JD
John Davidson — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Graham, Arizona
Our Model Tree links this John Davidson across the 1910, 1920 and 1930 US Censuses in Graham, Arizona (XGBoost, ~Confirmed) — first a head (b.~1877), then head of a 4-person household.
Age 53
b. ~1877
Male
Head
Born: Mississippi
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Graham, Arizona |
| Surname | Davidson |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Mississippi |
| Age at First Marriage | 25 |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Georgia |
| Additional Details | |
| Occupation | Farmer |
| Industry | Own Farm |
| Class of Worker | E |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 2000 |
| Birth State | Mississippi |
| Birth Country | United States |
| Birthplace (normalized) | mississippi |
| Occupation | Farmer |
| Township / Ward | Safford District |
| Est. Birth Year | ~1877 |
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 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Davidson | Head | — | 53 | ~1877 |
| Edna Davidson | Other | — | 15 | ~1915 |
| Mary Davidson | Other | — | 52 | ~1878 |
| Urlo Davidson | Son | — | 19 | ~1911 |
Census Appearances
1910
Graham, Arizona
Head, age 32
Graham, Arizona · implied b. ~1878 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davidson |
| Given Name | John R |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Mississippi |
| Years Married | 7 |
| Father's Birthplace | United States |
| Mother's Birthplace | Georgia |
| Occupation | Farmer |
| Industry | Own Farm |
| Birth State | Mississippi |
| Birth Country | United States |
| Birthplace (normalized) | mississippi |
1920
Graham, Arizona
Head, age 43
Graham, Arizona · implied b. ~1877 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davidson |
| Given Name | John R. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | Mississippi |
| Father's Birthplace | United States |
| Mother's Birthplace | United States |
| Occupation | Farmer |
| Industry | Farm |
| Class of Worker | OA |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth State | Mississippi |
| Birth Country | United States |
| Birthplace (normalized) | mississippi |
1930
Graham, Arizona
Head, age 53
Graham, Arizona · implied b. ~1877 — 4 household members
| Surname | Davidson |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | Mississippi |
| Age at First Marriage | 25 |
| Father's Birthplace | Alabama |
| Mother's Birthplace | Georgia |
| Occupation | Farmer |
| Industry | Own Farm |
| Class of Worker | E |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 2000 |
| Birth State | Mississippi |
| Birth Country | United States |
| Birthplace (normalized) | mississippi |
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 (1910, 1920 and 1930) in Graham, Arizona, using XGBoost record linkage.
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This person
Anchor record
John Davidson
Head · 1930 · age 53 · b. ~1877 · Arizona
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Graham, Arizona
Open full size
1930 US Federal Census — Graham, Arizona
Page Contents
50 people indexed on this census page (ia:1930:15thcensus56unit:0959)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mollie Fowler | 2 | Daughter | — | Oklahoma |
| 2 | Marvin Jensen | 32 | Head | Farmer | Chihuahua Mexico |
| 3 | Ruth E. Jensen | 25 | Wife-H | — | Arizona |
| 4 | Orson E. Jensen | 6 | Son | — | Arizona |
| 5 | Imogene Jensen | 4 | Daughter | — | Arizona |
| 6 | Geraldine Jensen | 2 | Daughter | — | Arizona |
| 7 | Vernon R. Foote | 61 | — | Farmer | Nevada |
| 8 | Ruth B. Foote | 56 | Wife-H | — | Utah |
| 9 | Bernice R. Foote | 18 | Daughter | — | Arizona |
| 10 | Eva Foote | 18 | Daughter | — | Arizona |
| 11 | Wallace Branch | 40 | — | Farmer | Arizona |
| 12 | Ida Julia Branch | 36 | Wife-H | — | Arizona |
| 13 | Leland Branch | 20 | Son | Mechanic | Arizona |
| 14 | Quinn Branch | 17 | Son | — | Arizona |
| 15 | Geraldine Branch | 7 | Daughter | — | Arizona |
| 16 | John Davidson THIS PERSON | 53 | Head | Farmer | Mississippi |
| 17 | Mary J. Davidson | 52 | Wife-H | — | Idaho |
| 18 | Urlo Davidson | 19 | Son | — | Arizona |
| 19 | Edna Davidson | 15 | Daughter-in-law | — | Arizona |
| 20 | Leslie H. Parsel | 48 | Head | Laborer | Kansas |
| 21 | Leslie O. Parsel | 22 | Wife-Son | Laborer | Oklahoma |
| 22 | Lottie O. Parsel | 17 | Daughter | — | Oklahoma |
| 23 | Lou Neilson | 20 | Head | Plumbing | Utah |
| 24 | Lee Neilson | 20 | Wife-H | — | Arizona |
| 25 | Ray Neilson | 2 | Son | — | Arizona |
| 26 | Glen Root | 53 | Head | Druggist | South Dakota |
| 27 | Maggie Root | 42 | Wife-H | — | Arizona |
| 28 | Jesse Root | 22 | Son | Delivery Clerk | Arizona |
| 29 | Hermione Root | 19 | Daughter | — | Arizona |
| 30 | Louise Root | 15 | Daughter | — | Arizona |
| 31 | Dryden Root | 13 | Son | — | Arizona |
| 32 | Romes Root | 10 | Son | — | Arizona |
| 33 | Marsha M. Root | 8 | Daughter | — | Arizona |
| 34 | Byron Smith | 44 | Head | Trucker | Arizona |
| 35 | Lilla Smith | 35 | Wife-H | — | Arizona |
| 36 | Elwood Smith | 17 | Son | — | Arizona |
| 37 | Arno Smith | 15 | Son | — | Arizona |
| 38 | Janice Smith | 13 | Daughter | — | Arizona |
| 39 | Marguerite Smith | 11 | Daughter | — | Arizona |
| 40 | Paul Smith | 7 | Son | — | Arizona |
| 41 | Otto A. Mack | 37 | Head | Farmer | Colorado |
| 42 | Eunice Mack | 32 | Wife-H | — | Texas |
| 43 | Wallace Kathleen Mack | 9 | Daughter | — | Arizona |
| 44 | Mack Rostel Mack | 5 | Son | — | Arizona |
| 45 | Enrique Romero | 43 | Head | Laborer | Arizona |
| 46 | Jesus Romero | 42 | Wife-H | — | Texas |
| 47 | Manuel R. Romero | 15 | Son | — | Texas |
| 48 | Benito Sotz | 27 | Head | Laborer | Texas |
| 49 | Maria Sotz | 27 | Wife-H | — | Arizona |
| 50 | Antonia Sotz | 1 | Daughter | — | Arizona |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)