JM
James Mclean — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this James Mclean across the 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1923), then head of a 7-person household.
Age 17
b. ~1923
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | McLean |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Lowell |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Class of Worker | 0 |
| Highest Grade | Hs 3 |
| 1935 Residence | Same House |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Lowell |
| Est. Birth Year | ~1923 |
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 James | Age | Birth yr |
|---|---|---|---|---|
| Mildred Mclean | Daughter | — | 15 | ~1925 |
| Agnes Mclean | Daughter | — | 8 | ~1932 |
| Arthur Mclean | Head | — | 45 | ~1895 |
| George Mclean | Son | — | 10 | ~1930 |
| James Mclean | Son | — | 17 | ~1923 |
| Edward Mclean | Son | — | 13 | ~1927 |
| Agnes Mclean | Spouse | — | 40 | ~1900 |
Census Appearances
1930
Middlesex, Massachusetts
Son, age 8
Middlesex, Massachusetts · implied b. ~1922 — 10 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McLean |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Son, age 17
Middlesex-County, Massachusetts · implied b. ~1923 — 7 household members
| Surname | McLean |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Lowell |
| 1935 Residence (County) | Middlesex |
| Class of Worker | 0 |
| Highest Grade | Hs 3 |
| 1935 Residence | Same House |
| 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 Mclean across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Mclean
Son · 1940 · age 17 · b. ~1923 · Massachusetts
★ You are viewing this record
Sibling
Mildred Mclean
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Mclean
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Agnes Mclean
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Mclean
Sibling · 1940 · age 13
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-t0627-01692-00250)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Malcolm Brown | 22 | Head | Shipper | Massachusetts |
| 42 | Barbara Brown | 0 | Daughter | — | Massachusetts |
| 43 | Alex Buswell | 60 | Head | Foreman | New Hampshire |
| 44 | Lena Buswell | 58 | Wife | — | New Hampshire |
| 45 | Edward Jones | 58 | Head | Electrician | Wales |
| 46 | Catherine Jones | 77 | Mother | — | Wales |
| 47 | Charles R Sawyer | 41 | Head | Clerk | Massachusetts |
| 48 | Edna Sawyer | 40 | Wife | Saleswoman | Massachusetts |
| 49 | Robert Sawyer | 17 | Son | — | Massachusetts |
| 50 | Barbara Sawyer | 15 | Daughter | — | Ohio |
| 51 | Richard Sawyer | 10 | Son | — | Massachusetts |
| 52 | Ronald Sawyer | 5 | Son | — | Massachusetts |
| 53 | John Sawyer | 4 | Son | — | Massachusetts |
| 54 | Mary Sawyer | 2 | Daughter | — | Massachusetts |
| 55 | John O Burman | 66 | Head | Engineer | Sweden |
| 56 | — | None | — | — | — |
| 57 | Carl Mccaughey | 27 | Head | Linotype | Massachusetts |
| 58 | Dorothy Mccaughey | 26 | Wife | — | England |
| 59 | Walter Flynn | 34 | Head | Leather Worker | Massachusetts |
| 60 | Marion Flynn | 34 | Daughter | — | Massachusetts |
| 61 | Anne Flynn | 5 | Daughter | — | Massachusetts |
| 62 | Walter Flynn | 3 | Son | — | Massachusetts |
| 63 | Thomas Hogan | 48 | Head | Shoe Worker | Massachusetts |
| 64 | Mary Hogan | 44 | Wife | — | Massachusetts |
| 65 | William Hogan | 22 | Son | Shoe Worker | Massachusetts |
| 66 | George Cummings | 54 | Head | Chauffeur | Massachusetts |
| 67 | Ada Cummings | 55 | Wife | — | Massachusetts |
| 68 | Cecelia Cummings | 24 | Daughter | Stenographer | Massachusetts |
| 69 | Gladys Cummings | 22 | Daughter | Cashier | Massachusetts |
| 70 | Clayton Cummings | 16 | Son | — | Massachusetts |
| 71 | Arthur Mclean | 45 | Head | Stamp Clerk | Massachusetts |
| 72 | Agnes Mclean | 40 | Wife | — | Massachusetts |
| 73 | James Mclean THIS PERSON | 17 | Son | — | Massachusetts |
| 74 | Mildred Mclean | 15 | Daughter | — | Massachusetts |
| 75 | Edward Mclean | 13 | Son | — | Massachusetts |
| 76 | George Mclean | 10 | Son | — | Massachusetts |
| 77 | Agnes Mclean | 8 | Daughter | — | Massachusetts |
| 78 | Kenneth Madden | 47 | Head | Letter Carrier | New Jersey |
| 79 | Gertrude Madden | 46 | Wife | — | Boston |
| 80 | Mary Madden | 15 | Daughter | — | Boston |
Related Census Records
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)