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John Murdock — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Plymouth-County, Massachusetts
Our Model Tree links this John Murdock across the 1930 and 1940 US Censuses in Plymouth-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1927), then head of a 5-person household.
Age 13
b. ~1927
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Plymouth-County, Massachusetts |
| Surname | Murdock |
| Given Name | John H. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Lakeville Town |
| 1935 Residence (County) | Plymouth |
| Additional Details | |
| Industry | 0 |
| Highest Grade | H-1 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Lakeville Town |
| Est. Birth Year | ~1927 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Murdock | Son | — | 13 | ~1927 |
| Agnes Murdock | Daughter | — | 9 | ~1931 |
| Eileen Murdock | Daughter | — | 15 | ~1925 |
| Mary Murdock | Spouse | — | 43 | ~1897 |
| Harriet Murdock | Daughter | — | 11 | ~1929 |
Census Appearances
1930
Plymouth, Massachusetts
Son, age 3
Plymouth, Massachusetts · implied b. ~1927 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Murdock |
| Given Name | John Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Scotland |
| Mother's Birthplace | Ireland South |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Plymouth-County, Massachusetts
Son, age 13
Plymouth-County, Massachusetts · implied b. ~1927 — 5 household members
| Surname | Murdock |
| Given Name | John H. Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Lakeville Town |
| 1935 Residence (County) | Plymouth |
| Industry | 0 |
| Highest Grade | H-1 |
| 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 John Murdock across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Murdock
Son · 1940 · age 13 · b. ~1927 · Massachusetts
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Sibling
Agnes Murdock
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Harriet Murdock
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eileen Murdock
Sibling · 1940 · 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
1940 US Federal Census — Plymouth-County, Massachusetts
Open full size
1940 US Federal Census — Plymouth-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01638-00578)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Mary E. Murdock | 43 | Wife | Housekeeper | England |
| 42 | Eileen A. Murdock | 15 | Daughter | — | Massachusetts |
| 43 | John H. Jr. Murdock THIS PERSON | 13 | Son | — | Massachusetts |
| 44 | Harriet B. Murdock | 11 | Daughter | — | Massachusetts |
| 45 | Agnes S. Murdock | 9 | Daughter | — | Massachusetts |
| 46 | Joseph G. Carbone | 50 | Head | Power Plant | Massachusetts |
| 47 | Beatrice A. Carbone | 37 | Wife | — | Massachusetts |
| 48 | Joseph Carbone | 17 | Son | — | Massachusetts |
| 49 | Leonard C. Carbone | 15 | Son | — | Massachusetts |
| 50 | Lottie E. Wilbur | 54 | Mother-in-law | — | Massachusetts |
| 51 | Herbert E. Tribou | 63 | Uncle | — | Massachusetts |
| 52 | Glen W. Perkins | 50 | Head | Plumber | Massachusetts |
| 53 | Eva H. Perkins | 44 | Wife | — | Massachusetts |
| 54 | Russell W. Perkins | 18 | Son | — | Massachusetts |
| 55 | Cuthbert G. Bowles | 42 | Head | Varnish Maker | Massachusetts |
| 56 | Verna C. Bowles | 41 | Wife | — | Massachusetts |
| 57 | Donald F. Bowles | 14 | Son | — | Massachusetts |
| 58 | Margaret Merrill | 81 | Aunt | — | Canada |
| 59 | Stephen D. Kelly | 73 | Head | Farmer | Massachusetts |
| 60 | Josephine S. Kelly | 67 | Wife | — | Massachusetts |
| 61 | Earl D. Kelly | 39 | Son | Laborer | Massachusetts |
| 62 | Jessie Brown | None | Head | — | Canada |
| 63 | Joseph M. Mello | 52 | Head | Farm Hand | Portugal |
| 64 | Mary S. Mello | 49 | Wife | — | Portugal |
| 65 | Lionel E. Mello | 24 | Son | Farm Hand | Massachusetts |
| 66 | Joseph F. Mello | 21 | Son | Farm Hand | Massachusetts |
| 67 | Armand P. Mello | 18 | Son | Farm Hand | Massachusetts |
| 68 | Edward W. Mello | 16 | Son | — | Massachusetts |
| 69 | Raphael W. Mello | 11 | Son | — | Massachusetts |
| 70 | Mary Rocha | 64 | Boarder | — | Portugal |
| 71 | Howard N. Sewall | 52 | Head | Druggist | Maine |
| 72 | Addie L. Sewall | 51 | Wife | — | Massachusetts |
| 73 | Howard P. Sewall | 19 | Son | — | Massachusetts |
| 74 | Eleanor M. Sewall | 17 | Daughter | — | Massachusetts |
| 75 | James S. Weld | 66 | Head | Heel Cutter | Massachusetts |
| 76 | Clara T. Weld | 57 | Wife | — | Massachusetts |
| 77 | Malcolm Demoranville | 24 | Son-in-law | Heel Cutter | Massachusetts |
| 78 | Bertha A. Demoranville | 20 | Daughter | Heel Tacker | Massachusetts |
| 79 | Staniel Viola A. Demoranville | 9 | Daughter | — | Massachusetts |
| 80 | James T. Willis | 52 | Head | — | Maine |
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)