JH
John Holland — 1930 US Census Record
Model Tree available1930 United States Federal Census · San Francisco, California
Our Model Tree links this John Holland across the 1910, 1920 and 1930 US Censuses in San Francisco, California (XGBoost, ~Confirmed), with identified parents Jeremiah & Nellie — first a son (b.~1905), then head of a 7-person household.
Age 25
b. ~1905
Male
Son
Born: California
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | San Francisco, California |
| Surname | Holland |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Occupation | Motorman |
| Industry | Municipality |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | Motorman |
| Township / Ward | San Francisco City |
| Est. Birth Year | ~1905 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Catherine Holland | Daughter | — | 24 | ~1906 |
| Margaret Holland | Daughter | — | 26 | ~1904 |
| Jeremiah Holland | Head | — | 56 | ~1874 |
| Florence Holland | Son | — | 22 | ~1908 |
| Timothy Holland | Son | — | 27 | ~1903 |
| John Holland | Son | — | 25 | ~1905 |
| Nellie Holland | Spouse | — | 56 | ~1874 |
Census Appearances
1910
San Francisco, …
Son, age 5
San Francisco, California · implied b. ~1905 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Holland |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | none |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1920
San Francisco, …
Son, age 15
San Francisco, California · implied b. ~1905 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Holland |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | none |
| Industry | 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 25
San Francisco, California · implied b. ~1905 — 7 household members
| Surname | Holland |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Motorman |
| Industry | Municipality |
| 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 John Holland across 3 US Census years (1910, 1920 and 1930) in San Francisco, California, using XGBoost record linkage. Identified parents: father Jeremiah Holland (~0.92 confidence) and mother Nellie Holland (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Jeremiah Holland
b. ~1873
Source father
● Household
· direct · ~0.92
Mother
Nellie Holland
b. ~1875
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Holland
Son · 1930 · age 25 · b. ~1905 · California
★ You are viewing this record
Sibling
Florence Holland
Sibling · 1930 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Holland
Sibling · 1930 · age 26
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Timothy Holland
Sibling · 1930 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Holland
Sibling · 1930 · age 24
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:californiacensus00reel197:0019)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Umberto Spadaro | 53 | Head | Cleaner | Italy |
| 2 | Assunta Spadaro | 40 | Wife | — | Italy |
| 3 | Dino Spadaro | 16 | Son | Laborer | California |
| 4 | Leo Spadaro | 10 | Son | — | California |
| 5 | Noel Renard | 31 | Head | Teacher | Canada |
| 6 | Eva Renard | 31 | Wife | — | Massachusetts |
| 7 | Erminio Poggio | 50 | Head | Clerk | New York |
| 8 | Louisa Poggio | 54 | Wife | — | New York |
| 9 | Albert Poggio | 18 | Son | — | California |
| 10 | Craig Raymond Poggio | 3 | Gr Son | — | California |
| 11 | Ivan Eterovich | 42 | Head | Waiter | Jugo Slavia |
| 12 | Annie Eterovich | 30 | Wife | — | Jugo Slavia |
| 13 | Winnie Eterovich | 8 | Daughter | — | California |
| 14 | John Eterovich | 7 | Son | — | California |
| 15 | Catherine Eterovich | 5 | Daughter | — | California |
| 16 | Frances Eterovich | 4 | Daughter | — | California |
| 17 | Margaret Ferren | 50 | Head | — | California |
| 18 | George Catesby | 39 | Roomer | Cook | Turkey |
| 19 | Mary Burkhardt | 67 | Head | Dressmaker | California |
| 20 | William Kruckfuss | 32 | Head | Salesman | Germany |
| 21 | Elvira Kruckfuss | 33 | Wife | — | California |
| 22 | Bertha Rossi | 65 | Mother in law | — | California |
| 23 | Louis Tomasello | 36 | Head | Barber | Italy |
| 24 | Mary Tomasello | 30 | Wife | — | Italy |
| 25 | John Tomasello | 7 | Son | — | California |
| 26 | Rose Tomasello | 6 | Daughter | — | California |
| 27 | Gasparino Gillo | 51 | Head | Barber | Italy |
| 28 | Jessie Gillo | 20 | Daughter | — | California |
| 29 | Peter Gillo | 11 | Son | — | California |
| 30 | Frank Weber | 34 | Head | Draughtsman | California |
| 31 | Katie Weber | 64 | Mother | — | Ireland |
| 32 | Jeremiah Holland | 56 | Head | Laborer | Ireland |
| 33 | Nellie Holland | 56 | Wife | — | Ireland |
| 34 | Timothy Holland | 27 | Son | Fireman | California |
| 35 | Margaret Holland | 26 | Daughter | Office | California |
| 36 | John Holland THIS PERSON | 25 | Son | Motorman | California |
| 37 | Catherine Holland | 24 | Daughter | Office | California |
| 38 | Florence Holland | 22 | Son | Helper | California |
| 39 | Ettae Pissottis | 53 | Head | Painter | Italy |
| 40 | Rita Pissottis | 52 | Wife | — | Italy |
| 41 | Rosita Pissottis | 23 | Daughter | Bookkeeper | Italy |
| 42 | Silvio Capuclio | 44 | Head | — | Italy |
| 43 | Adolfo Cantagalli | 43 | Lodger | Cabinet Maker | Italy |
| 44 | Dominic Muggiora | 38 | Head | Barber | Italy |
| 45 | Pixie Muggiora | 27 | Wife | — | Italy |
| 46 | Mel Muggiora | 7 | Son | — | California |
| 47 | Einar Antonsen | 33 | Head | Stevedore | Norway |
| 48 | Jenny Antonsen | 31 | Wife | — | Norway |
| 49 | John Antonsen | 4 | Son | — | California |
| 50 | Morris Amund | 45 | Roomer | Engineer | Norway |
Pedigree Summary
John + 4 siblings
Gen 1 · 2 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)