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George Duncan — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Los Angeles, California
Our Model Tree links this George Duncan across the 1910, 1920 and 1930 US Censuses in Los Angeles, California (XGBoost, ~Confirmed) — first a head (b.~1879), then head of a 4-person household.
Age 51
b. ~1879
Male
Head
Born: Maryland
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Los Angeles, California |
| Surname | Duncan |
| Given Name | George H |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 21 |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | Maryland |
| Additional Details | |
| Occupation | Salesman |
| Industry | Grocery 4590 |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 14,000 |
| Radio Set | R |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Salesman |
| Township / Ward | Los Angeles City |
| Est. Birth Year | ~1879 |
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 George | Age | Birth yr |
|---|---|---|---|---|
| George Duncan | Other | — | 84 | ~1846 |
| Irene Duncan | Other | — | 50 | ~1880 |
| Lucile Duncan | Daughter | — | 28 | ~1902 |
| George Duncan | Head | — | 51 | ~1879 |
Census Appearances
1910
Los Angeles, …
Head, age 32
Los Angeles, California · implied b. ~1878 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duncan |
| Given Name | George H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | Maryland |
| Years Married | 10 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | United States |
| Occupation | Salesman |
| Industry | Whole Sale House |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | English |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1920
Los Angeles, …
Head, age 41
Los Angeles, California · implied b. ~1879 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Duncan |
| Given Name | George H. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 41 |
| Marital Status | Married |
| Birthplace | Maryland |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | Maryland |
| Occupation | Salesman |
| Industry | Traveling |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Los Angeles, …
Head, age 51
Los Angeles, California · implied b. ~1879 — 4 household members
| Surname | Duncan |
| Given Name | George H |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 51 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 21 |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | Maryland |
| Occupation | Salesman |
| Industry | Grocery 4590 |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 14,000 |
| Radio Set | R |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
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 George Duncan across 3 US Census years (1910, 1920 and 1930) in Los Angeles, California, using XGBoost record linkage.
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This person
Anchor record
George Duncan
Head · 1930 · age 51 · b. ~1879 · 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 — Los Angeles, California
Open full size
1930 US Federal Census — Los Angeles, California
Page Contents
20 people indexed on this census page (ia:1930:californiacensus00reel137:0058)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Elizabeth R Nowlin | 52 | Head | — | California |
| 52 | Thomas L O'Brien | 44 | Head | Broker | Canada |
| 53 | Frances O'Brien | 44 | Wife-H | — | Canada |
| 54 | Beatrice O'Brien | 16 | Daughter | — | Canada |
| 55 | Laurence O'Brien | 14 | Son | — | Canada |
| 56 | Sheila O'Brien | 12 | Daughter | — | Canada |
| 57 | Francis O'Brien | 4 | Son | — | California |
| 58 | Mabel Swaim | 46 | Head | — | Illinois |
| 59 | Julia Belle Swaim | 15 | Daughter | — | Illinois |
| 60 | Walter C Miller | 51 | Head | Office Executive | Illinois |
| 61 | Bessie A Miller | 45 | Wife-H | Office Clerk | Illinois |
| 62 | Ross Miller | 16 | Son | — | Idaho |
| 63 | George H Duncan THIS PERSON | 51 | Head | Salesman | Maryland |
| 64 | Irene Duncan | 50 | Wife-H | — | Kansas |
| 65 | Lucile Duncan | 28 | Daughter | — | California |
| 66 | George W Duncan | 84 | Father | — | New Jersey |
| 67 | Charles H King | 45 | Head | Proprietor | Texas |
| 68 | Emma V King | 39 | Wife-H | — | Germany |
| 69 | Lorenz, Mary A King | 75 | Mother-in-law | — | Germany |
| 70 | Katherine Wheelwright | 23 | Lodger | Secretary | New York |
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)