RA
Robert Anderson — 1920 US Census Record
Model Tree available1920 United States Federal Census · San Francisco, California
Our Model Tree links this Robert Anderson across the 1900, 1910 and 1920 US Censuses in San Francisco, California (XGBoost, ~Confirmed), with identified parents James & James — first a son (b.~1891), then head of a 3-person household.
Age 29
b. ~1891
Male
Son
Born: California
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | San Francisco, California |
| Surname | Anderson |
| Given Name | Robert Edwin |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Virginia |
| Mother's Birthplace | New York |
| Additional Details | |
| Occupation | Engineer |
| Industry | Mining |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | Engineer |
| Township / Ward | San Francisco City |
| Est. Birth Year | ~1891 |
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 Robert | Age | Birth yr |
|---|---|---|---|---|
| James Anderson | Head | — | 66 | ~1854 |
| Robert Anderson | Son | — | 29 | ~1891 |
| Lillie Anderson | Spouse | — | 59 | ~1861 |
Census Appearances
1900
San Francisco, …
Son, age 10
San Francisco, California · implied b. ~1890 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Anderson |
| Given Name | Robert E |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | California |
| Birth Month | Mar |
| Birth Year | 1890 |
| Father's Birthplace | Virginia |
| Mother's Birthplace | New York |
| Occupation | at school |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1910
San Francisco, …
Son, age 20
San Francisco, California · implied b. ~1890 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Anderson |
| Given Name | Robert E |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Virginia |
| Mother's Birthplace | New York |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1920
San Francisco, …
Son, age 29
San Francisco, California · implied b. ~1891 — 3 household members
| Surname | Anderson |
| Given Name | Robert Edwin |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Virginia |
| Mother's Birthplace | New York |
| Occupation | Engineer |
| Industry | Mining |
| 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 Robert Anderson across 3 US Census years (1900, 1910 and 1920) in San Francisco, California, using XGBoost record linkage. Identified parents: father James Anderson (~0.92 confidence) and father James Anderson (~0.92 confidence) and father James Anderson (~0.92 confidence) and mother Lillie Anderson (~0.92 confidence) and mother Nellie Anderson (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Anderson
b. ~1848
Source father
● Household
· direct · ~0.92
Father
James Anderson
b. ~1854
Source father
● Household
· direct · ~0.92
Father
James Anderson
b. ~1855
Source father
● Household
· direct · ~0.92
Mother
Lillie Anderson
b. ~1861
Source mother
● Household
· direct · ~0.92
Mother
Nellie Anderson
b. ~1861
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Anderson
Son · 1920 · age 29 · b. ~1891 · California
★ You are viewing this record
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:1920:14thcensusofpopu141unit:0728)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | George W. Jr. Wilson | 66 | Head | Secretary | Pennsylvania |
| 2 | Ella V. Wilson | 56 | Wife | — | Oregon |
| 3 | Harry C. Morgan | 32 | Head | Engineer | California |
| 4 | Marie B. Morgan | 27 | Wife | — | California |
| 5 | Gertrude Morgan | 7 | Daughter | — | California |
| 6 | Jack Morgan | 5 | Son | — | California |
| 7 | Timothy W. Ward | 53 | Head | Manager | California |
| 8 | Mary Ward | 50 | Wife | — | California |
| 9 | Joseph Burnham | 36 | Head | Buyer | California |
| 10 | Nina Burnham | 36 | Wife | — | California |
| 11 | Mary A. Knownburg | 54 | Mother-in-law | — | California |
| 12 | Frank H. Abbott | 62 | Head | Publisher | Michigan |
| 13 | Margaret G. Abbott | 55 | Wife | — | New York |
| 14 | Margaret Hurley | 61 | Head | — | Ireland |
| 15 | Daniel J. Hurley | 22 | Son | Machinist | California |
| 16 | Evaline Hurley | 21 | Daughter | Accountant | California |
| 17 | Catherine Sommersal | 30 | Daughter | Accountant | California |
| 18 | Annie Hurley | 25 | Daughter | Teacher | California |
| 19 | Gerald J. Fitzgerald | 26 | Roomer | Metal Worker | California |
| 20 | Edward Mountain | 65 | Roomer | — | Wisconsin |
| 21 | James Thomas Anderson | 66 | Head | Lieut. Police | Virginia |
| 22 | Lillie A. Anderson | 59 | Wife | — | New York |
| 23 | Robert Edwin Anderson THIS PERSON | 29 | Son | Engineer | California |
| 24 | Ernest Thiele | 73 | Head | Goldsmith | Germany |
| 25 | Sophie Thiele | 61 | Wife | — | Germany |
| 26 | Edmund J. Thiele | 24 | Son | Assistant | California |
| 27 | Charlotte J. Thiele | 17 | Daughter | — | California |
| 28 | Louis J. Ruine | 41 | Head | Secretary | California |
| 29 | May J. Ruine | 36 | Wife | — | California |
| 30 | Laurence L. Ruine | 13 | Son | — | California |
| 31 | Russell R. Ruine | 9 | Son | — | California |
| 32 | Bernice M. Ruine | 7 | Daughter | — | California |
| 33 | Mark M. Williver | 43 | Head | Officer | California |
| 34 | Maud C. Williver | 25 | Wife | Nurse | California |
| 35 | Rose T. Oldenberg | 45 | Head | — | California |
| 36 | William A. Kline | 43 | Brother | Machinist | California |
| 37 | August F. Kline | 35 | Brother | Machinist | California |
| 38 | Dana Williver | 12 | Brother | — | California |
| 39 | August Curtis | 10 | Nephew | — | California |
| 40 | H. Louie | 28 | Sister | Sales Lady | California |
| 41 | Herbert Hesselcke | 39 | Head | Superintendent | California |
| 42 | Margaret Hesselcke | 32 | Wife | — | California |
| 43 | Frances Hesselcke | 7 | Daughter | — | California |
| 44 | Ruth Hesselcke | 4 | Daughter | — | California |
| 45 | Henry James Trowbridge | 53 | Head | Salesman | England |
| 46 | Mary Ellen Trowbridge | 53 | Wife | — | California |
| 47 | Elma Irene Trowbridge | 24 | Daughter | Teacher | California |
| 48 | Frank A. Madison | 53 | Head | Foreman | California |
| 49 | Franklin A. Madison | 23 | Son | Clerk | California |
| 50 | Anita G. Madison | 25 | Daughter | Clerk | California |
Pedigree Summary
Robert
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 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)