GT
Grace Thompson — 1930 US Census Record
Model Tree available1930 United States Federal Census · Santa Clara, California
Our Model Tree links this Grace Thompson across the 1910, 1920 and 1930 US Censuses in Santa Clara, California (XGBoost, ~Confirmed), with identified parents James & Jarvis — first a daughter (b.~1904), then head of a 3-person household.
Age 26
b. ~1904
Female
Daughter
Born: Massachusetts
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Santa Clara, California |
| Surname | Thompson |
| Given Name | Grace |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Canada |
| Mother's Birthplace | Massachusetts |
| Additional Details | |
| Occupation | Stenographer |
| Industry | Office |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Stenographer |
| Township / Ward | Sunnyvale Township Montvale Precinct |
| Est. Birth Year | ~1904 |
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 1930 census.
| Name | Relation to head | Relative to Grace | Age | Birth yr |
|---|---|---|---|---|
| Grace Thompson | Daughter | — | 26 | ~1904 |
| Jarvis Thompson | Head | — | 69 | ~1861 |
| Sadie Thompson | Other | — | 60 | ~1870 |
Census Appearances
1910
Santa Clara, …
Daughter, age 5
Santa Clara, California · implied b. ~1905 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Thompson |
| Given Name | Grace |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Eng English |
| Mother's Birthplace | Massachusetts |
| Occupation | none |
| Speaks English | English |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1920
Santa Clara, …
Daughter, age 15
Santa Clara, California · implied b. ~1905
●
Primary link
· ~Confirmed · 1 source
XGBoost
| Surname | Thompson |
| Given Name | Grace |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Canada |
| Mother's Birthplace | Massachusetts |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Santa Clara, …
Daughter, age 26
Santa Clara, California · implied b. ~1904 — 3 household members
| Surname | Thompson |
| Given Name | Grace |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Canada |
| Mother's Birthplace | Massachusetts |
| Occupation | Stenographer |
| Industry | Office |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
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 Grace Thompson across 3 US Census years (1910, 1920 and 1930) in Santa Clara, California, using XGBoost record linkage. Identified parents: father James Thompson (~0.92 confidence) and father Jarvis Thompson (~0.92 confidence) and mother B Thompson (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Thompson
b. ~1861
Source father
● Household
· direct · ~0.92
Father
Jarvis Thompson
b. ~1861
Source father
● Household
· direct · ~0.92
Mother
B Thompson
b. ~1870
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Grace Thompson
Daughter · 1930 · age 26 · b. ~1904 · California
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1930 US Federal Census — Santa Clara, California
Open full size
1930 US Federal Census — Santa Clara, California
Page Contents
50 people indexed on this census page (ia:1930:californiacensus00reel220:0243)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Irene | 4 | daughter | — | California |
| 2 | Tony Giangreco | 42 | Head | Orchardist | Italy |
| 3 | Josie Giangreco | 37 | Wife-H | — | Italy |
| 4 | Nick Giangreco | 18 | Son | Truck Driver | California |
| 5 | Mary Giangreco | 14 | Daughter | — | California |
| 6 | James E. Walker | 52 | Head | Foreman | Illinois |
| 7 | Grace C. Walker | 52 | Wife-H | — | Missouri |
| 8 | Virginia Walker | 17 | Daughter | — | Montana |
| 9 | James Patton | 32 | Head | Laborer | Missouri |
| 10 | Audya Patton | 20 | Wife-H | Cannery Worker | Missouri |
| 11 | Frank Vierra | 45 | Head | Proprietor | California |
| 12 | Edna Vierra | 36 | Wife-H | — | California |
| 13 | Dorothy Vierra | 17 | Daughter | — | California |
| 14 | Chester Vierra | 24 | Bro-in-law | Clerk | California |
| 15 | Martin Markussen | 56 | Head | Orchardist | Denmark |
| 16 | Ella Markussen | 45 | Wife-H | — | California |
| 17 | Gladys Markussen | 7 | Daughter | — | California |
| 18 | Wallace Adams | 12 | Step-son | — | California |
| 19 | Frank Sore | 46 | Head | Salesman | California |
| 20 | Lempi Sore | 44 | Wife-H | — | Finland |
| 21 | P. Marion Sore | 12 | Daughter | — | California |
| 22 | Anton V. Hansen | 57 | Head | Orchardist | Denmark |
| 23 | Minnie Hansen | 51 | Wife-H | — | California |
| 24 | Juichi Sakayanagi | 53 | Head | Gardener | Japan |
| 25 | Isa Sakayanagi | 35 | Wife-H | — | Japan |
| 26 | Henry Sakayanagi | 15 | Son | — | California |
| 27 | George Sakayanagi | 12 | Son | — | California |
| 28 | John Sakayanagi | 10 | Son | — | California |
| 29 | Jack Sakayanagi | 7 | Son | — | California |
| 30 | Claude A. Porter | 51 | Head | Orchardist | Connecticut |
| 31 | Margaret M. Porter | 51 | Wife-H | — | Canada |
| 32 | C. Adelbert Porter | 23 | Son | Mechanic | California |
| 33 | James D. Porter | 17 | Son | — | California |
| 34 | Donald P. Porter | 16 | Son | — | California |
| 35 | Christina M. Porter | 14 | Daughter | — | California |
| 36 | Elmer E. Calkins | 67 | Head | Janitor | Connecticut |
| 37 | Louise Calkins | 19 | Daughter | — | Illinois |
| 38 | Jarvis Thompson | 69 | Head | Poultryman | Canada |
| 39 | Sadie F. Thompson | 60 | Wife-H | — | Massachusetts |
| 40 | Grace Thompson THIS PERSON | 26 | Daughter | Stenographer | Massachusetts |
| 41 | Charles P. Forge | 64 | Head | Orchardist | England |
| 42 | Florence L. Forge | 67 | Wife-H | — | Missouri |
| 43 | Florence L. Forge | 22 | Daughter | — | California |
| 44 | William B. Trengove | 57 | Head | Laborer | England |
| 45 | Ellen E. Trengove | 57 | Wife-H | — | England |
| 46 | Stanley Krupiak | 48 | Head | Carpenter | Poland |
| 47 | Olive H. Krupiak | 47 | Wife-H | — | England |
| 48 | John S. Krupiak | 12 | Son | — | Nevada |
| 49 | John Speziale | 44 | Head | Laborer | Sicily |
| 50 | Pauline Speziale | 37 | Wife-H | — | Sicily |
Pedigree Summary
Grace
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 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)