WM
William Murphy — 1940 US Census Record
Model Tree available1940 United States Federal Census · Alameda-County, California
Our Model Tree links this William Murphy across the 1920, 1930 and 1940 US Censuses in Alameda-County, California (XGBoost, ~Confirmed), with identified parents Charles — first a head (b.~1901), then head of a 4-person household.
Age 39
b. ~1901
Male
Head
Born: Washington
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Alameda-County, California |
| Surname | Murphy |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Washington |
| 1935 Residence (City) | Oakland |
| 1935 Residence (County) | Alameda |
| Additional Details | |
| Occupation | Electrician |
| Industry | Bldg Construction |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 2640 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
| Occupation | Electrician |
| Township / Ward | Oakland |
| Est. Birth Year | ~1901 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Joyce Murphy | Daughter | — | 15 | ~1925 |
| William Murphy | Head | — | 39 | ~1901 |
| William Murphy | Son | — | 13 | ~1927 |
| Dorothy Murphy | Spouse | — | 35 | ~1905 |
Census Appearances
1920
Alameda, California
Son, age 18
Alameda, California · implied b. ~1902 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Murphy |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Washington |
| Father's Birthplace | California |
| Mother's Birthplace | California |
| Occupation | Electrician |
| Industry | Electric Co |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1930
Alameda, California
Head, age 29
Alameda, California · implied b. ~1901 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Murphy |
| Given Name | William L. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Washington |
| Age at First Marriage | 21 |
| Father's Birthplace | California |
| Mother's Birthplace | California |
| Occupation | Electrician |
| Industry | House |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 22.50 |
| Veteran | No |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
1940
Alameda-County, California
Head, age 39
Alameda-County, California · implied b. ~1901 — 4 household members
| Surname | Murphy |
| Given Name | William |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Washington |
| 1935 Residence (City) | Oakland |
| 1935 Residence (County) | Alameda |
| Occupation | Electrician |
| Industry | Bldg Construction |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 2640 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Washington |
| Birth Country | United States |
| Birthplace (normalized) | washington |
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 Murphy across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Charles Murphy (~0.92 confidence). The pedigree spans 1 generation with 1 identified ancestor.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Charles Murphy
b. ~1878
Source father
● Household
· direct · ~0.92
This person
Anchor record
William Murphy
Head · 1940 · age 39 · b. ~1901 · California
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Alameda-County, California
Open full size
1940 US Federal Census — Alameda-County, California
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-00433-00646)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Edgar L. Thompson | 42 | Head | Salesman | Ohio |
| 42 | Elizabeth Thompson | 34 | Wife | — | California |
| 43 | Elizabeth Thompson | 5 | Daughter | — | California |
| 44 | Fernand Talberti | 47 | Head | Truck Driver | Italy |
| 45 | Anna Talberti | 34 | Wife | — | California |
| 46 | Dino Talberti | 10 | Son | — | California |
| 47 | Earl Creager | 40 | Head | Electrician | Kentucky |
| 48 | Clarice Creager | 37 | Wife | — | North Dakota |
| 49 | Earl Jr. Creager | 16 | Son | — | California |
| 50 | Carol Creager | 2 | Daughter | — | California |
| 51 | Eugene W. Kemper | 26 | Head | Salesman | California |
| 52 | Charlotte B. Kemper | 26 | Wife | Nurse | California |
| 53 | Walter K. Old | 45 | Head | Engineer | Ohio |
| 54 | Mary E. Old | 68 | Mother | — | Ohio |
| 55 | Chauncey Forward | 70 | Head | — | California |
| 56 | Rhoda Forward | 64 | Wife | — | Minnesota |
| 57 | Calvin Blanchard | 35 | Son in law | — | Ohio |
| 58 | William James | 42 | Head | Printer | Kansas |
| 59 | Leona James | 48 | Wife | Press Operator | Missouri |
| 60 | Eugene R. James | 17 | Son | — | California |
| 61 | James Harte | 36 | Head | Tower Man | Tennessee |
| 62 | Rebecca Harte | 36 | Wife | Sales Lady | Tennessee |
| 63 | James Jr. Harte | 7 | Son | — | California |
| 64 | May Nistle | 66 | Head | Painter | Michigan |
| 65 | William Murphy THIS PERSON | 39 | Head | Electrician | Washington |
| 66 | Dorothy Murphy | 35 | Wife | Electrician | California |
| 67 | Joyce Murphy | 15 | Daughter | — | California |
| 68 | William Jr. Murphy | 13 | Son | — | California |
| 69 | Richard Plowman | 31 | Head | Insurance Agent | California |
| 70 | Hortense Plowman | 31 | Wife | — | California |
| 71 | Richard T. Plowman | 2 | Son | — | California |
| 72 | Harry King | 40 | Head | Road Grader | California |
| 73 | Edith King | 34 | Wife | — | Minnesota |
| 74 | George Perry | 43 | Head | — | California |
| 75 | Wayne Perry | 15 | Son | — | California |
| 76 | Isabelle Perry | 82 | Mother | — | Portugal |
| 77 | Claude Warrend | 54 | Head | Station Agent | Indiana |
| 78 | Anna L. Warrend | 47 | Wife | — | California |
| 79 | Ronald Nopold | 15 | Nephew | — | California |
Pedigree Summary
William
Gen 1 · 1 parents
~0.92
Max depth 4 (1900–1950 window)
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1940 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)