JG
James Grady — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this James Grady across the 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1924), then head of a 14-person household.
Age 16
b. ~1924
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Grady |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Somerville City |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | H 2 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Somerville City |
| Est. Birth Year | ~1924 |
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.
14 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Charles Perlin | Other | — | 83 | ~1857 |
| Mildred Grady | Daughter | — | 23 | ~1917 |
| William Grady | Son | — | 19 | ~1921 |
| James Grady | Son | — | 16 | ~1924 |
| Thomas Grady | Son | — | 14 | ~1926 |
| Geneva Grady | Spouse | — | 41 | ~1899 |
| James Perlin | Other | — | 45 | ~1895 |
| Charles Grady | Son | — | 18 | ~1922 |
| William Grady | Head | — | 43 | ~1897 |
| Lorraine Grady | Daughter | — | 9 | ~1931 |
| June Grady | Daughter | — | 5 | ~1935 |
| Edward Grady | Son | — | 7 | ~1933 |
| Linnea Grady | Daughter | — | 13 | ~1927 |
| Robert Grady | Son | — | 10 | ~1930 |
Census Appearances
1930
Middlesex, Massachusetts
Son, age 5
Middlesex, Massachusetts · implied b. ~1925 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Grady |
| Given Name | James J |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Son, age 16
Middlesex-County, Massachusetts · implied b. ~1924 — 14 household members
| Surname | Grady |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Somerville City |
| 1935 Residence (County) | Middlesex |
| Income (1939) | 0 |
| Highest Grade | H 2 |
| 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 Grady across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Grady
Son · 1940 · age 16 · b. ~1924 · Massachusetts
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Sibling
Lorraine Grady
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Linnea Grady
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Grady
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Grady
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
June Grady
Sibling · 1940 · age 5
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edward Grady
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mildred Grady
Sibling · 1940 · age 23
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Grady
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Grady
Sibling · 1940 · age 18
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
39 people indexed on this census page (nara:1940:m-t0627-01702-00775)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Ralph De Simone | 35 | Head | Pipe Layer | Italy |
| 42 | Laura De Simone | 33 | Wife | — | English Canada |
| 43 | Benjamin White | 23 | Head | Chauffeur | Massachusetts |
| 44 | Mary A White | 21 | Wife | — | Massachusetts |
| 45 | William Grady | 43 | Head | Foreman | Massachusetts |
| 46 | Geneva Grady | 41 | Wife | — | Massachusetts |
| 47 | Mildred Grady | 23 | Daughter | — | Massachusetts |
| 48 | William Jr Grady | 19 | Son | — | Massachusetts |
| 49 | Charles Grady | 18 | Son | — | Massachusetts |
| 50 | James Grady THIS PERSON | 16 | Son | — | Massachusetts |
| 51 | Thomas Grady | 14 | Son | — | Massachusetts |
| 52 | Linnea Grady | 13 | Daughter | — | Massachusetts |
| 53 | Robert Grady | 10 | Son | — | Massachusetts |
| 54 | Lorraine Grady | 9 | Daughter | — | Massachusetts |
| 55 | Edward Grady | 7 | Son | — | Massachusetts |
| 56 | June Grady | 5 | Daughter | — | Massachusetts |
| 57 | Charles H Perlin | 83 | Father-in-law | — | Massachusetts |
| 58 | James W Perlin | 45 | Brother-in-law | — | Massachusetts |
| 59 | Ernest Widmead | 71 | Head | Janitor | England |
| 60 | Ella Widmead | 65 | Wife | — | Maine |
| 61 | Edith Widmead | 30 | Daughter | Salesgirl | Massachusetts |
| 62 | Albert Mcclellan | 53 | Head | — | Massachusetts |
| 63 | Lucy P Mcclellan | 49 | Wife | — | Massachusetts |
| 64 | Virginia Mcclellan | 25 | Daughter | Salesgirl | Massachusetts |
| 65 | Caroline Mcclellan | 23 | Daughter | Waitress | Massachusetts |
| 66 | Laura Mcclellan | 20 | Daughter | — | Massachusetts |
| 67 | Albert Mcclellan | 18 | Son | — | Massachusetts |
| 68 | Virginia Mcclellan | 14 | Daughter | — | Massachusetts |
| 69 | Dorothy Mcclellan | 13 | Daughter | — | Massachusetts |
| 70 | Robert Mcclellan | 10 | Son | — | Massachusetts |
| 71 | Joan Mcclellan | 7 | Daughter | — | Massachusetts |
| 72 | James Peters | 47 | Head | Laborer | Albania |
| 73 | Werdita Peters | 35 | Wife | — | Albania |
| 74 | William Peters | 16 | Son | — | Massachusetts |
| 75 | Mary Peters | 13 | Daughter | — | Massachusetts |
| 76 | Peter Peters | 5 | Son | — | Massachusetts |
| 77 | Chester Garland | 55 | Head | Foreman | New Hampshire |
| 78 | Inez Garland | 27 | Wife | — | English Canada |
| 79 | Brenda Garland | 0 | Daughter | — | 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)