WM
William Murray — 1930 US Census Record
Linked across censuses1930 United States Federal Census · San Francisco, California
Our Model Tree links this William Murray across the 1920 and 1930 US Censuses in San Francisco, California (XGBoost, ~Confirmed) — first a son (b.~1915), then head of a 10-person household.
Age 15
b. ~1915
Male
Son
Born: California
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | San Francisco, California |
| Surname | Murray |
| Given Name | William J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
| Township / Ward | San Francisco City |
| Est. Birth Year | ~1915 |
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.
10 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Jeanette Murray | Daughter | — | 10 | ~1920 |
| Florence Murray | Daughter | — | 5 | ~1925 |
| Helen Murray | Daughter | — | 8 | ~1922 |
| Lucetta Murray | Daughter | — | 3 | ~1927 |
| Michael Murray | Head | — | 47 | ~1883 |
| James Murray | Son | — | 17 | ~1913 |
| Peter Murray | Son | — | 14 | ~1916 |
| William Murray | Son | — | 15 | ~1915 |
| Edward Murray | Son | — | 12 | ~1918 |
| Jane Murray | Spouse | — | 42 | ~1888 |
Census Appearances
1920
San Francisco, …
Son, age 5
San Francisco, California · implied b. ~1915 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Murray |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Can Read | No |
| Can Write | No |
| Speaks English | Yes |
| Birth State | California |
| Birth Country | United States |
| Birthplace (normalized) | california |
1930
San Francisco, …
Son, age 15
San Francisco, California · implied b. ~1915 — 10 household members
| Surname | Murray |
| Given Name | William J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | California |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| 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 William Murray across 2 US Census years (1920 and 1930) in San Francisco, California, using XGBoost record linkage.
Show:
This person
Anchor record
William Murray
Son · 1930 · age 15 · b. ~1915 · California
★ You are viewing this record
Sibling
Jeanette Murray
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Murray
Sibling · 1930 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Peter Murray
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Murray
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lucetta Murray
Sibling · 1930 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Florence Murray
Sibling · 1930 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Murray
Sibling · 1930 · age 12
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:californiacensus00reel194:1059)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Peter Hansen | 55 | Head | Salesman | California |
| 2 | Sophia Hansen | 55 | Wife | — | Denmark |
| 3 | John Murphy | 43 | Head | Laborer | California |
| 4 | Alice B. Murphy | 42 | Wife | — | California |
| 5 | Alice M. Murphy | 18 | Daughter | Laundress | California |
| 6 | John Murphy | 15 | Son | — | California |
| 7 | Joseph Petrocine | 45 | Head | Laborer | New York |
| 8 | Caroline Petrocine | 42 | Wife | — | New York |
| 9 | George Petrocine | 28 | Son | Butcher Helper | California |
| 10 | Louis Petrocine | 18 | Son | Helper | California |
| 11 | Joseph Petrocine | 16 | Son | — | California |
| 12 | Anthony Sacco | 41 | Head | Laborer | Italy |
| 13 | John Sacco | 14 | Son | Laborer | California |
| 14 | Joseph Sacco | 10 | Son | — | California |
| 15 | Joseph Garcia | 38 | Head | Machinist | Mexico |
| 16 | Custrina Garcia | 38 | Wife | — | Mexico |
| 17 | James Garcia | 4 | Son | — | California |
| 18 | Gilbert Garcia | 1 | Son | — | California |
| 19 | John Saver | 79 | Head | — | Massachusetts |
| 20 | Joseph Mazzoni | 52 | Head | Carpenter | Italy |
| 21 | Amelia Mazzoni | 48 | Wife | Laborer | Italy |
| 22 | Inencia Mazzoni | 7 | Daughter | — | California |
| 23 | James Foley | 51 | Head | — | California |
| 24 | Annie Foley | 50 | Wife | Teamster | Ireland |
| 25 | Pietro Russo | 52 | Head | — | Italy |
| 26 | Maddalina Russo | 48 | Wife | Janitor | Italy |
| 27 | Theresa Russo | 22 | Daughter | — | California |
| 28 | Theresa Russo | 14 | Daughter | Secretary | California |
| 29 | Lawrence Avellino | 35 | Head | Bookkeeper | Italy |
| 30 | Angelina Avellino | 29 | Wife | Salesman | Italy |
| 31 | Flora Avellino | 12 | Daughter | — | California |
| 32 | Florence Avellino | 11 | Daughter | — | California |
| 33 | Morgan Avellino | 40 | Sister | — | Italy |
| 34 | Michael J. Murray | 47 | Head | — | Ireland |
| 35 | Jane J. Murray | 42 | Wife | Teamster | Ireland |
| 36 | James P. Murray | 17 | Son | — | California |
| 37 | William J. Murray THIS PERSON | 15 | Son | — | California |
| 38 | Peter J. Murray | 14 | Son | — | California |
| 39 | Edward J. Murray | 12 | Son | — | California |
| 40 | Jeanette V. Murray | 10 | Daughter | — | California |
| 41 | Helen M. Murray | 8 | Daughter | — | California |
| 42 | Florence E. Murray | 5 | Daughter | — | California |
| 43 | Lucetta E. Murray | 3 | Daughter | — | California |
| 44 | Timothy Murphy | 55 | Head | — | Ireland |
| 45 | Mary Murphy | 50 | Wife | Laborer | Ireland |
| 46 | Joseph Frank | 57 | Head | — | Malta |
| 47 | Mary Frank | 44 | Wife | Collector | Italy |
| 48 | Joseph Frank | 26 | Son | — | California |
| 49 | Daughter Frank | 22 | — | Clerk | California |
| 50 | Son Frank | 18 | — | — | 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)