DM
David Murphy — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this David Murphy across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1911), then head of a 7-person household.
Age 29
b. ~1911
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Murphy |
| Given Name | David |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Occupation | Clerk |
| Industry | Wholesale Men's Hats |
| Class of Worker | PW |
| Hours Worked | 45 |
| Income (1939) | 1040 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Clerk |
| Township / Ward | Boston City |
| Est. Birth Year | ~1911 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to David | Age | Birth yr |
|---|---|---|---|---|
| David Murphy | Head | — | 58 | ~1882 |
| Anna Murphy | Daughter | — | 22 | ~1918 |
| Mary Murphy | Daughter | — | 23 | ~1917 |
| Catherine Murphy | Spouse | — | 55 | ~1885 |
| David Murphy | Son | — | 29 | ~1911 |
| Rita Murphy | Daughter | — | 19 | ~1921 |
| Alice Murphy | Daughter | — | 14 | ~1926 |
Census Appearances
1930
Suffolk, Massachusetts
Son, age 19
Suffolk, Massachusetts · implied b. ~1911 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Murphy |
| Given Name | David |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Occupation | Salesman |
| Industry | Knitting Mill |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Son, age 29
Suffolk-County, Massachusetts · implied b. ~1911 — 7 household members
| Surname | Murphy |
| Given Name | David |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Occupation | Clerk |
| Industry | Wholesale Men's Hats |
| Class of Worker | PW |
| Hours Worked | 45 |
| Income (1939) | 1040 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| 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 David Murphy across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
David Murphy
Son · 1940 · age 29 · b. ~1911 · Massachusetts
★ You are viewing this record
Sibling
Anna Murphy
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Murphy
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Murphy
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rita Murphy
Sibling · 1940 · 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
1940 US Federal Census — Suffolk-County, Massachusetts
Open full size
1940 US Federal Census — Suffolk-County, Massachusetts
Page Contents
39 people indexed on this census page (nara:1940:m-t0627-01669-00782)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John F. Cawley | 16 | Son | — | Massachusetts |
| 2 | Mary F. Cawley | 13 | Daughter | — | Massachusetts |
| 3 | James J. Cawley | 6 | Son | — | Massachusetts |
| 4 | Nellie Pasquali | 41 | Head | — | Massachusetts |
| 5 | Ralph Pasquali | 16 | Son | — | Massachusetts |
| 6 | Mary E. Sullivan | 53 | Lodger | Salesgirl | Massachusetts |
| 7 | Catherine D. Potter | 54 | Head | — | Massachusetts |
| 8 | George Potter | 32 | Son | Shipper | Massachusetts |
| 9 | William T. Mccormack | 57 | Brother | — | Massachusetts |
| 10 | Daniel H. May | 42 | Head | Salesman | Washington D.C. |
| 11 | Bessie May | 41 | Wife | — | Washington D.C. |
| 12 | Daniel H. Jr. May | 22 | Son | Inspector | Washington D.C. |
| 13 | Doris May | 11 | Daughter | — | Massachusetts |
| 14 | Charles E. May | 6 | Son | — | Massachusetts |
| 15 | Charles Leonardi | 26 | Head | Salesman | Massachusetts |
| 16 | Alice Leonardi | 26 | Wife | — | Massachusetts |
| 17 | Jeanne Leonardi | 7 | Daughter | — | Massachusetts |
| 18 | Bartholomew D. Lennon | 58 | Head | Station Engineer | Ireland |
| 19 | Margaret Lennon | 63 | Wife | — | Ireland |
| 20 | Mary Lennon | 26 | Daughter | Typist | Massachusetts |
| 21 | Martin J. Lennon | 22 | Son | Sprinkler | Massachusetts |
| 22 | Bartholomew Jr. Lennon | 20 | Son | New Worker | Massachusetts |
| 23 | William J. Nichols | 42 | Head | Shipper | Massachusetts |
| 24 | Anne B. Nichols | 46 | Wife | — | Canada-English |
| 25 | Anna Marie Nichols | 13 | Daughter | — | Massachusetts |
| 26 | Joseph N. Gildea | 31 | Head | Sign Painter | Massachusetts |
| 27 | Louisa E. Gildea | 56 | Mother | — | Massachusetts |
| 28 | William Gildea | 27 | Brother | Asbestos | Massachusetts |
| 29 | George D. Johnson | 30 | Head | Clerk | Massachusetts |
| 30 | Louise D. Johnson | 29 | Sister | — | Massachusetts |
| 31 | Louise V. Johnson | 5 | Niece | — | Massachusetts |
| 32 | David Murphy | 58 | Head | Laborer | Ireland |
| 33 | Catherine Murphy | 55 | Wife | — | Ireland |
| 34 | David Murphy THIS PERSON | 29 | Son | Clerk | Massachusetts |
| 35 | Mary C. Murphy | 23 | Daughter | — | Massachusetts |
| 36 | Anna F. Murphy | 22 | Daughter | Stenographer | Massachusetts |
| 37 | Rita E. Murphy | 19 | Daughter | — | Massachusetts |
| 38 | Alice P. Murphy | 14 | Daughter | — | Massachusetts |
| 39 | Robert Hoey | 35 | Head | Transportation Clerk | Massachusetts |
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)