JH
James Hammond — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this James Hammond across the 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1925), then head of a 9-person household.
Age 15
b. ~1925
Male
Son
Born: Connecticut
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Hammond |
| Given Name | James F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Connecticut |
| 1935 Residence (City) | Somerville |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Income (1939) | 0 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same place |
| Birth State | Connecticut |
| Birth Country | United States |
| Birthplace (normalized) | connecticut |
| Township / Ward | Somerville |
| Est. Birth Year | ~1925 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| Marion Hammond | Head | — | 47 | ~1893 |
| Kathleen Cordaro | Daughter | — | 7 | ~1933 |
| Marion Cordaro | Daughter | — | 5 | ~1935 |
| Patricia Hammond | Daughter | — | 10 | ~1930 |
| George Hammond | Son | — | 18 | ~1922 |
| Joan Hammond | Daughter | — | 16 | ~1924 |
| Mary Hammond | Daughter | — | 24 | ~1916 |
| James Hammond | Son | — | 15 | ~1925 |
| Jean Hammond | Daughter | — | 3 | ~1937 |
Census Appearances
1930
Norfolk, Massachusetts
Son, age 5
Norfolk, Massachusetts · implied b. ~1925 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hammond |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Connecticut |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Connecticut |
| Birth State | Connecticut |
| Birth Country | United States |
| Birthplace (normalized) | connecticut |
1940
Middlesex-County, Massachusetts
Son, age 15
Middlesex-County, Massachusetts · implied b. ~1925 — 9 household members
| Surname | Hammond |
| Given Name | James F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Connecticut |
| 1935 Residence (City) | Somerville |
| 1935 Residence (County) | Middlesex |
| Income (1939) | 0 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same place |
| Birth State | Connecticut |
| Birth Country | United States |
| Birthplace (normalized) | connecticut |
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 Hammond across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Hammond
Son · 1940 · age 15 · b. ~1925 · Massachusetts
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Sibling
Mary Hammond
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Hammond
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Kathleen Cordaro
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joan Hammond
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patricia Hammond
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jean Hammond
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marion Cordaro
Sibling · 1940 · age 5
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-t0627-01703-00103)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Mary E. Schouler | 31 | Head | Home Economics Teacher | Massachusetts |
| 42 | Marion F. Hammond | 47 | Head | — | Connecticut |
| 43 | Mary R. Hammond | 24 | Daughter | Housework | Rhode Island |
| 44 | George M. Hammond | 18 | Son | — | Massachusetts |
| 45 | Joan W. Hammond | 16 | Daughter | — | Massachusetts |
| 46 | James F. Hammond THIS PERSON | 15 | Son | — | Connecticut |
| 47 | Patricia A. Hammond | 10 | Daughter | — | Massachusetts |
| 48 | Kathleen A. Cordaro | 7 | Daughter | — | Massachusetts |
| 49 | Marion P. Cordaro | 5 | Daughter | — | Massachusetts |
| 50 | Jean F. Hammond | 3 | Daughter | — | Massachusetts |
| 51 | Margaret A. Mays | 34 | Head | — | Massachusetts |
| 52 | Virginia D. Mays | 33 | Daughter | Stenographer | Massachusetts |
| 53 | John J. Shea | 72 | Brother | — | Massachusetts |
| 54 | Elizabeth A. Shea | 67 | Sister | Housework | Massachusetts |
| 55 | Paul J. Mcmahon | 28 | Head | Salesman | Massachusetts |
| 56 | Dorothy G. Mcmahon | 28 | Wife | — | Massachusetts |
| 57 | Mary Mcmahon | 3 | Daughter | — | Massachusetts |
| 58 | William A. West | 65 | Lodger | Jobber | Massachusetts |
| 59 | John H. Sheehan | 63 | Head | Laborer | Massachusetts |
| 60 | Elizabeth G. Sheehan | 55 | Wife | — | Massachusetts |
| 61 | Mary A. Hurley | 44 | Head | Candy Maker | Massachusetts |
| 62 | Wrong Information Only One In This Household | None | — | — | — |
| 63 | William R. Douglas | 30 | Head | Shipper | Massachusetts |
| 64 | Sally R. Douglas | 30 | Wife | Salesgirl | England |
| 65 | Berle B. Boyce | 48 | Head | — | Vermont |
| 66 | Beverly Boyce | 21 | Daughter | Stenographer | New Hampshire |
| 67 | Vernon Boyce | 9 | Son | — | New Hampshire |
| 68 | Michael F. Hanley | 67 | Head | Foreman | Ireland |
| 69 | Annie E. Hanley | 61 | Wife | — | Scotland |
| 70 | Eugene H. Eckert | 31 | Head | Wiper | Massachusetts |
| 71 | Myrtle M. Eckert | 28 | Wife | — | Massachusetts |
| 72 | Michael J. Conley | 53 | Head | Supervisor | Ireland |
| 73 | Josephine A. Conley | 46 | Wife | — | Massachusetts |
| 74 | Mark F. Conley | 23 | Son | Messenger | Massachusetts |
| 75 | John J. Conley | 21 | Son | — | Massachusetts |
| 76 | Madeline M. Conley | 19 | Daughter | — | Massachusetts |
| 77 | Leo J. Conley | 16 | Son | — | Massachusetts |
| 78 | Thomas D. Conley | 11 | Son | — | Massachusetts |
| 79 | Joseph K. Conley | 9 | Son | — | Massachusetts |
| 80 | Francis J. Carlin | 31 | Head | Clerk | 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)