DM
David Murphy — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this David Murphy across the 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1914), then head of a 6-person household.
Age 26
b. ~1914
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Murphy |
| Given Name | David J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Malden City |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | Chauffeur |
| Industry | Bakery |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 400 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Chauffeur |
| Township / Ward | Malden City |
| Est. Birth Year | ~1914 |
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 David | Age | Birth yr |
|---|---|---|---|---|
| Elizabeth Murphy | Daughter | — | 29 | ~1911 |
| Joseph Murphy | Son | — | 24 | ~1916 |
| David Murphy | Son | — | 26 | ~1914 |
| Cornelius Murphy | Head | — | 60 | ~1880 |
| Mary Murphy | Spouse | — | 56 | ~1884 |
| William Murphy | Son | — | 20 | ~1920 |
Census Appearances
1930
Middlesex, Massachusetts
Son, age 15
Middlesex, Massachusetts · implied b. ~1915 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Murphy |
| Given Name | David Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Scotland |
| Can Read/Write | Yes |
| Veteran | No |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Son, age 26
Middlesex-County, Massachusetts · implied b. ~1914 — 6 household members
| Surname | Murphy |
| Given Name | David J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Malden City |
| 1935 Residence (County) | Middlesex |
| Occupation | Chauffeur |
| Industry | Bakery |
| Class of Worker | PW |
| Hours Worked | 44 |
| Income (1939) | 400 |
| Highest Grade | Hs 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 26 · b. ~1914 · Massachusetts
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Sibling
Elizabeth Murphy
Sibling · 1940 · age 29
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Murphy
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Murphy
Sibling · 1940 · age 24
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 — Middlesex-County, Massachusetts
Open full size
1940 US Federal Census — Middlesex-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01608-00268)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John H. Dunn | 80 | Head | — | New York |
| 2 | Rose A. Dunn | 72 | Wife | — | Ireland-Eire |
| 3 | Mary M. Dunn | 46 | Daughter | Book-Keeper | Massachusetts |
| 4 | Leonard G. Dunn | 36 | Head | Fireman | Massachusetts |
| 5 | Mary C. Dunn | 31 | Wife | — | Massachusetts |
| 6 | Leonard G., Jr. Dunn | 6 | Son | — | Massachusetts |
| 7 | Lawrence Dunn | 3 | Son | — | Massachusetts |
| 8 | Mary E. Rosdahl | 65 | Head | — | Massachusetts |
| 9 | Cornelius Rosdahl | 27 | Son | Salesman | Massachusetts |
| 10 | Theodore P. Rosdahl | 24 | Son | Dye Maker | Massachusetts |
| 11 | Patrick J. Fitzgerald | 44 | Head | Calendar Man | Ireland-Eire |
| 12 | Mary G. Fitzgerald | 43 | Wife | — | Ireland-Eire |
| 13 | Francis J. Fitzgerald | 19 | Son | Carton Boy | Massachusetts |
| 14 | Mary M. Fitzgerald | 16 | Daughter | — | Massachusetts |
| 15 | Patricia J. Fitzgerald | 11 | Daughter | — | Massachusetts |
| 16 | Joseph J. Flanagan | 41 | Head | Laborer | Massachusetts |
| 17 | Mary E. Flanagan | 42 | Wife | — | Massachusetts |
| 18 | Joseph J. Flanagan | 20 | Son | Machinist | Massachusetts |
| 19 | Philip F. Flanagan | 13 | Son | Laborer | Massachusetts |
| 20 | Elizabeth M. Flanagan | 12 | Daughter | — | Massachusetts |
| 21 | Catherine J. Flanagan | 13 | Daughter | — | Massachusetts |
| 22 | Edward Flanagan | 10 | Son | — | Massachusetts |
| 23 | Anne B. Flanagan | 9 | Daughter | — | Massachusetts |
| 24 | Dolan, Anne D. Flanagan | 75 | Mother-in-law | — | Massachusetts |
| 25 | Peter J. Myette | 54 | Head | Electric Fitting | Canada-French |
| 26 | Marie E. Myette | 52 | Wife | — | Massachusetts |
| 27 | Arthur J. Myette | 25 | Son | Office Manager | Massachusetts |
| 28 | Michael J. Walsh | 71 | Head | — | Massachusetts |
| 29 | Bartholomew J. Walsh | 50 | Brother | — | Massachusetts |
| 30 | Timothy J. Sullivan | 46 | Head | Laborer | Ireland-Eire |
| 31 | Margaret M. Sullivan | 45 | Wife | — | Ireland-Eire |
| 32 | George C. Smith | 50 | Lodger | — | Massachusetts |
| 33 | Cornelius J. Murphy | 60 | Head | Laborer | Ireland-Eire |
| 34 | Mary J. Murphy | 56 | Wife | — | Ireland-Eire |
| 35 | Elizabeth C. Murphy | 29 | Daughter | — | Massachusetts |
| 36 | David J. Murphy THIS PERSON | 26 | Son | Chauffeur | Massachusetts |
| 37 | Joseph P. Murphy | 24 | Son | Shipper | Massachusetts |
| 38 | William F. Murphy | 20 | Son | Truck Driver | Massachusetts |
| 39 | George L. Durant | 38 | Head | Automatic Sprinkler Fitter | Massachusetts |
| 40 | Mary U. Durant | 34 | Wife | — | 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)