WQ
William Quinn — 1930 US Census Record
Linked across censuses1930 United States Federal Census · San Francisco, California
Our Model Tree links this William Quinn across the 1910, 1920 and 1930 US Censuses in San Francisco, California (XGBoost, ~Confirmed) — first a head (b.~1875), then head of a 5-person household.
Age 55
b. ~1875
Male
Head
Born: California
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | San Francisco, California |
| Surname | Quinn |
| Given Name | William J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | California |
| Age at First Marriage | 30 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | California |
| Additional Details | |
| Occupation | Traveling Salesman |
| Industry | Shoes |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | 3000 |
| Home Value / Rent | R |
| Veteran | R |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | Traveling Salesman |
| Township / Ward | San Francisco City |
| Est. Birth Year | ~1875 |
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.
5 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Mary Quinn | Daughter | — | 15 | ~1915 |
| William Quinn | Head | — | 55 | ~1875 |
| Mary Weger | Other | — | 66 | ~1864 |
| William Quinn | Son | — | 17 | ~1913 |
| Elizabeth Quinn | Spouse | — | 49 | ~1881 |
Census Appearances
1910
San Francisco, …
Head, age 34
San Francisco, California · implied b. ~1876 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Quinn |
| Given Name | William T |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 34 |
| Marital Status | Married |
| Birthplace | California |
| Years Married | 2 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Teamster |
| Industry | Express Co |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1920
San Francisco, …
Head, age 44
San Francisco, California · implied b. ~1876 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Quinn |
| Given Name | William T. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 44 |
| Marital Status | Married |
| Birthplace | California |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Salesman |
| Industry | Poultry |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Home Owned/Rented | R |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1930
San Francisco, …
Head, age 55
San Francisco, California · implied b. ~1875 — 5 household members
| Surname | Quinn |
| Given Name | William J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 55 |
| Marital Status | Married |
| Birthplace | California |
| Age at First Marriage | 30 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | California |
| Occupation | Traveling Salesman |
| Industry | Shoes |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | 3000 |
| Home Value / Rent | R |
| Veteran | R |
| 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 William Quinn across 3 US Census years (1910, 1920 and 1930) in San Francisco, California, using XGBoost record linkage.
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This person
Anchor record
William Quinn
Head · 1930 · age 55 · b. ~1875 · California
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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
19 people indexed on this census page (ia:1930:californiacensus00reel195:0557)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Joseph H. Byrne | 59 | Head | Carpenter | California |
| 2 | Cecelia M. Graves | 52 | Head | — | California |
| 3 | Florence A. H. Graves | 50 | Sister | — | California |
| 4 | Louis Bitteratto | 27 | Head | Laborer | France |
| 5 | Jennie H. Bitteratto | 33 | Wife | — | France |
| 6 | Leo Bitteratto | 8 | Son | — | California |
| 7 | Jerry Bitteratto | 43 | Brother | Sheet Metal | France |
| 8 | Irving Lillien | 78 | Head | — | Michigan |
| 9 | Dottie Ethel M. H. Lillien | 40 | Daughter | — | Michigan |
| 10 | Irving Lillien | 24 | Son | Electrician | California |
| 11 | Gino F. Agati | 23 | Head | Driver | California |
| 12 | Alice Agati | 17 | Wife | — | California |
| 13 | Nathan Agati | 1 | Son | — | California |
| 14 | Leo Agati | 22 | Brother | Driver | California |
| 15 | William J. Quinn THIS PERSON | 55 | Head | Traveling Salesman | California |
| 16 | Elizabeth J. H. Quinn | 49 | Wife | — | California |
| 17 | William J. Quinn | 17 | Son | — | California |
| 18 | Mary E. Quinn | 15 | Daughter | — | California |
| 19 | Mary J. Weger | 66 | Mother-in-law | — | California |
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)