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John Roche — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Los Angeles, California
Our Model Tree links this John Roche across the 1930 and 1940 US Censuses in Los Angeles, California (XGBoost, ~Confirmed) — first a son (b.~1925), then head of a 6-person household.
Age 5
b. ~1925
Male
Son
Born: California
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Los Angeles, California |
| Surname | Roche |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Illinois |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Township / Ward | Santa Monica City |
| Est. Birth Year | ~1925 |
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.
6 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Anna Roche | Spouse | — | 42 | ~1888 |
| Arthur Roche | Head | — | 59 | ~1871 |
| Florence Roche | Daughter | — | 10 | ~1920 |
| John Roche | Son | — | 5 | ~1925 |
| William Roche | Son | — | 9 | ~1921 |
| Robert Roche | Son | — | 7 | ~1923 |
Census Appearances
1930
Los Angeles, …
Son, age 5
Los Angeles, California · implied b. ~1925 — 6 household members
| Surname | Roche |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Illinois |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
Los-Angeles-County, California
Son, age 14
Los-Angeles-County, California · implied b. ~1926 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Rooke |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | California |
| 1935 Residence (City) | Santa Monica City |
| 1935 Residence (County) | Los Angeles |
| Industry | 0 |
| Highest Grade | No 7 |
| 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 John Roche across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Roche
Son · 1930 · age 5 · b. ~1925 · California
★ You are viewing this record
Sibling
William Roche
Sibling · 1930 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Roche
Sibling · 1930 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Florence Roche
Sibling · 1930 · age 10
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 — Los Angeles, California
Open full size
1930 US Federal Census — Los Angeles, California
Page Contents
50 people indexed on this census page (ia:1930:californiacensus00reel175:0178)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Louis A Ray | 49 | Head | Carpenter | North Carolina |
| 52 | Basha Ray | 52 | Wife | — | North Carolina |
| 53 | Harry Ray | 19 | Son | — | Oklahoma |
| 54 | Claude Ray | 17 | Son | — | Colorado |
| 55 | Claude Ray | 17 | Son | — | Colorado |
| 56 | Lena Ray | 14 | Daughter | — | Colorado |
| 57 | Winfield H Dudley | 37 | Head | Proprietor | Kentucky |
| 58 | Elnora Dudley | 37 | Wife | — | Tennessee |
| 59 | Doris E Dudley | 14 | Daughter | — | Washington |
| 60 | Oscar Reuter | 31 | Head | Carpenter | South Dakota |
| 61 | Helen Reuter | 25 | Wife | — | United States |
| 62 | Helen Jr Reuter | 9 | Daughter | — | California |
| 63 | Marie Reuter | 8 | Daughter | — | California |
| 64 | Margery Reuter | 6 | Daughter | — | California |
| 65 | Ruth White | 31 | Head | Salesman | Missouri |
| 66 | Kathryn E White | 31 | Wife | — | Pennsylvania |
| 67 | Betty White | 5 | Daughter | — | Pennsylvania |
| 68 | Frank Dichenor | 57 | Head | Retired | Michigan |
| 69 | Grace Dichenor | 58 | Wife | — | Michigan |
| 70 | Fred G Pfeiffer | 50 | Head | Draftsman | Wisconsin |
| 71 | Sarah H Pfeiffer | 43 | Wife | — | Wisconsin |
| 72 | Doreda Pfeiffer | 18 | Daughter | — | Wisconsin |
| 73 | Boyd Pfeiffer | 11 | Son | — | California |
| 74 | Arthur Peterson | 62 | Head | — | Sweden |
| 75 | Henrietta Peterson | 62 | Wife | — | Sweden |
| 76 | Paul J Peterson | 31 | Son | Salesman | Pennsylvania |
| 77 | Malcolm Logan | 57 | Head | Baker | Scotland |
| 78 | Catherine Logan | 57 | Wife | — | Scotland |
| 79 | Francis Logan | 25 | Son | Baker | Scotland |
| 80 | Malcolm Logan | 22 | Son | Baker | Scotland |
| 81 | Peter F K Grimson | 29 | Son-in-law | Bank Teller | Scotland |
| 82 | Elizabeth Grimson | 29 | Daughter | — | Scotland |
| 83 | John M Grimson | 2 | Grandson | — | California |
| 84 | Catherine M Grimson | 0 | Granddaughter | — | California |
| 85 | George Dichenor | 27 | Head | Teacher | Michigan |
| 86 | Huldah Dichenor | 26 | Wife | — | Michigan |
| 87 | Barbara Dichenor | 5 | Daughter | — | California |
| 88 | George Dichenor | 1 | Son | — | California |
| 89 | Arthur Roche | 59 | Head | Contractor | Massachusetts |
| 90 | Anna Roche | 42 | Wife | — | Illinois |
| 91 | Florence Roche | 10 | Daughter | — | Illinois |
| 92 | William Roche | 9 | Son | — | Illinois |
| 93 | Robert Roche | 7 | Son | — | Illinois |
| 94 | John Roche THIS PERSON | 5 | Son | — | California |
| 95 | William A Pritt | 45 | Head | Salesman | New Jersey |
| 96 | Alice R Pritt | 40 | Wife | — | South Dakota |
| 97 | Barbara Pritt | 15 | Daughter | — | California |
| 98 | Layton Deacon | 27 | Head | Salesman | Iowa |
| 99 | Doris Deacon | 28 | Wife | — | Iowa |
| 100 | Elaine Deacon | 2 | Daughter | — | Iowa |
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)