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Harry Thomas — 1930 US Census Record
Model Tree available1930 United States Federal Census · San Francisco, California
Our Model Tree links this Harry Thomas across the 1910, 1920 and 1930 US Censuses in San Francisco, California (XGBoost, ~Confirmed), with identified parents Hugh & Hugh — first a son (b.~1903), then head of a 4-person household.
Age 27
b. ~1903
Male
Son
Born: California
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | San Francisco, California |
| Surname | Thomas |
| Given Name | Harry |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | California |
| Additional Details | |
| Occupation | Inspector |
| Industry | Power |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | Inspector |
| Township / Ward | San Francisco City |
| Est. Birth Year | ~1903 |
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 Harry | Age | Birth yr |
|---|---|---|---|---|
| Hugh Thomas | Head | — | 62 | ~1868 |
| Edward Thomas | Son | — | 21 | ~1909 |
| Harry Thomas | Son | — | 27 | ~1903 |
| Pauline Thomas | Spouse | — | 57 | ~1873 |
Census Appearances
1910
San Francisco, …
Son, age 7
San Francisco, California · implied b. ~1903 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Harry E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Illinois |
| Mother's Birthplace | California |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1920
San Francisco, …
Son, age 17
San Francisco, California · implied b. ~1903 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thomas |
| Given Name | Harry |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Illinois |
| Mother's Birthplace | California |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1930
San Francisco, …
Son, age 27
San Francisco, California · implied b. ~1903 — 4 household members
| Surname | Thomas |
| Given Name | Harry |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | California |
| Occupation | Inspector |
| Industry | Power |
| Class of Worker | W |
| 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 Harry Thomas across 3 US Census years (1910, 1920 and 1930) in San Francisco, California, using XGBoost record linkage. Identified parents: father Hugh Thomas (~0.92 confidence) and father Hugh Thomas (~0.92 confidence) and father Joseph Thomas (~0.92 confidence) and mother Pauline Thomas (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Hugh Thomas
b. ~1868
Source father
● Household
· direct · ~0.92
Father
Hugh Thomas
b. ~1868
Source father
● Household
· direct · ~0.92
Father
Joseph Thomas
b. ~1868
Source father
● Household
· direct · ~0.92
Mother
Pauline Thomas
b. ~1873
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Harry Thomas
Son · 1930 · age 27 · b. ~1903 · California
★ You are viewing this record
Sibling
Edward Thomas
Sibling · 1930 · age 21
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
50 people indexed on this census page (ia:1930:californiacensus00reel207:0326)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mabel Lansing | 59 | Head | — | California |
| 2 | Andrew Schoenmaker | 52 | Head | Janitor | Switzerland |
| 3 | Darrell P. Mekenciani | 48 | Head | Agent | Illinois |
| 4 | Jane A. Mekenciani | 42 | Wife | — | Pennsylvania |
| 5 | Irving C. Morgan | 47 | Head | Accountant | California |
| 6 | Elizabeth Morgan | 65 | Mother | — | Michigan |
| 7 | Margaret Morgan | 40 | Sister | — | California |
| 8 | Earnest Whitney | 55 | Head | Detective | Massachusetts |
| 9 | Antoinette Whitney | 58 | Wife | — | Illinois |
| 10 | Geraldine Whitney | 21 | Daughter | Librarian | Massachusetts |
| 11 | Coleman J. Mcleary | 53 | Head | Auditor | Missouri |
| 12 | Laura Mcleary | 64 | Sister | — | Missouri |
| 13 | Bess Mcleary | 47 | Sister | Secretary | Missouri |
| 14 | Michael Commerford | 28 | Head | Insurance | New York |
| 15 | Irene Commerford | 23 | Wife | Clerk | Iowa |
| 16 | Ada Moffatt | 43 | Head | Advertiser | Massachusetts |
| 17 | Marlyn H. Egill | 33 | Head | Salesman | Texas |
| 18 | Evelyn Egill | 23 | Wife | — | California |
| 19 | Gertrude L. Brown | 39 | Head | Teacher | California |
| 20 | Sydney M. Giddeth | 32 | Head | Surgeon | Rumania |
| 21 | Dorothy Giddeth | 27 | Wife | — | California |
| 22 | Leslie Miller | 27 | Head | Salesman | Kansas |
| 23 | Ruth Miller | 34 | Wife | — | New York |
| 24 | William Miller | 13 | Son | — | New York |
| 25 | Percy Healy | 52 | Head | Salesman | Hawaii |
| 26 | Mabel Healy | 50 | Wife | — | California |
| 27 | Mary Healy | 21 | Daughter | — | California |
| 28 | Hugh Thomas | 62 | Head | Foreman | California |
| 29 | Pauline Thomas | 57 | Wife | — | California |
| 30 | Harry Thomas THIS PERSON | 27 | Son | Inspector | California |
| 31 | Edward Thomas | 21 | Son | Book Keeper | California |
| 32 | Olive Schuetz | 51 | Head | Department Manager | Kansas |
| 33 | George Martin | 52 | Head | Foreman | Missouri |
| 34 | Laura Martin | 57 | Sister | — | Missouri |
| 35 | Lanson Jordan | 57 | Head | Miner | Iowa |
| 36 | Irene Jordan | 27 | Daughter | Book Keeper | California |
| 37 | Estelle Holmster | 27 | Friend | Teacher | California |
| 38 | Murdock Mckenzie | 58 | Head | Carpenter | Scotland |
| 39 | Hortense Mckenzie | 52 | Wife | — | England |
| 40 | Alfred Sylvester | 26 | Head | Installer | Washington |
| 41 | Dorothy Sylvester | 23 | Wife | — | California |
| 42 | Rufus Parkinson | 26 | Head | Chief Clerk | Ohio |
| 43 | Evelyn Parkinson | 26 | Wife | — | California |
| 44 | La Wayne Parkinson | 3 | Son | — | Ohio |
| 45 | John Dawson | 32 | Head | Mechanic | Wisconsin |
| 46 | Marie Dawson | 29 | Wife | — | Wyoming |
| 47 | Patricia Dawson | 2 | Daughter | — | Wisconsin |
| 48 | Ann Lynch | 25 | Head | Operator | California |
| 49 | Stella Arata | 32 | Partner | Saleslady | California |
| 50 | Frances Meagher | 19 | Partner | Waitress | California |
Pedigree Summary
Harry + 1 sibling
Gen 1 · 4 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)