JD
John Davis — 1930 US Census Record
Model Tree available1930 United States Federal Census · Denver, Colorado
Our Model Tree links this John Davis across the 1910, 1920 and 1930 US Censuses in Denver, Colorado (XGBoost, ~Confirmed), with identified parents Henrietta & Elizabeth — first a head (b.~1900), then head of a 3-person household.
Age 30
b. ~1900
Male
Head
Born: Kansas
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Denver, Colorado |
| Surname | Davis |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Kansas |
| Age at First Marriage | 22 |
| Father's Birthplace | Kansas |
| Mother's Birthplace | Kansas |
| Additional Details | |
| Occupation | Mechanic |
| Industry | Automobile |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 15.00 |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
| Occupation | Mechanic |
| Township / Ward | Denver City |
| Est. Birth Year | ~1900 |
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.
3 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Emma Davis | Daughter | — | 2 | ~1928 |
| John Davis | Head | — | 30 | ~1900 |
| Nellie Davis | Spouse | — | 22 | ~1908 |
Census Appearances
1910
Denver, Colorado
Son, age 10
Denver, Colorado · implied b. ~1900 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Kansas |
| Father's Birthplace | Kansas |
| Mother's Birthplace | Kansas |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
1920
Denver, Colorado
Son, age 20
Denver, Colorado · implied b. ~1900 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Kansas |
| Father's Birthplace | Kansas |
| Mother's Birthplace | Kansas |
| Occupation | Porter |
| Industry | Rail Road |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
1930
Denver, Colorado
Head, age 30
Denver, Colorado · implied b. ~1900 — 3 household members
| Surname | Davis |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | Black |
| Age | 30 |
| Marital Status | Married |
| Birthplace | Kansas |
| Age at First Marriage | 22 |
| Father's Birthplace | Kansas |
| Mother's Birthplace | Kansas |
| Occupation | Mechanic |
| Industry | Automobile |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 15.00 |
| Birth State | Kansas |
| Birth Country | United States |
| Birthplace (normalized) | kansas |
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 Davis across 3 US Census years (1910, 1920 and 1930) in Denver, Colorado, using XGBoost record linkage. Identified parents: mother Henrietta Davis (~0.92 confidence) and mother Elizabeth Ross (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Henrietta Davis
b. ~1877
Source mother
● Household
· direct · ~0.92
Mother
Elizabeth Ross
b. ~1870
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Davis
Head · 1930 · age 30 · b. ~1900 · Colorado
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Denver, Colorado
Open full size
1930 US Federal Census — Denver, Colorado
Page Contents
42 people indexed on this census page (ia:1930:15thcensus239unitrs:0526)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Eva Mumba | 30 | Head | Maid | Texas |
| 2 | James L. Grant | 24 | Head | Waiter | Texas |
| 3 | Alpha Grant | 18 | Wife | — | Colorado |
| 4 | Billie Grant | 2 | Son | — | Colorado |
| 5 | Charles Grant | 0 | Son | — | Colorado |
| 6 | Ella M. Rodgers | 23 | Head | Servant | Louisiana |
| 7 | Dorine Rodgers | 4 | Daughter | — | Arkansas |
| 8 | John Davis THIS PERSON | 30 | Head | Mechanic | Kansas |
| 9 | Nellie Davis | 22 | Wife | — | Colorado |
| 10 | Emma Davis | 2 | Daughter | — | Colorado |
| 11 | Ernest Gibson | 23 | Head | Mechanic | Colorado |
| 12 | Edna Gibson | 20 | Wife | — | Louisiana |
| 13 | James Gibson | 39 | Head | Maid | Nebraska |
| 14 | Mabel Arbuckle | 23 | Lodger | Maid | Canada |
| 15 | James Arbuckle | 5 | Lodger | — | Colorado |
| 16 | William Sims | 37 | Head | Shoemaker | Tennessee |
| 17 | Lula Sims | 30 | Wife | — | Illinois |
| 18 | William White | 24 | Lodger | Barber | Texas |
| 19 | George Douglas | 50 | Lodger | Porter | Texas |
| 20 | Lincoln Allen | 47 | Head | Minister | Louisiana |
| 21 | Robert Trotman | 27 | Head | Servant | Virginia |
| 22 | Murrill Trotman | 6 | Daughter | — | Virginia |
| 23 | Nancy Horsall | 55 | Head | Laundress | North Carolina |
| 24 | Henry Tillman | 19 | Lodger | Dishwasher | Missouri |
| 25 | Lewis Dauth | 76 | Head | — | Germany |
| 26 | Bertha Dauth | 69 | Wife | — | Kansas |
| 27 | Irene Williams | 33 | Daughter | — | Colorado |
| 28 | Jacqueline Williams | 10 | Granddaughter | — | Colorado |
| 29 | Howard Wilson | 56 | Head | Porter | Kentucky |
| 30 | Velma Wilson | 40 | Wife | — | Texas |
| 31 | Edward Kelly | 51 | Head | Porter | Texas |
| 32 | Idelia Kelly | 46 | Wife | — | Arkansas |
| 33 | Sarah Kelly | 10 | Daughter | — | Colorado |
| 34 | Benjamin Wallace | 33 | Head | Janitor | Texas |
| 35 | Rosa B. Wallace | 37 | Wife | Seamstress | Texas |
| 36 | Thomas Rand E. Wallace | 22 | Step son | Porter | Texas |
| 37 | George Ridge | 42 | Head | Coach Cleaner | Kansas |
| 38 | Lillian Ridge | 32 | Wife | Cook | Kansas |
| 39 | Claude Dudley | 64 | Head | Teamster | Florida |
| 40 | Emma Dudley | 60 | Wife | — | Alabama |
| 41 | William Bradley | 33 | Head | Washing | South Carolina |
| 42 | Gertrude Bradley | 20 | Wife | — | South Carolina |
Related Census Records
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 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)