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James Blake — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this James Blake 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 | Blake |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Malden city |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Highest Grade | H 2 |
| 1935 Residence | Same House |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Malden City |
| 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 |
|---|---|---|---|---|
| Norma Blake | Spouse | — | 51 | ~1889 |
| Catherine Blake | Daughter | — | 15 | ~1925 |
| Mary Blake | Daughter | — | 19 | ~1921 |
| John Blake | Head | — | 51 | ~1889 |
| Daniel Blake | Son | — | 13 | ~1927 |
| James Blake | Son | — | 17 | ~1923 |
| John Blake | Son | — | 16 | ~1924 |
Census Appearances
1930
Middlesex, Massachusetts
Son, age 7
Middlesex, Massachusetts · implied b. ~1923 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Blake |
| Given Name | James |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | England |
| Mother's Birthplace | Massachusetts |
| 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 | Blake |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Malden city |
| 1935 Residence (County) | Middlesex |
| Highest Grade | H 2 |
| 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 Blake across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Blake
Son · 1940 · age 17 · b. ~1923 · Massachusetts
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Sibling
John Blake
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Blake
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Daniel Blake
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Blake
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 — 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-t0627-01608-00276)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John Mcgrath | 62 | Head | Auto Repairman | English Canada |
| 2 | Mary Mcgrath | 56 | Wife | — | English Canada |
| 3 | Margaret Mahoney | 37 | Lodger | Secretary | English Canada |
| 4 | John Ryan | 62 | Head | Elevator Operator | Massachusetts |
| 5 | Julia Ryan | 58 | Wife | — | English Canada |
| 6 | John Ryan | 29 | Son | Clerk | Massachusetts |
| 7 | Delia Ryan | 65 | Sister | Rubber Shoe Maker | Massachusetts |
| 8 | Edward Stanford | 46 | Head | Fireman | Massachusetts |
| 9 | Edith Stanford | 38 | Wife | — | Massachusetts |
| 10 | William Morse | 79 | Head | — | Massachusetts |
| 11 | Annie Morse | 80 | Wife | — | Massachusetts |
| 12 | Charles Morse | 43 | Son | Electrician | Massachusetts |
| 13 | Mary Tracy | 50 | Daughter | — | Massachusetts |
| 14 | Thomas Tracy | 23 | Grandson | Clerical | Massachusetts |
| 15 | William Tracy | 22 | Grandson | Shipper | Massachusetts |
| 16 | John Blake | 51 | Head | Millman | Eire |
| 17 | Norma Blake | 51 | Wife | — | Eire |
| 18 | Mary Blake | 19 | Daughter | New Worker | Massachusetts |
| 19 | James Blake THIS PERSON | 17 | Son | — | Massachusetts |
| 20 | John Blake | 16 | Son | — | Massachusetts |
| 21 | Catherine Blake | 15 | Daughter | — | Massachusetts |
| 22 | Daniel Blake | 13 | Son | — | Massachusetts |
| 23 | Alice Leggat | 85 | Head | — | Scotland |
| 24 | Helen Walker | 60 | Daughter | — | New York |
| 25 | William Walker | 33 | Grandson | Foreman | Massachusetts |
| 26 | James Hurst | 34 | Head | Clerical | Massachusetts |
| 27 | Mary Hurst | 23 | Wife | — | Massachusetts |
| 28 | James Jr. Hurst | 1 | Son | — | Massachusetts |
| 29 | Julia Mcdonough | 67 | Head | — | Eire |
| 30 | John Mcdonough | 37 | Son | Policeman | Massachusetts |
| 31 | Margaret Mcdonough | 34 | Daughter | — | Massachusetts |
| 32 | Joseph Mcdonough | 9 | Grandson | — | Massachusetts |
| 33 | Thomas J. Carroll | 38 | Head | Electric Car Operator | Massachusetts |
| 34 | Gertrude Carroll | 27 | Wife | — | New York |
| 35 | Loretta Carroll | 2 | Daughter | — | Massachusetts |
| 36 | Mary Shea | 66 | Head | — | Eire |
| 37 | Mary E. Shea | 39 | Daughter | Stitcher Machine Operator | Massachusetts |
| 38 | Margaret Shea | 35 | Daughter | Telephone Operator | Massachusetts |
| 39 | John Shea | 33 | Son | Laborer | Massachusetts |
| 40 | James Shea | 30 | Son | Truck Driver | 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)