JM
John Murphy — 1930 US Census Record
Model Tree available1930 United States Federal Census · Suffolk, Massachusetts
Our Model Tree links this John Murphy across the 1910, 1920 and 1930 US Censuses in Suffolk, Massachusetts (XGBoost, ~Confirmed), with identified parents John & John — first a son (b.~1906), then head of a 13-person household.
Age 24
b. ~1906
Male
Son
Born: Massachusetts
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Suffolk, Massachusetts |
| Surname | Murphy |
| Given Name | John J. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Additional Details | |
| Occupation | Sheet Metal Worker |
| Industry | Sheet Metal |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Sheet Metal Worker |
| Township / Ward | City Of Boston |
| Est. Birth Year | ~1906 |
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.
13 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Helena Murphy | Daughter | — | 21 | ~1909 |
| Elizabeth Murphy | Daughter | — | 19 | ~1911 |
| Alice Murphy | Daughter | — | 16 | ~1914 |
| Susan Murphy | Daughter | — | 19 | ~1911 |
| Ruth Murphy | Daughter | — | 15 | ~1915 |
| Catherine Murphy | Daughter | — | 13 | ~1917 |
| John Murphy | Head | — | 47 | ~1883 |
| John Murphy | Son | — | 24 | ~1906 |
| Eugene Murphy | Son | — | 6 | ~1924 |
| Henry Murphy | Son | — | 11 | ~1919 |
| George Murphy | Son | — | 8 | ~1922 |
| Charles Murphy | Son | — | 23 | ~1907 |
| Elizabeth Murphy | Spouse | — | 47 | ~1883 |
Census Appearances
1910
Middlesex, Massachusetts
Son, age 3
Middlesex, Massachusetts · implied b. ~1907 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Murphy |
| Given Name | John J. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| 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 13
Middlesex, Massachusetts · implied b. ~1907 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Murphy |
| Given Name | John J. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| 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
Suffolk, Massachusetts
Son, age 24
Suffolk, Massachusetts · implied b. ~1906 — 13 household members
| Surname | Murphy |
| Given Name | John J. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Sheet Metal Worker |
| Industry | Sheet Metal |
| Class of Worker | W |
| Can Read/Write | Yes |
| Veteran | No |
| 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 John Murphy across 3 US Census years (1910, 1920 and 1930) in 2 locations, using XGBoost record linkage. Identified parents: father John Murphy (~0.92 confidence) and father John Murphy (~0.92 confidence) and father John Murphy (~0.92 confidence) and mother Mary Murphy (~0.92 confidence) and mother Elizabeth Murphy (~0.92 confidence) and mother Mary Murphy (~0.92 confidence). The pedigree spans 1 generation with 6 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Murphy
b. ~1883
Source father
● Household
· direct · ~0.92
Father
John Murphy
b. ~1875
Source father
● Household
· direct · ~0.92
Father
John Murphy
b. ~1874
Source father
● Household
· direct · ~0.92
Mother
Mary Murphy
b. ~1874
Source mother
● Household
· direct · ~0.92
Mother
Elizabeth Murphy
b. ~1883
Source mother
● Household
· direct · ~0.92
Mother
Mary Murphy
b. ~1875
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Murphy
Son · 1930 · age 24 · b. ~1906 · Massachusetts
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Sibling
Helena Murphy
Sibling · 1930 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Murphy
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Susan Murphy
Sibling · 1930 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Murphy
Sibling · 1930 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Murphy
Sibling · 1930 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Henry Murphy
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Murphy
Sibling · 1930 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eugene Murphy
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Murphy
Sibling · 1930 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Murphy
Sibling · 1930 · age 19
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 — Suffolk, Massachusetts
Open full size
1930 US Federal Census — Suffolk, Massachusetts
Page Contents
50 people indexed on this census page (ia:1930:massachusettscensus00reel943:0259)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Catherine Kinsella | 58 | Head | None | Massachusetts |
| 2 | Michael L. Kinsella | 28 | Son | Salesman | Massachusetts |
| 3 | Catherine Kinsella | 25 | Daughter | Operator | Massachusetts |
| 4 | John J. Murphy | 47 | Head | Janitor | Massachusetts |
| 5 | Elizabeth M. Murphy | 47 | Wife | None | Massachusetts |
| 6 | John J. Jr. Murphy THIS PERSON | 24 | Son | Sheet Metal Worker | Massachusetts |
| 7 | Charles V. Murphy | 23 | Son | Glasser | Massachusetts |
| 8 | Helena R. Murphy | 21 | Daughter | Bookbinder | Massachusetts |
| 9 | Susan Murphy | 19 | Daughter | Stenographer | Massachusetts |
| 10 | Elizabeth Murphy | 19 | Daughter | Machinist | Massachusetts |
| 11 | Alice M. Murphy | 16 | Daughter | Machinist | Massachusetts |
| 12 | Ruth B. Murphy | 15 | Daughter | Student | Massachusetts |
| 13 | Catherine Murphy | 13 | Daughter | Student | Massachusetts |
| 14 | Henry C. Murphy | 11 | Son | Student | Massachusetts |
| 15 | George Murphy | 8 | Son | Student | Massachusetts |
| 16 | Eugene F. Murphy | 6 | Son | Student | Massachusetts |
| 17 | Oscar Devery | 48 | Head | Conductor | Massachusetts |
| 18 | Sarah Devery | 48 | Wife | None | Massachusetts |
| 19 | Mary Devery | 27 | Daughter | Box Maker | Massachusetts |
| 20 | Edward Andrews | 22 | Son in law | Chauffeur | Massachusetts |
| 21 | Edith Andrews | 22 | Daughter | None | Massachusetts |
| 22 | Dennis M. Condon | 48 | Head | Captain | Massachusetts |
| 23 | Sarah E. Condon | 46 | Wife | None | Massachusetts |
| 24 | William Condon | 23 | Son | Helper | Massachusetts |
| 25 | Francis Condon | 21 | Daughter | Teacher | Massachusetts |
| 26 | Margaret Condon | 20 | Daughter | Stenographer | Massachusetts |
| 27 | David Condon | 17 | Son | Helper | Massachusetts |
| 28 | Lucy Condon | 15 | Daughter | Student | Massachusetts |
| 29 | Anna E. Condon | 11 | Daughter | Student | Massachusetts |
| 30 | Dennis M. Jr. Condon | 6 | Son | Student | Massachusetts |
| 31 | Marie E. Condon | 4 | Daughter | None | Massachusetts |
| 32 | Michael Keefe | 64 | Head | Freight Handler | Irish Free State |
| 33 | Annie Keefe | 53 | Wife | None | Irish Free State |
| 34 | Michael C. Keefe | 25 | Son | Chauffeur | Massachusetts |
| 35 | Frances Keefe | 22 | Daughter | Operator | Massachusetts |
| 36 | John Keefe | 18 | Son | Wireman | Massachusetts |
| 37 | Grace M. Welch | 52 | Head | None | Massachusetts |
| 38 | Helen V. Welch | 28 | Daughter | Supervisor | Massachusetts |
| 39 | Charles Welch | 27 | Son | Chauffeur | Massachusetts |
| 40 | Walter Welch | 25 | Son | Weigher | Massachusetts |
| 41 | Claire Welch | 13 | Daughter | Student | Massachusetts |
| 42 | John J. O'Brien | 38 | Head | Instructor | Massachusetts |
| 43 | Grace E. O'Brien | 37 | Wife | None | Massachusetts |
| 44 | Grace E. O'Brien | 10 | Daughter | Student | Massachusetts |
| 45 | Marion L. O'Brien | 8 | Daughter | Student | Massachusetts |
| 46 | Ruth M. O'Brien | 4 | Daughter | None | Massachusetts |
| 47 | Frank S. Geaswell | 44 | Head | Garage Hand | Massachusetts |
| 48 | Florence Geaswell | 44 | Wife | None | Massachusetts |
| 49 | Frank S. Jr. Geaswell | 21 | Son | Chauffeur | Massachusetts |
| 50 | Florence Geaswell | 21 | Daughter | Salesman | Massachusetts |
Related Census Records
Pedigree Summary
John + 10 siblings
Gen 1 · 6 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)