KS
Katherine Sullivan — 1930 US Census Record
Model Tree available1930 United States Federal Census · San Francisco, California
Our Model Tree links this Katherine Sullivan across the 1910, 1920 and 1930 US Censuses in San Francisco, California (XGBoost, ~Confirmed), with identified parents Holloway — first a daughter (b.~1907), then head of a 7-person household.
Age 23
b. ~1907
Female
Daughter
Born: California
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | San Francisco, California |
| Surname | Sullivan |
| Given Name | Katherine P. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| 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 | San Francisco City |
| Est. Birth Year | ~1907 |
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.
7 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Katherine | Age | Birth yr |
|---|---|---|---|---|
| Esther Crawford | Other | — | 38 | ~1892 |
| Robert Sullivan | Son | — | 19 | ~1911 |
| Beatrice Tallant | Other | — | 34 | ~1896 |
| William Sullivan | Son | — | 21 | ~1909 |
| Harry Sullivan | Son | — | 25 | ~1905 |
| Holloway Sullivan | Head | — | 44 | ~1886 |
| Katherine Sullivan | Daughter | — | 23 | ~1907 |
Census Appearances
1910
San Francisco, …
Other, age 3
San Francisco, California · implied b. ~1907 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Katherine |
| Relationship to Head | Granddaughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| 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 13
San Francisco, California · implied b. ~1907 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Sullivan |
| Given Name | Katherine |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| 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 Francisco, …
Daughter, age 23
San Francisco, California · implied b. ~1907 — 7 household members
| Surname | Sullivan |
| Given Name | Katherine P. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 23 |
| 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 Katherine Sullivan across 3 US Census years (1910, 1920 and 1930) in San Francisco, California, using XGBoost record linkage. Identified parents: father Holloway Sullivan (~0.92 confidence). The pedigree spans 1 generation with 1 identified ancestor.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Holloway Sullivan
b. ~1886
Source father
● Household
· direct · ~0.92
This person
Anchor record
Katherine Sullivan
Daughter · 1930 · age 23 · b. ~1907 · California
★ You are viewing this record
Sibling
William Sullivan
Sibling · 1930 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Sullivan
Sibling · 1930 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harry Sullivan
Sibling · 1930 · age 25
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 Francisco, California
Open full size
1930 US Federal Census — San Francisco, California
Page Contents
25 people indexed on this census page (ia:1930:californiacensus00reel206:0969)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Charles G. Salmon | 39 | Head | Physician | Missouri |
| 2 | Lois P. Salmon | 41 | Wife | — | Canada English |
| 3 | Talbot R. Salmon | 15 | Son | — | Ohio |
| 4 | John T. Salmon | 12 | Son | — | California |
| 5 | Jean Salmon | 11 | Daughter | — | California |
| 6 | Roberta Elliot | 21 | Servant | Cook | Russia |
| 7 | Eugene Mcsarchiel | 47 | Servant | Nurse | Ohio |
| 8 | Harry H. Caguff | 52 | Head | Banker | California |
| 9 | Mary E. Caguff | 53 | Sister | — | California |
| 10 | Manford M. Mcmullen | 25 | Servant | Teacher | New York |
| 11 | Sanford Allen | 34 | Head | Dentist | California |
| 12 | Helen H. Allen | 26 | Wife | — | California |
| 13 | Blanche Hassell | 57 | Mother-in-law | — | California |
| 14 | Holloway Sullivan | 44 | Head | — | California |
| 15 | Harry Sullivan | 25 | Son | Grocer | California |
| 16 | Katherine P. Sullivan THIS PERSON | 23 | Daughter | — | California |
| 17 | William S. Sullivan | 21 | Son | Clerk | California |
| 18 | Robert S. Sullivan | 19 | Son | — | California |
| 19 | Esther Crawford | 38 | Servant | Maid | Georgia |
| 20 | Beatrice Tallant | 34 | Servant | Cook | Mississippi |
| 21 | Ruth Taylor Hutchinson | 25 | Head | — | Colorado |
| 22 | Ruth Hutchinson | 52 | Mother | — | Nebraska |
| 23 | Clara E. Tiernan | 53 | Mother | — | Massachusetts |
| 24 | Freda Powers | 20 | Maid | — | California |
| 25 | Charlotte Miller | 16 | Lodger | — | New York |
Pedigree Summary
Katherine + 3 siblings
Gen 1 · 1 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)