. Stevens | 51 | Wife | — | Wisconsin |
| 6 | Michael T. Stevens | 13 | Son | — | Minnesota |
| 7 | Thomas Honan | 51 | Head | Proprietor | Pennsylvania |
| 8 | Mabel Honan | 51 | Wife | — | Minnesota |
| 9 | Stanley J. Honan | 26 | Son | Truck Driver | Minnesota |
| 10 | Geraldine E. Honan | 23 | Daughter | Stenographer | Minnesota |
| 11 | Thomas R. Honan | 17 | Son | — | Minnesota |
| 12 | Alfred G. Orloske | 49 | Head | Pressman | Wisconsin |
| 13 | Josephine Orloske | 48 | Wife | — | Poland |
| 14 | Harold G. Orloske | 24 | Son | Stockman | Minnesota |
| 15 | Robert A. Orloske | 21 | Son | Truck Driver | Minnesota |
| 16 | W. J. Kautt | 43 | Head | Fireman | Minnesota |
| 17 | Nora K. Kautt | 44 | Wife | — | Minnesota |
| 18 | William J. Jr. Kautt | 14 | Son | — | Minnesota |
| 19 | Paul Kautt | 13 | Son | — | Minnesota |
| 20 | Joseph Schonberger | 49 | Head | Machinist | South Dakota |
| 21 | Agnes Schonberger | 50 | Wife | — | Minnesota |
| 22 | Marie Schonberger | 20 | Daughter | Sales Lady | Minnesota |
| 23 | Robert Schonberger | 16 | Son | — | Minnesota |
| 24 | John F. Davidson THIS PERSON | 33 | Head | Packer | Minnesota |
| 25 | Louella A. Davidson | 37 | Wife | — | Wisconsin |
| 26 | John L. Davidson | 9 | Son | — | Minnesota |
| 27 | Eleanor L. Davidson | 7 | Daughter | — | Minnesota |
| 28 | Roger F. Davidson | 5 | Son | — | Minnesota |
| 29 | Henry Schmalz | 71 | Head | — | Minnesota |
| 30 | Caroline Schmalz | 68 | Wife | — | Germany |
| 31 | Edwin H. Schmalz | 34 | Son | Truck Driver | Minnesota |
| 32 | C. E. Mcgraw | 45 | Head | Machinery Maintainer | Minnesota |
| 33 | Mary C. Mcgraw | 43 | Wife | — | Minnesota |
| 34 | Norrine M. Mcgraw | 10 | Daughter | — | Minnesota |
| 35 | William J. Mcgraw | 9 | Son | — | Minnesota |
| 36 | Catherine B. Mcgraw | 7 | Daughter | — | Minnesota |
| 37 | Norman E. Mcgraw | 2 | Son | — | Minnesota |
| 38 | Mary Jane Mcgraw | 1 | Daughter | — | Minnesota |
| 39 | Martha Krzmarzick | 44 | Sister-in-law | House Maid | Minnesota |
| 40 | A. W. Cegelske | 35 | Head | Display Man | Minnesota |
Pedigree Summary
John
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)