JM
James Murphy — 1930 US Census Record
Model Tree available1930 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this James Murphy across the 1910, 1920 and 1930 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed), with identified parents Patrick & Annie — first a son (b.~1909), then head of a 4-person household.
Age 21
b. ~1909
Male
Son
Born: Massachusetts
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Middlesex, Massachusetts |
| Surname | Murphy |
| Given Name | James H |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Additional Details | |
| Occupation | Helper |
| Industry | Book Bindery |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Helper |
| Township / Ward | Cambridge City |
| Est. Birth Year | ~1909 |
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 1930 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Margaret Murphy | Head | — | 56 | ~1874 |
| John Murphy | Son | — | 15 | ~1915 |
| Joseph Murphy | Son | — | 18 | ~1912 |
| James Murphy | Son | — | 21 | ~1909 |
Census Appearances
1910
Middlesex, Massachusetts
Son, age 1
Middlesex, Massachusetts · implied b. ~1909 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Murphy |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1920
Middlesex, Massachusetts
Son, age 12
Middlesex, Massachusetts · implied b. ~1908 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Murphy |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Son, age 21
Middlesex, Massachusetts · implied b. ~1909 — 4 household members
| Surname | Murphy |
| Given Name | James H |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Helper |
| Industry | Book Bindery |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
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 Murphy across 3 US Census years (1910, 1920 and 1930) in Middlesex, Massachusetts, using XGBoost record linkage. Identified parents: father Patrick Murphy (~0.92 confidence) and mother Annie Murphy (~0.92 confidence) and mother Elizabeth Murphy (~0.92 confidence) and mother Margaret Murphy (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Patrick Murphy
b. ~1888
Source father
● Household
· direct · ~0.92
Mother
Annie Murphy
b. ~1889
Source mother
● Household
· direct · ~0.92
Mother
Elizabeth Murphy
b. ~1874
Source mother
● Household
· direct · ~0.92
Mother
Margaret Murphy
b. ~1874
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Murphy
Son · 1930 · age 21 · b. ~1909 · Massachusetts
★ You are viewing this record
Sibling
Joseph Murphy
Sibling · 1930 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Murphy
Sibling · 1930 · age 15
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 — Middlesex, Massachusetts
Open full size
1930 US Federal Census — Middlesex, Massachusetts
Page Contents
50 people indexed on this census page (ia:1930:massachusettscensus00reel916:0388)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Timothy Ballantine | 24 | Son | — | Newfoundland |
| 2 | James Ballantine | 21 | Son | Stenographer | Massachusetts |
| 3 | Helen Ballantine | 16 | Daughter | — | Massachusetts |
| 4 | George Ballantine | 13 | Son | — | Massachusetts |
| 5 | Catherine Ballantine | 11 | Daughter | — | Massachusetts |
| 6 | Catherine Leary | 45 | Head | — | Newfoundland |
| 7 | John J Leary | 50 | Brother | Laborer | Massachusetts |
| 8 | Daniel A Leary | 40 | Brother | Painter | Massachusetts |
| 9 | James F Lennon | 34 | Head | Accountant | Massachusetts |
| 10 | Lorna L Lennon | 32 | Wife | — | Massachusetts |
| 11 | James F Jr Lennon | 5 | Son | — | Massachusetts |
| 12 | Lorna Lennon | 4 | Daughter | — | Massachusetts |
| 13 | William Lennon | 2 | Son | — | Massachusetts |
| 14 | Robert Lennon | 1 | Son | — | Massachusetts |
| 15 | Frank Mcgrath | 60 | Head | — | Massachusetts |
| 16 | Mary A Mcgrath | 58 | Wife | — | New York |
| 17 | Isabel J Mccarthy | 35 | Daughter | — | Massachusetts |
| 18 | Frank Mccarthy | 37 | Son-in-law | Conductor | Massachusetts |
| 19 | John Flaherty | 57 | Head | — | Massachusetts |
| 20 | Mary E Flaherty | 57 | Wife | — | Irish Free State |
| 21 | John Flaherty | 35 | Son | Salesman | Massachusetts |
| 22 | Mary E Broderick | 57 | Head | — | Massachusetts |
| 23 | Alice L Broderick | 26 | Daughter | Stenographer | Massachusetts |
| 24 | John J Broderick | 25 | Son | Architect | Massachusetts |
| 25 | William Broderick | 23 | Son | Clerk | Massachusetts |
| 26 | Anna Lynch | 48 | Head | Manager | Massachusetts |
| 27 | William Lynch | 19 | Son | — | Massachusetts |
| 28 | Everett Urquhart | 55 | Head | Engineer | Canada English |
| 29 | Mary Urquhart | 54 | Wife | — | Canada English |
| 30 | William J Griffiths | 33 | Head | Woodworker | Massachusetts |
| 31 | Mary E Griffiths | 30 | Wife | — | Massachusetts |
| 32 | William J Jr Griffiths | 6 | Son | — | Massachusetts |
| 33 | Robert Griffiths | 4 | Son | — | Massachusetts |
| 34 | Martin G Livingstone | 35 | Head | Cook | Canada English |
| 35 | Angie M Livingstone | 33 | Wife | — | Massachusetts |
| 36 | Herbert A Livingstone | 13 | Son | — | Massachusetts |
| 37 | Rita L Livingstone | 11 | Daughter | — | Massachusetts |
| 38 | Thomas G Livingstone | 9 | Son | — | Massachusetts |
| 39 | John Livingstone | 7 | Son | — | Massachusetts |
| 40 | Robert Livingstone | 5 | Son | — | Massachusetts |
| 41 | Margaret T Murphy | 56 | Head | — | Massachusetts |
| 42 | James H Murphy THIS PERSON | 21 | Son | Helper | Massachusetts |
| 43 | Joseph F Murphy | 18 | Son | Laborer | Massachusetts |
| 44 | John J Murphy | 15 | Son | Shipper | Massachusetts |
| 45 | Thomas J Burke | 39 | Head | Chauffeur | Massachusetts |
| 46 | Mary E Burke | 38 | Wife | — | Massachusetts |
| 47 | Madeline Burke | 19 | Daughter | — | Massachusetts |
| 48 | Mary Burke | 17 | Daughter | — | Massachusetts |
| 49 | Thomas J Jr Burke | 15 | Son | — | Massachusetts |
| 50 | Maude E Mcgrath | 48 | Head | Practitioner | Massachusetts |
Pedigree Summary
James + 2 siblings
Gen 1 · 4 parents
~0.92
Max depth 4 (1900–1950 window)
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)