WN
William Nelson — 1930 US Census Record
Model Tree available1930 United States Federal Census · San Luis Obispo, California
Our Model Tree links this William Nelson across the 1910, 1920 and 1930 US Censuses in San Luis Obispo, California (XGBoost, ~Confirmed), with identified parents John & Albert — first a son (b.~1910), then head of a 4-person household.
Age 20
b. ~1910
Male
Son
Born: California
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | San Luis Obispo, California |
| Surname | Nelson |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | California |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Township / Ward | City Of San Luis Obispo |
| Est. Birth Year | ~1910 |
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 William | Age | Birth yr |
|---|---|---|---|---|
| Albert Nelson | Head | — | 54 | ~1876 |
| Elizabeth Nelson | Other | — | 51 | ~1879 |
| William Nelson | Son | — | 20 | ~1910 |
| Stanley Nelson | Son | — | 13 | ~1917 |
Census Appearances
1910
San Luis …
Son, age 2
San Luis Obispo, California · implied b. ~1908 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | California |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1920
San Luis …
Son, age 11
San Luis Obispo, California · implied b. ~1909 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | William R. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 11 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | California |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1930
San Luis …
Son, age 20
San Luis Obispo, California · implied b. ~1910 — 4 household members
| Surname | Nelson |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | California |
| 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 William Nelson across 3 US Census years (1910, 1920 and 1930) in San Luis Obispo, California, using XGBoost record linkage. Identified parents: father John Nelson (~0.92 confidence) and father Albert Nelson (~0.92 confidence) and father Albert Nelson (~0.92 confidence) and mother Nellie Nelson (~0.92 confidence) and mother Elizabeth Nelson (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Nelson
b. ~1868
Source father
● Household
· direct · ~0.92
Father
Albert Nelson
b. ~1875
Source father
● Household
· direct · ~0.92
Father
Albert Nelson
b. ~1876
Source father
● Household
· direct · ~0.92
Mother
Nellie Nelson
b. ~1872
Source mother
● Household
· direct · ~0.92
Mother
Elizabeth Nelson
b. ~1879
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Nelson
Son · 1930 · age 20 · b. ~1910 · California
★ You are viewing this record
Sibling
Stanley Nelson
Sibling · 1930 · age 13
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 — San Luis Obispo, California
Open full size
1930 US Federal Census — San Luis Obispo, California
Page Contents
41 people indexed on this census page (ia:1930:californiacensus00reel213:0329)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Frank Hendrich | 35 | Head | Carpenter | Germany |
| 2 | Katharina Hendrich | 34 | Wife-H | — | Germany |
| 3 | Willie Hendrich | 11 | Son | — | Germany |
| 4 | Thomas Shipman | 85 | Head | — | England |
| 5 | Hattie Shipman | 79 | Sister-H | — | Ohio |
| 6 | Audrey Springfield | 49 | Head | Merchant | Iowa |
| 7 | John E. Shipman | 30 | Head | Machinist | Montana |
| 8 | Caroline Shipman | 31 | Wife-H | — | Nebraska |
| 9 | Olympia De Lattardi | 52 | Head | — | Switzerland |
| 10 | Alfa De Lattardi | 30 | Daughter | Graduate Nurse | California |
| 11 | Victor Rose | 29 | Head | Truck Driver | North Dakota |
| 12 | Thelma Rose | 21 | Wife-H | — | California |
| 13 | Patricia Rose | 4 | Daughter | — | California |
| 14 | Theodore Rose | 1 | Son | — | California |
| 15 | Refugio Herrera | 35 | Head-H | — | California |
| 16 | Olive K. Bollinger | 19 | Lodger | Waitress | California |
| 17 | Paul Paparotto | 36 | Lodger | Salesman | Italy |
| 18 | Edward Cothal | 23 | Lodger | Salesman | California |
| 19 | Alan G. Gordon | 27 | Lodger | Salesman | Russia |
| 20 | Deborah Miller | 79 | Head | — | Maine |
| 21 | Gwendolyn Marshall | 34 | Daughter | Secy-Tr. | Maine |
| 22 | Grace B. Brown | 54 | Lodger | Reporter | California |
| 23 | John O'Connor | 68 | Head | Postmaster | Massachusetts |
| 24 | Margaret A. O'Connor | 63 | Wife-H | — | California |
| 25 | Mary O'Connor | 33 | Daughter | Sch. Lady | California |
| 26 | Edw. H. Hardell | 53 | Head | Merchant | Iowa |
| 27 | Frances Hardell | 47 | Wife-H | — | Scotland |
| 28 | George Stone | 17 | Lodger | — | California |
| 29 | George W. Stone | 49 | Lodger | Chef | New York |
| 30 | Philip Dusenwater | 26 | Lodger | Butcher | Washington |
| 31 | Arthur J. Kehn | 47 | Lodger | Roofer | England |
| 32 | Wakefield B. Burket | 34 | Lodger | Teacher | Iowa |
| 33 | Walter Wolff | 21 | Lodger | Salesman | Michigan |
| 34 | Ralph Stahley | 23 | Lodger | Salesman | California |
| 35 | Alexander Merre | 47 | Lodger | Proprietor | Russia |
| 36 | Edward C. Rodgers | 50 | Head | Publisher | Indiana |
| 37 | Grace G. Rodgers | 49 | Wife-H | — | New York |
| 38 | Albert Nelson | 54 | Head | Lawyer | California |
| 39 | Elizabeth Nelson | 51 | Wife-H | — | California |
| 40 | William Nelson THIS PERSON | 20 | Son | — | California |
| 41 | Stanley Nelson | 13 | Son | — | California |
Pedigree Summary
William + 1 sibling
Gen 1 · 5 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)