RL
Robert Long — 1930 US Census Record
Model Tree available1930 United States Federal Census · Los Angeles, California
Our Model Tree links this Robert Long across the 1910, 1920, 1930 and 1940 US Censuses in Los Angeles, California (XGBoost, ~Confirmed), with identified parents Stephen & Mary — first a son (b.~1909), then head of a 4-person household.
Age 21
b. ~1909
Male
Son
Born: California
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Los Angeles, California |
| Surname | Long |
| Given Name | Robert C |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Missouri |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Township / Ward | Long Beach City Pt |
| Est. Birth Year | ~1909 |
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.
4 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Mary Long | Daughter | — | 18 | ~1912 |
| Stephen Long | Head | — | 65 | ~1865 |
| Mary Long | Other | — | 57 | ~1873 |
| Robert Long | Son | — | 21 | ~1909 |
Census Appearances
1910
Los Angeles, …
Son, age 1
Los Angeles, California · implied b. ~1909 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Long |
| Given Name | Robert O. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Missouri |
| Speaks English | No |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1920
Los Angeles, …
Son, age 11
Los Angeles, California · implied b. ~1909 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Long |
| Given Name | Robert B. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Missouri |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1930
Los Angeles, …
Son, age 21
Los Angeles, California · implied b. ~1909 — 4 household members
| Surname | Long |
| Given Name | Robert C |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Missouri |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1940
Los-Angeles-County, California
Head, age 31
Los-Angeles-County, California · implied b. ~1909 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Long |
| Given Name | Roy R. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | California |
| 1935 Residence (City) | Los Angeles City |
| 1935 Residence (County) | Los Angeles |
| Occupation | Sales Manager |
| Industry | Chain Store |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 2700 |
| 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 Robert Long across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Stephen Long (~0.92 confidence) and mother Mary Long (~0.92 confidence) and mother Ida Long (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Stephen Long
b. ~1865
Source father
● Household
· direct · ~0.92
Mother
Mary Long
b. ~1872
Source mother
● Household
· direct · ~0.92
Mother
Ida Long
b. ~1875
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Long
Son · 1930 · age 21 · b. ~1909 · California
★ You are viewing this record
Sibling
Mary Long
Sibling · 1930 · age 18
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:californiacensus00reel129:0243)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Minnie M Congdon | 49 | Wife-H | — | Missouri |
| 2 | Mary N Congdon | 19 | Daughter | — | California |
| 3 | Lester C Congdon | 16 | Son | — | California |
| 4 | Billie Congdon | 12 | Son | — | California |
| 5 | Chris A Franke | 42 | Head | Contractor | Wisconsin |
| 6 | Hattie Franke | 36 | Wife-H | — | Wyoming |
| 7 | Herman Franke | 19 | Son | Attendant | Colorado |
| 8 | James Jamieson | 21 | Stepson | — | Wyoming |
| 9 | Alberta Jamieson | 19 | Stepdaughter | — | Wyoming |
| 10 | Harry J Perrin | 53 | Head | — | Minnesota |
| 11 | Edith S Perrin | 52 | Wife-H | — | England |
| 12 | Agnes M Perrin | 19 | Daughter | — | Minnesota |
| 13 | Agnes M Serrell | 62 | Sister-in-law | — | England |
| 14 | Elizabeth Kreutzer | 54 | Head-H | — | Iowa |
| 15 | Nellie Swanberg | 43 | Head-H | — | Illinois |
| 16 | Charles J Swanberg | 15 | Son | — | Illinois |
| 17 | Chester C Hosmer | 45 | Head | Mechanical Engineer | Massachusetts |
| 18 | Mary F Hosmer | 37 | Wife-H | — | California |
| 19 | Chester C Jr Hosmer | 14 | Son | — | California |
| 20 | Emma Gray | 66 | Head | — | Wisconsin |
| 21 | Maude Gray | 40 | Daughter | — | Minnesota |
| 22 | Bell Gray | 38 | Daughter | Teacher | Minnesota |
| 23 | Prestel Dodge | 37 | Head | Photographer | Wisconsin |
| 24 | Mariam Dodge | 36 | Wife-H | — | Colorado |
| 25 | Jeanette Dodge | 3 | Daughter | — | Colorado |
| 26 | Mary M Henkel | 64 | Head-H | — | Minnesota |
| 27 | John Henkel | 40 | Son | Broker | Minnesota |
| 28 | Mary Agnes Henkel | 38 | Daughter | Teacher | Minnesota |
| 29 | Herman H Henkel | 35 | Son | Broker | Minnesota |
| 30 | George A Brown | 46 | Head | Bond Clerk | Iowa |
| 31 | Elizabeth A Brown | 38 | Wife-H | — | Pennsylvania |
| 32 | Oliver A Brown | 14 | Son | — | Colorado |
| 33 | Juanita Brown | 11 | Daughter | — | Colorado |
| 34 | Ben Thomas | 74 | Head | — | Kentucky |
| 35 | Olive C Thomas | 71 | Wife-H | — | California |
| 36 | Helen Skipp | 46 | Head-H | Writer | Pennsylvania |
| 37 | Stephen Long | 65 | Head | Judge | Kentucky |
| 38 | Mary Alice Long | 57 | Wife-H | — | Missouri |
| 39 | Robert C Long THIS PERSON | 21 | Son | — | California |
| 40 | Mary A Long | 18 | Daughter | — | California |
| 41 | Alice Noble | 50 | Head-H | — | Pennsylvania |
| 42 | Peter Jeanet | 69 | Head | — | Germany |
| 43 | Marie Jeanet | 62 | Wife-H | — | France |
| 44 | Isaac M Low | 75 | Head | — | Illinois |
| 45 | Ida P Low | 69 | Wife-H | — | Ohio |
| 46 | Ella Van Huff | 62 | Lodger | Teacher | Missouri |
| 47 | Julius Bluhm | 42 | Head | Official | Nebraska |
| 48 | Esther Bluhm | 38 | Wife-H | — | Nebraska |
| 49 | Miles W Middough | 36 | Head | Merchant | Missouri |
| 50 | Helene Middough | 32 | Wife-H | — | Missouri |
Related Census Records
Pedigree Summary
Robert + 1 sibling
Gen 1 · 3 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)