EC
Eugene Clark — 1920 US Census Record
Model Tree available1920 United States Federal Census · San Francisco, California
Our Model Tree links this Eugene Clark across the 1900, 1910 and 1920 US Censuses in San Francisco, California (XGBoost, ~Confirmed), with identified parents Joseph & Lillie — first a son (b.~1891), then head of a 6-person household.
Age 29
b. ~1891
Male
Son
Born: California
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | San Francisco, California |
| Surname | Clark |
| Given Name | Eugene |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Additional Details | |
| Occupation | Clerk |
| Industry | Post Office |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | Clerk |
| 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.
6 people recorded at the same address in the 1920 census.
| Name | Relation to head | Relative to Eugene | Age | Birth yr |
|---|---|---|---|---|
| Vernon Clark | Son | — | 27 | ~1893 |
| Lillie Clark | Spouse | — | 59 | ~1861 |
| Joseph Clark | Head | — | 56 | ~1864 |
| Harold Clark | Son | — | 20 | ~1900 |
| Edith Clark | Daughter | — | 15 | ~1905 |
| Eugene Clark | Son | — | 29 | ~1891 |
Census Appearances
1900
San Francisco, …
Son, age 10
San Francisco, California · implied b. ~1890 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Eugene |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | California |
| Birth Month | Dec |
| Birth Year | 1890 |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| 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 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clark |
| Given Name | Eugene J |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | Machinist |
| Industry | Rail Road |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1920
San Francisco, …
Son, age 29
San Francisco, California · implied b. ~1891 — 6 household members
| Surname | Clark |
| Given Name | Eugene |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | Clerk |
| Industry | Post Office |
| 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 Eugene Clark across 3 US Census years (1900, 1910 and 1920) in San Francisco, California, using XGBoost record linkage. Identified parents: father Joseph Clark (~0.92 confidence) and mother Lillie Clark (~0.92 confidence) and mother Lillie Clark (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Joseph Clark
b. ~1863
Source father
● Household
· direct · ~0.92
Mother
Lillie Clark
b. ~1865
Source mother
● Household
· direct · ~0.92
Mother
Lillie Clark
b. ~1861
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Eugene Clark
Son · 1920 · age 29 · b. ~1891 · California
★ You are viewing this record
Sibling
Vernon Clark
Sibling · 1920 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harold Clark
Sibling · 1920 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edith Clark
Sibling · 1920 · age 15
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:1920:14thcensusofpopu142unit:0273)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Improscia Tommasa Improvisia | 49 | Wife | — | Italy |
| 2 | Lorenzo Improvisia | 10 | Son | — | California |
| 3 | Eliza Huyck | 71 | Head | — | Ohio |
| 4 | William S. Chapman | 52 | Boarder | Laborer | Illinois |
| 5 | Leah M. Chapman | 48 | Wife | — | California |
| 6 | Elizabeth M. Chapman | 12 | Daughter | — | California |
| 7 | William C. Chapman | 8 | Son | — | California |
| 8 | George A. Leach | 47 | Boarder | Repairman | Ireland |
| 9 | James B. Kingsley | 39 | Head | Teamster | California |
| 10 | Lillian Kingsley | 39 | Wife | — | California |
| 11 | Helen J. Kingsley | 11 | Daughter | — | California |
| 12 | Myrtle Kingsley | 10 | Daughter | — | California |
| 13 | Alice Kingsley | 4 | Daughter | — | California |
| 14 | Daniel E. Ruppert | 71 | Head | Watchman | Germany |
| 15 | Mollie H. Ruppert | 59 | Wife | — | California |
| 16 | Charles Stamboni | 37 | Head | Laborer | Italy |
| 17 | Anna Stamboni | 27 | Wife | — | Italy |
| 18 | Rena Stamboni | 5 | Daughter | — | Italy |
| 19 | Frank Sessiotto | 56 | Head | Carpenter | Italy |
| 20 | Mary Sessiotto | 46 | Wife | — | Italy |
| 21 | Joseph Sessiotto | 18 | Son | Helper | Italy |
| 22 | Joseph Clark | 56 | Head | Painter | England |
| 23 | Lillie Clark | 59 | Wife | — | Indiana |
| 24 | Eugene Clark THIS PERSON | 29 | Son | Clerk | California |
| 25 | Vernon M. Clark | 27 | Son | Operator | California |
| 26 | Harold Clark | 20 | Son | Clerk | California |
| 27 | Edith Clark | 15 | Daughter | — | California |
| 28 | Catherine Farrell | 48 | Head | — | California |
| 29 | W. J. Mclean | 49 | Head | Watch Maker | Iowa |
| 30 | Birdie M. Mclean | 33 | Wife | Manager | Iowa |
| 31 | Thomas G. Furness | 60 | Head | Sheet Metal Worker | New York |
| 32 | Julia Furness | 50 | Wife | — | Wisconsin |
| 33 | Laura Furness | 23 | Daughter | Tailoress | Wisconsin |
| 34 | Irene Furness | 21 | Daughter | — | Illinois |
| 35 | Gerald Furness | 22 | Son | Architect | California |
| 36 | Sara Mckinney | 30 | Head | — | California |
| 37 | Lucille Mckinney | 12 | Daughter | — | California |
| 38 | Theo Richter | 48 | Head | Rigger | Germany |
| 39 | Ernestina Richter | 72 | Mother | — | Germany |
| 40 | Walter J. Syme | 29 | Head | Foreman | Scotland |
| 41 | Elizabeth Syme | 25 | Wife | — | Ireland |
| 42 | W. J. Horgans | 71 | Head | — | Ireland |
| 43 | Frank C. Voyer | 27 | Head | Stationary Engineer | California |
| 44 | Lois Voyer | 25 | Wife | — | Michigan |
| 45 | Detrich Horning | 87 | Grandfather | — | Germany |
| 46 | Addie Cobb | 51 | Head | Merchant | Ohio |
| 47 | Mira Cobb | 40 | Sister | — | Ohio |
| 48 | August Seaman | 60 | Head | Poultry Raising | Russia |
| 49 | Mary J. Seaman | 52 | Wife | — | Canada |
| 50 | Gustaf Spindler | 44 | Head | Baker | Germany |
Related Census Records
Pedigree Summary
Eugene + 3 siblings
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 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)