JM
James Mcdermott — 1940 US Census Record
Model Tree available1940 United States Federal Census · Essex-County, Massachusetts
Our Model Tree links this James Mcdermott across the 1920, 1930 and 1940 US Censuses in Essex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents James & Gertrude — first a son (b.~1915), then head of a 4-person household.
Age 25
b. ~1915
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Essex-County, Massachusetts |
| Surname | McDermott |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Danvers Town |
| 1935 Residence (County) | Essex |
| Additional Details | |
| Occupation | Forester |
| Industry | Town Forestry Dept. |
| Class of Worker | GW |
| Hours Worked | 48 |
| Income (1939) | 1300 |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Forester |
| Township / Ward | Danvers Town |
| Est. Birth Year | ~1915 |
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 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Margaret Mcdermott | Daughter | — | 16 | ~1924 |
| Martha Mcdermott | Head | — | 53 | ~1887 |
| James Mcdermott | Son | — | 25 | ~1915 |
| Charles Mcdermott | Son | — | 18 | ~1922 |
Census Appearances
1920
Essex, Massachusetts
Son, age 6
Essex, Massachusetts · implied b. ~1914 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDermott |
| Given Name | James H |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 6 |
| 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
Essex, Massachusetts
Son, age 17
Essex, Massachusetts · implied b. ~1913 — 50 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDermott |
| Given Name | James H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Operator |
| Industry | Shoe Factory |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Essex-County, Massachusetts
Son, age 25
Essex-County, Massachusetts · implied b. ~1915 — 4 household members
| Surname | McDermott |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Danvers Town |
| 1935 Residence (County) | Essex |
| Occupation | Forester |
| Industry | Town Forestry Dept. |
| Class of Worker | GW |
| Hours Worked | 48 |
| Income (1939) | 1300 |
| 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 James Mcdermott across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father James Mcdermott (~0.92 confidence) and mother Gertrude Mcdermott (~0.92 confidence) and mother Martha Mcdermott (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Mcdermott
b. ~1883
Source father
● Household
· direct · ~0.92
Mother
Gertrude Mcdermott
b. ~1887
Source mother
● Household
· direct · ~0.92
Mother
Martha Mcdermott
b. ~1887
Source mother
● Household
· direct · ~0.92
This person
Anchor record
James Mcdermott
Son · 1940 · age 25 · b. ~1915 · Massachusetts
★ You are viewing this record
Sibling
Charles Mcdermott
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Mcdermott
Sibling · 1940 · age 16
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 — Essex-County, Massachusetts
Open full size
1940 US Federal Census — Essex-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01578-00626)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Wilfred Swindell | 18 | Head | New Worker | Massachusetts |
| 42 | Frank Swindell | 17 | Son | — | Massachusetts |
| 43 | George Jr Swindell | 16 | Son | — | Massachusetts |
| 44 | Elden Swindell | 15 | Son | — | Massachusetts |
| 45 | John Swindell | 14 | Son | — | Massachusetts |
| 46 | Lorna Swindell | 13 | Daughter | — | Massachusetts |
| 47 | Thomas J. Cameron | 29 | Head | Truck Driver | Maine |
| 48 | Helen Cameron | 28 | Wife | — | Massachusetts |
| 49 | Thomas Jr. Cameron | 7 | Son | — | Massachusetts |
| 50 | Robert Cameron | 5 | Son | — | Massachusetts |
| 51 | Lloyd Pennell | 29 | Head | Automobile Mechanic | Massachusetts |
| 52 | Alice Pennell | 31 | Wife | — | Massachusetts |
| 53 | John Emilian | 22 | Head | — | Massachusetts |
| 54 | Lila D. Emilian | 21 | Wife | Saleswoman | Massachusetts |
| 55 | Willard Bernan | 24 | Head | Garment Worker | Massachusetts |
| 56 | Bernadette Bernan | 22 | Wife | — | Massachusetts |
| 57 | Alfred J. Plante | 38 | Head | Leather Worker | New Hampshire |
| 58 | Melvina Plante | 34 | Wife | — | Massachusetts |
| 59 | Lorayne Plante | 11 | Daughter | — | Massachusetts |
| 60 | Joan Plante | 9 | Daughter | — | Massachusetts |
| 61 | Alfred Jr. Plante | 8 | Son | — | Massachusetts |
| 62 | Arthur Plante | 6 | Son | — | Massachusetts |
| 63 | Leo Plante | 2 | Son | — | Massachusetts |
| 64 | William Klosowski | 30 | Head | Florist | Massachusetts |
| 65 | Rose Klosowski | 27 | Wife | — | Massachusetts |
| 66 | Natalie Klosowski | 7 | Daughter | — | Massachusetts |
| 67 | Beverly Klosowski | 2 | Daughter | — | Massachusetts |
| 68 | William Klosowski | 1 | Son | — | Massachusetts |
| 69 | Natalie M. Lee | 53 | Mother-in-law | — | Massachusetts |
| 70 | Donald Lee | 20 | Brother-in-law | — | Massachusetts |
| 71 | Martha Mcdermott | 53 | Head | Housekeeper | Massachusetts |
| 72 | James Mcdermott THIS PERSON | 25 | Son | Forester | Massachusetts |
| 73 | Charles Mcdermott | 18 | Son | — | Massachusetts |
| 74 | Margaret Mcdermott | 16 | Daughter | — | Massachusetts |
| 75 | John T. Fitzgerald | 38 | Head | Salesman | Massachusetts |
| 76 | Catherine Fitzgerald | 31 | Wife | — | Massachusetts |
| 77 | John P. Jr. Fitzgerald | 10 | Son | — | Massachusetts |
| 78 | Carroll A. Fitzgerald | 1 | Daughter | — | Massachusetts |
| 79 | Albert Turenne | 37 | Head | Carpenter | Canada |
| 80 | Victoria Turenne | 35 | Wife | — | Massachusetts |
Pedigree Summary
James + 2 siblings
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
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)