KM
Katherine Murphy — 1940 US Census Record
Model Tree available1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this Katherine Murphy across the 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Elizabeth & James — first a daughter (b.~1918), then head of a 5-person household.
Age 22
b. ~1918
Female
Daughter
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Murphy |
| Given Name | Katherine |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Occupation | Operator |
| Industry | Bell Telephone Co. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 551 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same Place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Operator |
| Township / Ward | Pittsburgh |
| Est. Birth Year | ~1918 |
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 Katherine | Age | Birth yr |
|---|---|---|---|---|
| Sidney Murphy | Head | — | 44 | ~1896 |
| Dorothy Murphy | Daughter | — | 18 | ~1922 |
| Katherine Murphy | Daughter | — | 22 | ~1918 |
| Robert Murphy | Son | — | 16 | ~1924 |
| Catherine Murphy | Spouse | — | 42 | ~1898 |
Census Appearances
1920
Allegheny, Pennsylvania
Daughter, age 2
Allegheny, Pennsylvania · implied b. ~1918 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Murphy |
| Given Name | Kathryn |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 2 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read | No |
| Can Write | No |
| Speaks English | No |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Daughter, age 12
Allegheny, Pennsylvania · implied b. ~1918 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Murphy |
| Given Name | Katherine |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| 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
Daughter, age 22
Allegheny-County, Pennsylvania · implied b. ~1918 — 5 household members
| Surname | Murphy |
| Given Name | Katherine |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Occupation | Operator |
| Industry | Bell Telephone Co. |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 551 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same Place |
| 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 Katherine Murphy across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: mother Elizabeth Murphy (~0.84 confidence) and father James Murphy (~0.84 confidence) and father Edwin Murphy (~0.92 confidence) and father Robert Murphy (~0.92 confidence) and father Sidney Murphy (~0.92 confidence) and mother Catherine Murphy (~0.92 confidence) and mother Sadie Murphy (~0.92 confidence). The pedigree spans 2 generations with 7 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.9
Mother
Elizabeth Murphy
b. ~1860
Source father>mother
● Household
· direct · ~0.84
Father
James Murphy
b. ~1862
Source father>father
● Household
· direct · ~0.84
Father
Edwin Murphy
b. ~1891
Source father
● Household
· direct · ~0.92
Father
Robert Murphy
b. ~1893
Source father
● Household
· direct · ~0.92
Father
Sidney Murphy
b. ~1896
Source father
● Household
· direct · ~0.92
Mother
Catherine Murphy
b. ~1898
Source mother
● Household
· direct · ~0.92
Mother
Sadie Murphy
b. ~1899
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Katherine Murphy
Daughter · 1940 · age 22 · b. ~1918 · Pennsylvania
★ You are viewing this record
Sibling
Dorothy Murphy
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Murphy
Sibling · 1940 · age 16
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
39 people indexed on this census page (nara:1940:m-t0627-03669-00344)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Donald Damin | 6 | Son | — | Pennsylvania |
| 42 | Daniel Damin | 1 | Son | — | Pennsylvania |
| 43 | James Bolton | 17 | Step son | — | Pennsylvania |
| 44 | Paul G. Michiel | 50 | Head | — | Syria |
| 45 | Marion R. Michiel | 18 | Daughter | Salesman | Nebraska |
| 46 | Samuel Michiel | 17 | Son | — | Pennsylvania |
| 47 | Sarah Michiel | 16 | Daughter | New Worker | Pennsylvania |
| 48 | Nellie Michiel | 15 | Daughter | — | Pennsylvania |
| 49 | Lee Wentling | 34 | Head | — | Pennsylvania |
| 50 | Anna M. Wentling | 33 | Wife | Mechanic | Pennsylvania |
| 51 | Maybelle D. Mckenzie | 62 | Mother | Clerk | Pennsylvania |
| 52 | Geo. L. Arensberg | 67 | Head | — | Pennsylvania |
| 53 | Harry H. Arensberg | 30 | Head | Engineer | Pennsylvania |
| 54 | Bertha H. Arensberg | 29 | Wife | Laborer | Virginia |
| 55 | Harry W. Arensberg | 9 | Son | — | Pennsylvania |
| 56 | Raymond Arensberg | 7 | Son | — | Pennsylvania |
| 57 | Richard Arensberg | 5 | Son | — | Pennsylvania |
| 58 | William Arensberg | 3 | Son | — | Pennsylvania |
| 59 | Sidney F. Murphy | 44 | Head | Salesman | Pennsylvania |
| 60 | Catherine M. Murphy | 42 | Wife | — | Pennsylvania |
| 61 | Katherine Murphy THIS PERSON | 22 | Daughter | Operator | Pennsylvania |
| 62 | Dorothy Murphy | 18 | Daughter | New Worker | Pennsylvania |
| 63 | Robert Murphy | 16 | Son | — | Pennsylvania |
| 64 | Geo. R. Hart | 56 | Head | Salesman | Ohio |
| 65 | Elma D. Hart | 46 | Wife | — | Iowa |
| 66 | David G. Lloyd | 60 | Head | Contractor | Pennsylvania |
| 67 | Bella B. Lloyd | 59 | Wife | — | Pennsylvania |
| 68 | Mary Evans | 84 | Mother in law | — | Pennsylvania |
| 69 | Gustave Seabright | 58 | Head | Machinist | Pennsylvania |
| 70 | Loretta Seabright | 54 | Wife | — | Pennsylvania |
| 71 | Blanche Detzer | 19 | Niece | — | Pennsylvania |
| 72 | Edw. H. Gardiner | 36 | Head | Mech. Engineer | Colorado |
| 73 | Mary Gardiner | 34 | Wife | — | Pennsylvania |
| 74 | Nancy Gardiner | 7 | Daughter | — | Pennsylvania |
| 75 | Robert Ganoe | 70 | Boarder | Retired Flagman | Pennsylvania |
| 76 | John L. Christ | 40 | Head | Butcher | Russia |
| 77 | Celia Christ | 35 | Wife | — | Russia |
| 78 | Barbara Christ | 10 | Daughter | — | Pennsylvania |
| 79 | Audrey Christ | 8 | Daughter | — | Pennsylvania |
Pedigree Summary
Katherine + 2 siblings
Gen 1 · 5 parents
~0.92
Gen 2 · 2 grandparents
~0.84
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)