JC
James Collins — 1930 US Census Record
Model Tree available1930 United States Federal Census · San Francisco, California
Our Model Tree links this James Collins across the 1910, 1920 and 1930 US Censuses in San Francisco, California (XGBoost, ~Confirmed), with identified parents Joseph & Mary — first a son (b.~1906), then head of a 3-person household.
Age 24
b. ~1906
Male
Son
Born: California
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | San Francisco, California |
| Surname | Collins |
| Given Name | James E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | California |
| Additional Details | |
| Occupation | Clerk |
| Industry | Export & Import |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | Clerk |
| Township / Ward | San Francisco City |
| Est. Birth Year | ~1906 |
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 James | Age | Birth yr |
|---|---|---|---|---|
| Alice Collins | Daughter | — | 19 | ~1911 |
| Mary Collins | Head | — | 57 | ~1873 |
| James Collins | Son | — | 24 | ~1906 |
Census Appearances
1910
San Francisco, …
Son, age 4
San Francisco, California · implied b. ~1906 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Collins |
| Given Name | James R. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| 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, …
Son, age 14
San Francisco, California · implied b. ~1906 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Collins |
| Given Name | James J |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| 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 24
San Francisco, California · implied b. ~1906 — 3 household members
| Surname | Collins |
| Given Name | James E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | California |
| Mother's Birthplace | California |
| Occupation | Clerk |
| Industry | Export & Import |
| 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 James Collins across 3 US Census years (1910, 1920 and 1930) in San Francisco, California, using XGBoost record linkage. Identified parents: father Joseph Collins (~0.92 confidence) and mother Mary Collins (~0.92 confidence) and mother Mary Collins (~0.92 confidence) and mother Mary Collins (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Joseph Collins
b. ~1868
Source father
● Household
· direct · ~0.92
Mother
Mary Collins
b. ~1873
Source mother
● Household
· direct · ~0.92
Mother
Mary Collins
b. ~1873
Source mother
● Household
· direct · ~0.92
Mother
Mary Collins
b. ~1872
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Collins
Son · 1930 · age 24 · b. ~1906 · California
★ You are viewing this record
Sibling
Alice Collins
Sibling · 1930 · age 19
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
49 people indexed on this census page (ia:1930:californiacensus00reel203:0482)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Joseph Guerrini | 50 | Head | Proprietor | Italy |
| 52 | Ernest Guerrini | 26 | Son | — | Indiana |
| 53 | Roman Guerrini | 23 | Son | — | California |
| 54 | Connie Guerrini | 20 | Daughter | Proprietor | California |
| 55 | Alfred Guerrini | 17 | Son | Clerk | California |
| 56 | S. J. Corini | 44 | Head | — | United States |
| 57 | Rose Corini | 24 | Wife | Designer | United States |
| 58 | Charles Guerrieri | 51 | Head | — | Germany |
| 59 | Josephine Guerrieri | 46 | Wife | — | Germany |
| 60 | Spencer Tuck | 68 | Head | — | Massachusetts |
| 61 | Margaret Tuck | 52 | Wife | Teacher | California |
| 62 | Arthur L. Ross | 44 | Head | Manager | California |
| 63 | Alice G. Ross | 43 | Wife | — | California |
| 64 | Arthur J. Ross | 14 | Son | — | California |
| 65 | Robert Ross | 9 | Son | — | California |
| 66 | Barbara Ross | 7 | Daughter | — | California |
| 67 | Mary J. Green | 13 | Servant | Servant | California |
| 68 | Anthony Dubery | 62 | Head | Manager | California |
| 69 | L. Clementine Dubery | 61 | Wife | Saleslady | California |
| 70 | Edward Mcadams | 50 | Head | Superintendent | Maryland |
| 71 | Lucy Mcadams | 50 | Wife | — | New York |
| 72 | James Clun | 52 | Head | Undertaker | Nevada |
| 73 | Alice C. Clun | 52 | Wife | — | Pennsylvania |
| 74 | Alice C. Clun | 26 | Daughter | Stenographer | California |
| 75 | James J. Jr. Clun | 18 | Son | — | California |
| 76 | George Craig | 41 | Head | Solicitor | California |
| 77 | Edith M. Craig | 41 | Wife | — | California |
| 78 | A. Edith Craig | 10 | Daughter | — | California |
| 79 | Alice Craig | 8 | Daughter | — | California |
| 80 | Robert M. Craig | 4 | Son | — | California |
| 81 | Louise Lilja | 63 | Cook | — | California |
| 82 | Mary E. Collins | 57 | Head | — | California |
| 83 | James E. Collins THIS PERSON | 24 | Son | Clerk | California |
| 84 | Alice E. Collins | 19 | Daughter | Stenographer | California |
| 85 | Marie A. Legrand | 66 | Head | — | Canada French |
| 86 | Marion Allison | 29 | Daughter | Bookkeeper | Washington |
| 87 | May Cunningham | 35 | Lodger | Secretary | California |
| 88 | Alice Cunningham | 12 | Lodger | — | California |
| 89 | Rose Lee | 33 | Lodger | — | California |
| 90 | Alice Thompson | 12 | Lodger | — | Canada English |
| 91 | James De Lara | 36 | Head | Technician | Italy |
| 92 | Russell De Lara | 35 | Wife | — | California |
| 93 | Jane De Lara | 10 | Son | — | California |
| 94 | Lucille De Lara | 7 | Daughter | — | California |
| 95 | Michael Mcruddy | 45 | Lodger | Salesman | Irish Free State |
| 96 | Lana Murray | 20 | Lodger | Trained Nurse | Canada English |
| 97 | Irene Boynton | 21 | Lodger | Trained Nurse | Canada English |
| 98 | George Hess | 44 | Lodger | — | California |
| 99 | Linda M. Wilson | 42 | Head | Teacher | Pennsylvania |
Pedigree Summary
James + 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)