JM
James Murray — 1940 US Census Record
Model Tree available1940 United States Federal Census · Allegheny-County, Pennsylvania
Our Model Tree links this James Murray across the 1910, 1920, 1930 and 1940 US Censuses in Allegheny-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Valentine & Catherine — first a son (b.~1910), then head of a 6-person household.
Age 30
b. ~1910
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Allegheny-County, Pennsylvania |
| Surname | Murray |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Additional Details | |
| Occupation | Sales Engineer |
| Industry | Electrical Engineering |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 4000 |
| Highest Grade | C 4 |
| 1935 Residence | Same House |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Sales Engineer |
| Township / Ward | Pittsburgh |
| Est. Birth Year | ~1910 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Kathleen Murray | Daughter | — | 27 | ~1913 |
| Catherine Murray | Head | — | 66 | ~1874 |
| Lea Washington | Other | — | 36 | ~1904 |
| Ambrose Murray | Son | — | 28 | ~1912 |
| John Murray | Son | — | 32 | ~1908 |
| James Murray | Son | — | 30 | ~1910 |
Census Appearances
1910
Allegheny, Pennsylvania
Son, age 1
Allegheny, Pennsylvania · implied b. ~1909 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Murray |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1920
Allegheny, Pennsylvania
Son, age 10
Allegheny, Pennsylvania · implied b. ~1910 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Murray |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Allegheny, Pennsylvania
Son, age 20
Allegheny, Pennsylvania · implied b. ~1910 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Murray |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Age at First Marriage | 27 |
| 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 30
Allegheny-County, Pennsylvania · implied b. ~1910 — 6 household members
| Surname | Murray |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Pittsburgh |
| 1935 Residence (County) | Allegheny |
| Occupation | Sales Engineer |
| Industry | Electrical Engineering |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 4000 |
| Highest Grade | C 4 |
| 1935 Residence | Same House |
| 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 James Murray across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Valentine Murray (~0.92 confidence) and mother Catherine Murray (~0.92 confidence) and father James Murray (~0.92 confidence) and father Dave Murray (~0.92 confidence) and mother Lilla Murray (~0.92 confidence) and mother Elizabeth Murray (~0.92 confidence) and mother Irene Murray (~0.92 confidence). The pedigree spans 1 generation with 7 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Valentine Murray
b. ~1865
Source father
● Household
· direct · ~0.92
Mother
Catherine Murray
b. ~1874
Source mother
● Household
· direct · ~0.92
Father
James Murray
b. ~1882
Source father
● Household
· direct · ~0.92
Father
Dave Murray
b. ~1883
Source father
● Household
· direct · ~0.92
Mother
Lilla Murray
b. ~1883
Source mother
● Household
· direct · ~0.92
Mother
Elizabeth Murray
b. ~1886
Source mother
● Household
· direct · ~0.92
Mother
Irene Murray
b. ~1887
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Murray
Son · 1940 · age 30 · b. ~1910 · Pennsylvania
★ You are viewing this record
Sibling
Kathleen Murray
Sibling · 1940 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Murray
Sibling · 1940 · age 32
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ambrose Murray
Sibling · 1940 · age 28
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-t0627-03655-00750)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Isabella Buckley | 32 | Wife | Saleslady | Michigan |
| 2 | Isabelle Buckley | 5 | Daughter | — | Pennsylvania |
| 3 | Nancy Buckley | 4 | Daughter | — | Pennsylvania |
| 4 | Hugh Buckley | 1 | Son | — | Pennsylvania |
| 5 | Catherine Santamicca | 17 | Servant | Servant | Pennsylvania |
| 6 | Samuel Church | 82 | Head | Educator | Missouri |
| 7 | Bertha O. Church | 66 | Wife | — | Pennsylvania |
| 8 | Reginald Church | 40 | Son | Broker | Pennsylvania |
| 9 | Helen H. Church | 35 | Daughter-in-law | — | Pennsylvania |
| 10 | Catherine Schualy | Schuaby | 25 | Servant | Servant | Pennsylvania |
| 11 | Sarah Donegan | Donegan | 30 | Servant | Servant | Irish Free State |
| 12 | Harry Kealey | 60 | Head | Merchant | Pennsylvania |
| 13 | Elizabeth Kealey | 60 | Wife | — | Pennsylvania |
| 14 | Catherine Kealey | 33 | Daughter | Saleslady | Pennsylvania |
| 15 | Harry Kealey | 18 | Son | — | Pennsylvania |
| 16 | Mary Kelly | 69 | Sister-in-law | — | Pennsylvania |
| 17 | Nettie O. Purdy | 60 | Head | — | Pennsylvania |
| 18 | Edward Mcdaniel | 31 | Houseman | Houseman | South Carolina |
| 19 | Sarah Mcdaniel | 24 | Servant | Servant | Georgia |
| 20 | A. A. Bialas | 51 | Head | Salesman | Pennsylvania |
| 21 | S. T. Bialas | 52 | Wife | — | Maryland |
| 22 | Stella Bialas | 24 | Daughter | — | Pennsylvania |
| 23 | Sarah Joyce | 28 | Servant | Servant | Irish Free State |
| 24 | Joseph Barr | 67 | Head | Civil Engineer | Pennsylvania |
| 25 | Effie O. Barr | 65 | Wife | — | Pennsylvania |
| 26 | Daniel Barr | 30 | Son | Civil Engineer | Pennsylvania |
| 27 | Effie Barr | 33 | Daughter | Social Worker | Pennsylvania |
| 28 | Beatrice Barr | 24 | Daughter | Stenographer | Minnesota |
| 29 | Thomas Barr | 20 | Son | New Worker | Pennsylvania |
| 30 | Catherine O. Murray | 66 | Head | — | Pennsylvania |
| 31 | John Murray | 32 | Son | Accountant | Pennsylvania |
| 32 | James Murray THIS PERSON | 30 | Son | Sales Engineer | Pennsylvania |
| 33 | Ambrose (Ab) Murray | 28 | Son | Salesman | Pennsylvania |
| 34 | Kathleen Murray | 27 | Daughter | Secretary | Pennsylvania |
| 35 | Lea Washington | 36 | Servant | Servant | Maryland |
| 36 | Raymond Keany | 50 | Head | Salesman | Pennsylvania |
| 37 | Estella Keany | 48 | Wife | — | Pennsylvania |
| 38 | Elizabeth Keany | 21 | Daughter | Saleslady | Pennsylvania |
| 39 | Donald Keany | 20 | Son | New Worker | Pennsylvania |
| 40 | William Keany | 18 | Son | — | Pennsylvania |
Pedigree Summary
James + 3 siblings
Gen 1 · 7 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)