JQ
James Quinn — 1920 US Census Record
Model Tree available1920 United States Federal Census · San Francisco, California
Our Model Tree links this James Quinn across the 1900, 1910 and 1920 US Censuses in San Francisco, California (XGBoost, ~Confirmed), with identified parents John & Annie — first a son (b.~1893), then head of a 3-person household.
Age 27
b. ~1893
Male
Son
Born: California
Single
1920 Census Record Details
| Census Year | 1920 |
| Location | San Francisco, California |
| Surname | Quinn |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Occupation | Postal Clerk |
| Industry | Post Office |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Irish |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Occupation | Postal Clerk |
| Township / Ward | San Francisco |
| Est. Birth Year | ~1893 |
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 1920 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Catherine Quinn | Daughter | — | 24 | ~1896 |
| James Quinn | Head | — | 60 | ~1860 |
| James Quinn | Son | — | 27 | ~1893 |
Census Appearances
1900
San Francisco, …
Son, age 9
San Francisco, California · implied b. ~1891 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Quinn |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | California |
| Birth Month | Oct |
| Birth Year | 1891 |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | At School |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1910
San Francisco, …
Son, age 18
San Francisco, California · implied b. ~1892 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Quinn |
| Given Name | James T |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Painter |
| Industry | Buildings |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1920
San Francisco, …
Son, age 27
San Francisco, California · implied b. ~1893 — 3 household members
| Surname | Quinn |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 27 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Postal Clerk |
| Industry | Post Office |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Irish |
| 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 Quinn across 3 US Census years (1900, 1910 and 1920) in San Francisco, California, using XGBoost record linkage. Identified parents: father John Quinn (~0.92 confidence) and mother Annie Quinn (~0.92 confidence) and father James Quinn (~0.92 confidence) and father D Quinn (~0.92 confidence) and mother Nellie Quinn (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Quinn
b. ~1859
Source father
● Household
· direct · ~0.92
Mother
Annie Quinn
b. ~1860
Source mother
● Household
· direct · ~0.92
Father
James Quinn
b. ~1860
Source father
● Household
· direct · ~0.92
Father
D Quinn
b. ~1865
Source father
● Household
· direct · ~0.92
Mother
Nellie Quinn
b. ~1866
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Quinn
Son · 1920 · age 27 · b. ~1893 · California
★ You are viewing this record
Sibling
Catherine Quinn
Sibling · 1920 · 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
1920 US Federal Census — San Francisco, California
Open full size
1920 US Federal Census — San Francisco, California
Page Contents
50 people indexed on this census page (ia:1920:14thcensusofpopu136unit:0037)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Theresia Smith | 43 | Wife | None | Italy |
| 52 | Adalita Smith | 17 | Daughter | Comptometer | South America |
| 53 | Virginia Smith | 17 | Daughter | None | Italy |
| 54 | Barbara Smith | 15 | Daughter | None | Italy |
| 55 | Mary Smith | 13 | Daughter | None | Italy |
| 56 | Dominica Smith | 6 | Daughter | None | California |
| 57 | George Walthardt | 43 | Head | General Worker | California |
| 58 | Mary Walthardt | 36 | Sister | None | California |
| 59 | Hattie Walthardt | 44 | Sister | Dressmaker | California |
| 60 | Stephen Turner | 17 | Nephew | Packer | California |
| 61 | Massa Blue | 43 | Head | Proprietor | Finland |
| 62 | Charles Blue | 18 | Son | None | New Jersey |
| 63 | Ellen Blue | 15 | Daughter | None | New Jersey |
| 64 | Frank Schermer | 24 | Head | Clerk Del | Wisconsin |
| 65 | Frances Schermer | 21 | Wife | None | California |
| 66 | Gertrude Schermer | 2 | Daughter | None | California |
| 67 | George Deck | 45 | Head | Teamster | Texas |
| 68 | Mary Deck | 35 | Wife | None | California |
| 69 | George Deck | 14 | Son | None | California |
| 70 | Tessa Deck | 12 | Daughter | None | California |
| 71 | Catherine Deck | 10 | Daughter | None | California |
| 72 | Robert Deck | 8 | Son | None | California |
| 73 | Charles Waters | 32 | Head | Salesman | Scotland |
| 74 | Mary Waters | 36 | Wife | None | Scotland |
| 75 | Richard Waters | 10 | Son | None | Canada |
| 76 | James Quinn | 60 | Head | None | Ireland |
| 77 | Catherine Quinn | 24 | Daughter | Stenographer | California |
| 78 | James Quinn THIS PERSON | 27 | Son | Postal Clerk | California |
| 79 | Melville Grant | 35 | Head | Driller | California |
| 80 | Carolina Grant | 30 | Wife | None | California |
| 81 | George Grant | 2 | Son | None | California |
| 82 | Stanley Grant | 9 | Son | None | California |
| 83 | Morris Grant | 5 | Son | None | California |
| 84 | Amelia Grandolfo | 32 | Head | Laborer | Italy |
| 85 | Rosie Grandolfo | 29 | Wife | None | Italy |
| 86 | Raymond Grandolfo | 8 | Son | None | California |
| 87 | Rudolph Enszlin | 61 | Head | Cabinet Maker | Germany |
| 88 | Johanna Enszlin | 55 | Wife | None | Germany |
| 89 | Herman Eschenhout | 57 | Head | Laborer | Hanover |
| 90 | Richard Eschenhout | 57 | Wife | None | California |
| 91 | William Berkbahn | 50 | Head | Gardener | Germany |
| 92 | Teresa Berkbahn | 41 | Wife | None | Germany |
| 93 | Louisa Miller | 50 | Head | None | Germany |
| 94 | Annetta Miller | 5 | Daughter | None | California |
| 95 | Lawrence Miller | 3 | Son | None | California |
| 96 | Josephine Bernard | 33 | Head | None | California |
| 97 | Victor Bernard | 12 | Son | Clerk | California |
| 98 | Alice Bernard | 6 | Daughter | — | California |
| 99 | Thomas Bernard | 5 | Son | — | California |
| 100 | Marion Bernard | 4 | Daughter | — | California |
Pedigree Summary
James + 1 sibling
Gen 1 · 5 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1920 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)