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Harry Davis — 1930 US Census Record
Model Tree available1930 United States Federal Census · Alameda, California
Our Model Tree links this Harry Davis across the 1920, 1930 and 1940 US Censuses in Alameda, California (XGBoost, ~Confirmed), with identified parents Morris & Lydia — first a son (b.~1915), then head of a 7-person household.
Age 15
b. ~1915
Male
Son
Born: California
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Alameda, California |
| Surname | Davis |
| Given Name | Harry |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Hungary |
| Mother's Birthplace | Hungary |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Township / Ward | Oakland City |
| Est. Birth Year | ~1915 |
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.
7 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Harry | Age | Birth yr |
|---|---|---|---|---|
| Helen Davidson | Daughter | — | 24 | ~1906 |
| Gilda Davis | Daughter | — | 16 | ~1914 |
| Sarah Davis | Daughter | — | 13 | ~1917 |
| Morris Davis | Head | — | 46 | ~1884 |
| Ellwood Davidson | Other | — | 4 | ~1926 |
| Harry Davis | Son | — | 15 | ~1915 |
| Julia Davis | Spouse | — | 45 | ~1885 |
Census Appearances
Son, age 4
Alameda, California · implied b. ~1916 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Henry |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Hungary |
| Mother's Birthplace | Hungary |
| Occupation | none |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1930
Alameda, California
Son, age 15
Alameda, California · implied b. ~1915 — 7 household members
| Surname | Davis |
| Given Name | Harry |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Hungary |
| Mother's Birthplace | Hungary |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
Son, age 25
Alameda-County, California · implied b. ~1915 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Harold |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Oakland City |
| 1935 Residence (County) | Alameda |
| Occupation | Electrician helper |
| Industry | Ship yard |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1008 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same Place |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
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 Harry Davis across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Morris Davis (~0.92 confidence) and mother Lydia Davis (~0.92 confidence) and father Joseph Davis (~0.92 confidence) and mother Julia Davis (~0.92 confidence) and mother Mary Davis (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Morris Davis
b. ~1883
Source father
● Household
· direct · ~0.92
Mother
Lydia Davis
b. ~1884
Source mother
● Household
· direct · ~0.92
Father
Joseph Davis
b. ~1885
Source father
● Household
· direct · ~0.92
Mother
Julia Davis
b. ~1885
Source mother
● Household
· direct · ~0.92
Mother
Mary Davis
b. ~1888
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Harry Davis
Son · 1930 · age 15 · b. ~1915 · California
★ You are viewing this record
Sibling
Gilda Davis
Sibling · 1930 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Sarah Davis
Sibling · 1930 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Davidson
Sibling · 1930 · age 24
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
1930 US Federal Census — Alameda, California
Open full size
1930 US Federal Census — Alameda, California
Page Contents
50 people indexed on this census page (ia:1930:15thcensuspopula104unit:0360)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Henry Knight | 75 | Head | — | England |
| 2 | Emily Ann Knight | 73 | Wife | — | England |
| 3 | John K. Peterson | 35 | Head | Bartender | Louisiana |
| 4 | Ruby M. Peterson | 36 | Wife | — | Alabama |
| 5 | Francis V. Patrick | 61 | Head | — | England |
| 6 | Dorothy M. Patrick | 34 | Daughter | Clerk | Canada English |
| 7 | Nathan H. Miller | 32 | Head | Attorney | Russia |
| 8 | Edith E. Miller | 28 | Wife | — | Russia |
| 9 | Donald G. Miller | 2 | Son | — | California |
| 10 | Stanley L. Miller | 0 | Son | — | California |
| 11 | Mark H. Gregg | 50 | Head | Superintendent | Colorado |
| 12 | Elsie M. Gregg | 47 | Wife | — | Colorado |
| 13 | Mark H. Jr. Gregg | 20 | Son | — | California |
| 14 | Mary Gregg | 18 | Daughter | — | California |
| 15 | Vernon Hall | 57 | Head | — | Kansas |
| 16 | Lorimer Katherine Hall | 27 | Daughter | Bookkeeper | Missouri |
| 17 | Ruth Hall | 9 | Grandson | — | California |
| 18 | James F. Vois | 31 | Son-in-law | Salesman | Michigan |
| 19 | Cornelia H. Vois | 21 | Daughter | — | Missouri |
| 20 | James F. Jr. Vois | 2 | Grandson | — | California |
| 21 | James J. Banks | 52 | Brother | Bookkeeper | Kansas |
| 22 | Frank E. Gilliam | 37 | Head | Salesman | California |
| 23 | Florence G. Gilliam | 30 | Wife | — | Washington |
| 24 | Jane L. Gilliam | 1 | Daughter | — | Oregon |
| 25 | Emma Gould | 53 | Mother-in-law | — | Iowa |
| 26 | John O. Bardin | 44 | Head | Asst. Cashier | Minnesota |
| 27 | Renee G. Bardin | 50 | Wife | — | California |
| 28 | Harry V. Lanty | 45 | Head | Asst. Cashier | California |
| 29 | Mabel Lanty | 40 | Wife | — | California |
| 30 | Harry V. Jr. Lanty | 13 | Son | — | California |
| 31 | Donald J. Lanty | 11 | Son | — | California |
| 32 | Evelyn Turner | 14 | Boarder | — | California |
| 33 | Ann Lanty | 67 | Mother-in-law | — | Ireland |
| 34 | Morris Davis | 46 | Head | Dealer | Hungary |
| 35 | Julia Davis | 45 | Wife | — | Hungary |
| 36 | Gilda Davis | 16 | Daughter | — | California |
| 37 | Harry Davis THIS PERSON | 15 | Son | — | California |
| 38 | Sarah Davis | 13 | Daughter | — | California |
| 39 | Helen Davidson | 24 | Daughter | — | Hungary |
| 40 | Ellwood R. Davidson | 4 | Grandson | — | California |
| 41 | Felix H. Mussack | 65 | Head | — | Germany |
| 42 | Anna S. Mussack | 54 | Wife | — | Minnesota |
| 43 | Arthur S. Mussack | 32 | Son | Broker | Minnesota |
| 44 | Marjorie Harnack | 21 | Niece | Teacher | California |
| 45 | Ada D. Stevenson | 71 | Head | — | California |
| 46 | Frank S. Stevenson | 32 | Son | Draftsman | Texas |
| 47 | Charles E. Hickey | 61 | Head | — | England |
| 48 | Marguerite N. Boos | 37 | Daughter | Buyer | Nebraska |
| 49 | Knox Boos | 9 | Grandson | — | California |
| 50 | Philip E. Anderson | 36 | Head | Demonstrator | Michigan |
Related Census Records
Pedigree Summary
Harry + 3 siblings
Gen 1 · 5 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)