JD
Julia Davis — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Sacramento, California
Our Model Tree links this Julia Davis across the 1910, 1920 and 1930 US Censuses in Sacramento, California (XGBoost, ~Confirmed) — first a spouse (b.~1877), then head of a 8-person household.
Age 53
b. ~1877
Female
Spouse
Born: California
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Sacramento, California |
| Surname | Davis |
| Given Name | Julia |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | California |
| Age at First Marriage | 24 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Vermont |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Township / Ward | Sacramento City |
| 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.
8 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Julia | Age | Birth yr |
|---|---|---|---|---|
| Legrand Davis | Head | — | 56 | ~1874 |
| Jack Purdy | Other | — | 11 | ~1919 |
| Harry Demmell | Other | — | 35 | ~1895 |
| Augusta Brown | Other | — | 72 | ~1858 |
| Elmer Demmell | Son | — | 1 | ~1929 |
| Leonard Demmell | Son | — | 3 | ~1927 |
| Julia Davis | Spouse | — | 53 | ~1877 |
| Elizabeth Demmell | Spouse | — | 32 | ~1898 |
Census Appearances
1910
Sacramento, California
Spouse, age 33
Sacramento, California · implied b. ~1877 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Julia L. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | California |
| Years Married | 10 |
| Children Born | 2 |
| Children Living | 2 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Michigan |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1920
Sacramento, California
Spouse, age 43
Sacramento, California · implied b. ~1877 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Davis |
| Given Name | Julia A. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | California |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Massachusetts |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1930
Sacramento, California
Spouse, age 53
Sacramento, California · implied b. ~1877 — 8 household members
| Surname | Davis |
| Given Name | Julia |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | California |
| Age at First Marriage | 24 |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Vermont |
| Can Read/Write | Yes |
| 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 Julia Davis across 3 US Census years (1910, 1920 and 1930) in Sacramento, California, using XGBoost record linkage.
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This person
Anchor record
Julia Davis
Spouse · 1930 · age 53 · b. ~1877 · California
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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 — Sacramento, California
Open full size
1930 US Federal Census — Sacramento, California
Page Contents
39 people indexed on this census page (ia:1930:californiacensus00reel186:0098)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 6 | Sonnet Lilly | 21 | Roomer | Mechanic | Washington |
| 7 | George Williamson | 67 | Head | Gardner | California |
| 8 | Dora L Williamson | 73 | Wife | — | Ohio |
| 9 | Jean Belt | 52 | Roomer | Laundryman | France |
| 10 | Chas H Mccombridge | 68 | Head | Carpenter | California |
| 11 | Miriam Mccombridge | 61 | Wife | — | California |
| 12 | Anna Vose | 78 | Mother-in-law | — | Connecticut |
| 13 | Legrand Davis | 56 | Head | Car Repairer | California |
| 14 | Julia Davis THIS PERSON | 53 | Wife | — | California |
| 15 | Jack Purdy | 11 | Nephew | — | California |
| 16 | Harry Demmell | 35 | R | Laborer | Germany |
| 17 | Elizabeth M Demmell | 32 | Wife | Housewife | Ohio |
| 18 | Leonard Demmell | 3 | Son | — | Ohio |
| 19 | Elmer Demmell | 1 | Son | — | Ohio |
| 20 | Augusta Brown | 72 | O | — | New York |
| 22 | Peter M Hillauer | 59 | Head | Salesman | Pennsylvania |
| 23 | Mary W Hillauer | 52 | Wife | — | California |
| 24 | Elmer Davis | 34 | Head | Mechanic | California |
| 25 | Willa F Davis | 27 | Wife | — | California |
| 26 | Burton E Davis | 3 | Son | — | California |
| 27 | William E Davis | 1 | Son | — | California |
| 28 | Louis B Beach | 56 | Head | Conductor | Missouri |
| 29 | Evelyn Beach | 51 | Wife | — | California |
| 31 | William Koch | 48 | Head | Printer | California |
| 32 | Alice A Koch | 46 | Wife | Housewife | California |
| 33 | Arnold W Koch | 22 | Son | Fireman | California |
| 34 | Alice Alice Koch | 14 | Daughter | — | California |
| 35 | Mary Louise Koch | 10 | Daughter | — | California |
| 36 | Evelyn Cordani | 11 | Boarder | — | California |
| 38 | Louis Miro | 48 | Head | Laundryman | France |
| 39 | Honorine Miro | 48 | Wife | — | France |
| 40 | Lawrence Deforge | 27 | Daughter | Worker | California |
| 41 | Alice Deforge | 6 | Daughter | — | California |
| 42 | Bill Deforge | 2 | Son | — | California |
| 43 | Renee Miro | 21 | Son | Messenger | California |
| 44 | Marguerite Miro | 17 | Daughter | — | California |
| 45 | Marie Miro | 13 | Daughter | — | California |
| 46 | William H Koch | 24 | Head | Operator | California |
| 47 | Mary E Koch | 23 | Wife | Teacher | California |
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)