DP
David Parker — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Contra Costa, California
Our Model Tree links this David Parker across the 1930 and 1940 US Censuses in Contra Costa, California (XGBoost, ~Confirmed) — first a son (b.~1929), then head of a 8-person household.
Age 1
b. ~1929
Male
Son
Born: California
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Contra Costa, California |
| Surname | Parker |
| Given Name | David A Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Oregon |
| Mother's Birthplace | New York |
| Additional Details | |
| Can Read/Write | No |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Township / Ward | Richmond |
| Est. Birth Year | ~1929 |
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 David | Age | Birth yr |
|---|---|---|---|---|
| David Parker | Son | — | 1 | ~1929 |
| Norval Parker | Son | — | 5 | ~1925 |
| William Parker | Son | — | 11 | ~1919 |
| Ada Parker | Spouse | — | 30 | ~1900 |
| Eleanor Parker | Daughter | — | 3 | ~1927 |
| David Parker | Head | — | 39 | ~1891 |
| Joe Repple | Other | — | 39 | ~1891 |
| Mary Parker | Daughter | — | 10 | ~1920 |
Census Appearances
1930
Contra Costa, …
Son, age 1
Contra Costa, California · implied b. ~1929 — 8 household members
| Surname | Parker |
| Given Name | David A Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Oregon |
| Mother's Birthplace | New York |
| Can Read/Write | No |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
Contra-Costa-County, California
Son, age 11
Contra-Costa-County, California · implied b. ~1929 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Parker |
| Given Name | Donald |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Oakland |
| 1935 Residence (County) | Alameda |
| Highest Grade | No 7 |
| 1935 Residence | California |
| 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 David Parker across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
David Parker
Son · 1930 · age 1 · b. ~1929 · California
★ You are viewing this record
Sibling
William Parker
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Parker
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eleanor Parker
Sibling · 1930 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Norval Parker
Sibling · 1930 · age 5
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 — Contra Costa, California
Open full size
1930 US Federal Census — Contra Costa, California
Page Contents
50 people indexed on this census page (ia:1930:californiacensus00reel114:0967)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John Solich | 37 | Head | Taxi Driver | Yugoslavia |
| 2 | Catherine Solich | 30 | Wife | — | New York |
| 3 | Jennie M Solich | 11 | Daughter | — | California |
| 4 | Gregory A Solich | 9 | Son | — | California |
| 5 | Steve B Bogomavich | 27 | Brother-in-law | Welder | New York |
| 6 | Martin Konyanin | 51 | Head | Laborer | Yugoslavia |
| 7 | Niccola Moretto | 55 | Head | Laborer | Italy |
| 8 | Clarence A Long | 38 | Head | Ship Mate | California |
| 9 | Louise A Long | 38 | Wife | — | Missouri |
| 10 | Elizabeth V Rhoads | 23 | Sister-in-law | Laundress | California |
| 11 | Claser Quisti | 59 | Head | Laborer | Italy |
| 12 | Norma M Quisti | 17 | Daughter | — | California |
| 13 | Fanny Solich | 64 | Mother | — | Austria |
| 14 | Joe Raffanelli | 35 | Son-in-law | Truck Driver | Austria |
| 15 | Jerry Solich | 29 | Son | Steam Engineer | Austria |
| 16 | Helen Raffanelli | 9 | Niece | — | California |
| 17 | Albert Raffanelli | 7 | Nephew | — | California |
| 18 | Carl W Schmidt | 75 | Head | Machinist | Sweden |
| 19 | Leonardo Candelo | 44 | Head | Laborer | Italy |
| 20 | Rose M Candelo | 35 | Wife | Laborer | Italy |
| 21 | Irma M Candelo | 12 | Daughter | — | California |
| 22 | Sylvia Candelo | 10 | Son | — | California |
| 23 | William P Silva | 25 | Head | Laborer | Portugal |
| 24 | Margaret Y Silva | 21 | Wife | — | Yugoslavia |
| 25 | Manuel Silva | 22 | Brother | Laborer | Portugal |
| 26 | Pete Raviglione | 43 | Head | Laborer | Italy |
| 27 | Adeline Raviglione | 32 | Wife | — | Italy |
| 28 | Angela Raviglione | 4 | Daughter | — | California |
| 29 | Gloria Raviglione | 3 | Daughter | — | California |
| 30 | Giacomo Bruno | 40 | Head | Contractor | Italy |
| 31 | Rosie Bruno | 38 | Wife | Laundress | Italy |
| 32 | Mary Bruno | 17 | Daughter | — | Italy |
| 33 | Emma Bruno | 14 | Daughter | — | Italy |
| 34 | Lilla Bruno | 10 | Daughter | — | Italy |
| 35 | Joseph Campana | 44 | Boarder | Laborer | Italy |
| 36 | John Tobocco | 45 | Head | Scavenger | Italy |
| 37 | Adelina Tobocco | 35 | Wife | — | Italy |
| 38 | Teresa Tobocco | 16 | Daughter | — | Italy |
| 39 | John Tobocco | 14 | Son | — | Italy |
| 40 | Emma Tobocco | 10 | Son | — | Italy |
| 41 | Alio Tobocco | 8 | Son | — | Italy |
| 42 | David A Parker | 39 | Head | Stillman | Oregon |
| 43 | Ada S Parker | 30 | Wife | — | New York |
| 44 | William E Parker | 11 | Son | — | California |
| 45 | Mary E Parker | 10 | Daughter | — | New York |
| 46 | Norval E Parker | 5 | Son | — | California |
| 47 | Eleanor G Parker | 3 | Daughter | — | California |
| 48 | David A Jr Parker THIS PERSON | 1 | Son | — | California |
| 49 | Joe Repple | 39 | Lodger | Laborer | Italy |
| 50 | Frank Benutto | 39 | Head | Machinist Helper | Italy |
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)