WM
William Murphy — 1940 US Census Record
Model Tree available1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this William Murphy across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents William & James — first a son (b.~1914), then head of a 5-person household.
Age 26
b. ~1914
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Murphy |
| Given Name | William J. (Jr) |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Wilkinsburg |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | C 3 |
| 1935 Residence | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Pittsburgh |
| Est. Birth Year | ~1914 |
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 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Cecile Murphy | Daughter | — | 22 | ~1918 |
| William Murphy | Head | — | 64 | ~1876 |
| William Murphy | Son | — | 26 | ~1914 |
| George Murphy | Son | — | 31 | ~1909 |
| Margaret Murphy | Spouse | — | 58 | ~1882 |
Census Appearances
1920
Allegheny, Pennsylvania
Son, age 6
Allegheny, Pennsylvania · implied b. ~1914 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Murphy |
| Given Name | William J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Son, age 16
Allegheny, Pennsylvania · implied b. ~1914 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Murphy |
| Given Name | William J |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Allegheny-County, Pennsylvania
Son, age 26
Allegheny-County, Pennsylvania · implied b. ~1914 — 5 household members
| Surname | Murphy |
| Given Name | William J. (Jr) |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Wilkinsburg |
| 1935 Residence (County) | Allegheny |
| Income (1939) | 0 |
| Highest Grade | C 3 |
| 1935 Residence | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 William Murphy (~0.92 confidence) and father James Murphy (~0.92 confidence) and father James Murphy (~0.92 confidence) and mother Mary Murphy (~0.92 confidence) and mother Margaret Murphy (~0.92 confidence). The pedigree spans 1 generation with 5 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
William Murphy
b. ~1876
Source father
● Household
· direct · ~0.92
Father
James Murphy
b. ~1873
Source father
● Household
· direct · ~0.92
Father
James Murphy
b. ~1869
Source father
● Household
· direct · ~0.92
Mother
Mary Murphy
b. ~1879
Source mother
● Household
· direct · ~0.92
Mother
Margaret Murphy
b. ~1882
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Murphy
Son · 1940 · age 26 · b. ~1914 · Pennsylvania
★ You are viewing this record
Sibling
Cecile Murphy
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Murphy
Sibling · 1940 · age 31
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
1940 US Federal Census — Allegheny-County, Pennsylvania
Open full size
1940 US Federal Census — Allegheny-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03660-00687)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Catherine Jackson | 30 | Wife | — | Pennsylvania |
| 42 | Carmella Jackson | 13 | Daughter | — | Pennsylvania |
| 43 | Ronald Jackson | 11 | Son | — | Pennsylvania |
| 44 | Eileen Jackson | 9 | Daughter | — | Pennsylvania |
| 45 | John S. Jackson | 55 | Head | Crane Operator | Pennsylvania |
| 46 | Mae Jackson | 51 | Wife | — | Pennsylvania |
| 47 | Edgar Hartshorn | 58 | Head | Electrician | England |
| 48 | Ada Hartshorn | 56 | Wife | — | England |
| 49 | Julia Hartshorn | 29 | Daughter | — | Pennsylvania |
| 50 | Albert Hartshorn | 34 | Son | Automobile Mechanic | Pennsylvania |
| 51 | Robert Patterson | 23 | Son-in-law | Civil Engineer | Pennsylvania |
| 52 | Mary Patterson | 21 | Daughter | — | Pennsylvania |
| 53 | William Patterson | 1 | Grand Son | — | Pennsylvania |
| 54 | Barbara Patterson | 0 | Granddaughter | — | Pennsylvania |
| 55 | William C. Murphy | 64 | Head | Signal Man | Pennsylvania |
| 56 | Margaret M. Murphy | 58 | Wife | — | Eire |
| 57 | George J. Murphy | 31 | Son | Attendant | Pennsylvania |
| 58 | Cecile Murphy | 22 | Daughter | Bill Adjuster | Pennsylvania |
| 59 | William J. (Jr) Murphy THIS PERSON | 26 | Son | — | Pennsylvania |
| 60 | William Weaver | 34 | Head | Messenger | Pennsylvania |
| 61 | Mabel Weaver | 31 | Wife | — | Pennsylvania |
| 62 | Evelyn Weaver | 13 | Daughter | — | Pennsylvania |
| 63 | Jean Weaver | 8 | Daughter | — | Pennsylvania |
| 64 | John R. Eckerman | 45 | Head | Laborer | Pennsylvania |
| 65 | Mabel Eckerman | 48 | Wife | — | Pennsylvania |
| 66 | John Schurer | 44 | Head | Warehouse Man | Washington D.C. |
| 67 | Jean Schurer | 41 | Wife | — | Pennsylvania |
| 68 | Claire Schurer | 10 | Daughter | — | Pennsylvania |
| 69 | Jacquelyn Schurer | 9 | Daughter | — | Pennsylvania |
| 70 | Frank A. De Lucca | 54 | Head | Carpenter | Italy |
| 71 | Amelia De Lucca | 45 | Wife | — | Italy |
| 72 | Stella De Lucca | 23 | Daughter | Saleslady | Pennsylvania |
| 73 | John De Lucca | 19 | Son | Draftsman | Pennsylvania |
| 74 | Viola De Lucca | 15 | Daughter | — | Pennsylvania |
| 75 | Vincent De Lucca | 11 | Son | — | Pennsylvania |
| 76 | Frank De Lucca | 25 | Son | Punch Press Operator | Pennsylvania |
| 77 | Pauline De Lucca | 27 | Daughter-in-law | — | Indiana |
| 78 | Barbara Ann De Lucca | 5 | Granddaughter | — | Pennsylvania |
| 79 | Catherine Viggiano | 72 | Mother-in-law | — | Italy |
| 80 | William L. Snowball | 52 | Head | Auto Mechanic | Ohio |
Related Census Records
Pedigree Summary
William + 2 siblings
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 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)