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Alma Nelson — 1920 US Census Record
Model Tree available1920 United States Federal Census · San Francisco, California
Our Model Tree links this Alma Nelson across the 1900, 1910 and 1920 US Censuses in San Francisco, California (XGBoost, ~Confirmed), with identified parents Louis & Jacqueline — first a daughter (b.~1899), then head of a 3-person household.
Age 21
b. ~1899
Female
Daughter
Born: California
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | San Francisco, California |
| Surname | Nelson |
| Given Name | Alma J. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | California |
| Additional Details | |
| Occupation | Student |
| Industry | Teacher |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | Student |
| Township / Ward | San Francisco City |
| Est. Birth Year | ~1899 |
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.
3 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to Alma | Age | Birth yr |
|---|---|---|---|---|
| Alma Nelson | Daughter | — | 21 | ~1899 |
| Lawrence Nelson | Son | — | 23 | ~1897 |
| Louis Nelson | Head | — | 55 | ~1865 |
Census Appearances
1900
San Francisco, …
Daughter, age 2
San Francisco, California · implied b. ~1898 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Alma |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | California |
| Birth Month | Oct |
| Birth Year | 1898 |
| 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 |
1910
San Francisco, …
Daughter, age 11
San Francisco, California · implied b. ~1899 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Nelson |
| Given Name | Alma A |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 11 |
| 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 Francisco, …
Daughter, age 21
San Francisco, California · implied b. ~1899 — 3 household members
| Surname | Nelson |
| Given Name | Alma J. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | California |
| Occupation | Student |
| Industry | Teacher |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | 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 Alma Nelson across 3 US Census years (1900, 1910 and 1920) in San Francisco, California, using XGBoost record linkage. Identified parents: father Louis Nelson (~0.92 confidence) and mother Jacqueline Nelson (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Louis Nelson
b. ~1864
Source father
● Household
· direct · ~0.92
Mother
Jacqueline Nelson
b. ~1872
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Alma Nelson
Daughter · 1920 · age 21 · b. ~1899 · California
★ You are viewing this record
Sibling
Lawrence Nelson
Sibling · 1920 · age 23
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
1920 US Federal Census — San Francisco, California
Open full size
1920 US Federal Census — San Francisco, California
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu133unit:0631)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Lester Hunn | 24 | Roomer | Burner | California |
| 2 | Lawrence Machado | 41 | Roomer | Bookkeeper | Oregon |
| 3 | Edward Mcdowell | 22 | Roomer | Clerical | Massachusetts |
| 4 | Arthur Mcdowell | 18 | Roomer | Bookkeeper | New York |
| 5 | Preston L. Meeker | 23 | Roomer | Salesman | California |
| 6 | Grover F. Bowman | 26 | Roomer | Dentist | California |
| 7 | John A. Mcpherson | 19 | Roomer | Student | California |
| 8 | Eric Norton | 52 | Head | Millman | At Sea |
| 9 | Anna Norton | 39 | Wife | — | Russia |
| 10 | Anita Norton | 10 | Daughter | — | California |
| 11 | Louis W. Nelson | 55 | Head | Superintendent | California |
| 12 | Lawrence H. Nelson | 23 | Son | Clerk | California |
| 13 | Alma J. Nelson THIS PERSON | 21 | Daughter | Student | California |
| 14 | Albert Glock | 61 | Head | Stableman | Germany |
| 15 | Christine Glock | 58 | Wife | — | Germany |
| 16 | Marie Glock | 24 | Daughter | Stenographer | California |
| 17 | Cecelia Vollier | 75 | Head | — | New York |
| 18 | Frederick Vollier | 34 | Son | Laborer | California |
| 19 | Rolla Parablow | 39 | Head | Brakeman | Alabama |
| 20 | Laurel Parablow | 35 | Wife | — | California |
| 21 | Wendell Parablow | 15 | Son | — | California |
| 22 | Jack E. Ellis | 33 | Head | Accountant | England |
| 23 | Maryan Ellis | 22 | Wife | — | California |
| 24 | Harold E. Ellis | 1 | Son | — | California |
| 25 | Walden J. Boyle | 20 | Brother-in-law | Picture Framer | California |
| 26 | Lewis Sokolow | 29 | Head | Automobile Mechanic | Russia |
| 27 | Mary Sokolow | 24 | Wife | — | Russia |
| 28 | Thomas F. Joell | 26 | Head | Drayman | California |
| 29 | Ruth Joell | 22 | Wife | — | California |
| 30 | Edward R. Joell | 1 | Son | — | California |
| 31 | Joseph Schlesinger | 38 | Roomer | Hatter | California |
| 32 | Hugh Spence | 80 | Head | — | Scotland |
| 33 | James Pemberton | 62 | Partner | Collector | Kentucky |
| 34 | Marion Cohn | 32 | Head | Chauffeur | California |
| 35 | Mabel Cohn | 32 | Wife | — | California |
| 36 | Marion Cohn | 2 | Daughter | — | California |
| 37 | Marie Bergfeld | 42 | Head | — | Germany |
| 38 | Robert Bergfeld | 17 | Son | Bookkeeper | California |
| 39 | Juanita Bergfeld | 14 | Daughter | — | California |
| 40 | Edward C. Snow | 66 | Head | Miller | Massachusetts |
| 41 | Lottie Snow | 65 | Wife | — | Michigan |
| 42 | Frank J. Flowers | 36 | Head | Cabinet Maker | Alabama |
| 43 | Maybelle L. Flowers | 32 | Wife | — | Georgia |
| 44 | Leslie Mullaly | 29 | Head | Waitress | California |
| 45 | Stella Mullaly | 24 | Sister | Dancing Teacher | California |
| 46 | Alva Mullaly | 23 | Sister | Presswoman | California |
| 47 | August O. Schlumdt | 53 | Head | Waiter | Germany |
| 48 | Peter C. Schlumdt | 57 | Brother | Waiter | Germany |
| 49 | Anna M. Schlumdt | 80 | Mother | — | Germany |
| 50 | Lewis F. Kraken | 36 | Head | Veterinary Surgeon | New York |
Related Census Records
Pedigree Summary
Alma + 1 sibling
Gen 1 · 2 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 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)