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James Whalen — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this James Whalen across the 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1920), then head of a 8-person household.
Age 20
b. ~1920
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Whalen |
| Given Name | James |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Natick |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | Chain store |
| Industry | PW |
| Class of Worker | 220 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Chain Store |
| Township / Ward | Natick |
| Est. Birth Year | ~1920 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to James | Age | Birth yr |
|---|---|---|---|---|
| James Whalen | Son | — | 20 | ~1920 |
| Cathryn Whalen | Spouse | — | 45 | ~1895 |
| William Whalen | Head | — | 52 | ~1888 |
| William Whalen | Son | — | 25 | ~1915 |
| Richard Whalen | Son | — | 22 | ~1918 |
| Charles Holmquist | Other | — | 32 | ~1908 |
| Francis Whalen | Son | — | 24 | ~1916 |
| Cathryn Whalen | Other | — | 79 | ~1861 |
Census Appearances
1930
Middlesex, Massachusetts
Son, age 9
Middlesex, Massachusetts · implied b. ~1921 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Whalen |
| Given Name | James |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| 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 20
Middlesex-County, Massachusetts · implied b. ~1920 — 8 household members
| Surname | Whalen |
| Given Name | James |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Natick |
| 1935 Residence (County) | Middlesex |
| Occupation | Chain store |
| Industry | PW |
| Class of Worker | 220 |
| Highest Grade | Hs 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 Whalen across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
James Whalen
Son · 1940 · age 20 · b. ~1920 · Massachusetts
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Sibling
William Whalen
Sibling · 1940 · age 25
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Whalen
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Richard Whalen
Sibling · 1940 · age 22
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-t0627-01613-00811)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Harold Gray | 38 | Head | Agent | Massachusetts |
| 42 | Effie Gray | 34 | Wife | — | Massachusetts |
| 43 | Evelyn Gray | 4 | daughter | — | Massachusetts |
| 44 | Selena S. Adams | 40 | Head | House Work | New York |
| 45 | Alice Adams | 20 | daughter | Secretary | Massachusetts |
| 46 | Virginia Adams | 18 | daughter | — | Massachusetts |
| 47 | Fred Adams | 16 | son | — | Massachusetts |
| 48 | Selena R. Breen | 65 | mother | Hospital | New York |
| 49 | John Breen | 25 | brother | Insurance Co | Massachusetts |
| 50 | William H. O'Connell | 42 | Head | Hotel Business | Massachusetts |
| 51 | Anna O'Connell | 33 | Wife | — | Pennsylvania |
| 52 | William H. O'Connell | 9 | son | — | Massachusetts |
| 53 | Barbara A. O'Connell | 7 | daughter | — | Massachusetts |
| 54 | Robert O'Connell | 1 | son | — | Massachusetts |
| 55 | Thomas Halpin | 51 | Head | Chief Clerk | Massachusetts |
| 56 | Frances M. Halpin | 51 | Wife | — | Massachusetts |
| 57 | Francis Halpin | 24 | daughter | School Teacher | Massachusetts |
| 58 | Geneva Halpin | 21 | daughter | Paper Co | Massachusetts |
| 59 | Thomas J. Halpin | 18 | son | — | Massachusetts |
| 60 | Mary Halpin | 14 | daughter | — | Massachusetts |
| 61 | Marguerite Halpin | 14 | daughter | — | Massachusetts |
| 62 | William Whalen | 52 | Head | Labor | Massachusetts |
| 63 | Cathryn S. Whalen | 45 | Wife | — | Massachusetts |
| 64 | William E. Whalen | 25 | son | Gardner | Massachusetts |
| 65 | Francis J. Whalen | 24 | son | Clerk | Massachusetts |
| 66 | Richard Whalen | 22 | son | Shipper | Massachusetts |
| 67 | James Whalen THIS PERSON | 20 | son | Chain Store | Massachusetts |
| 68 | Cathryn Whalen | 79 | mother | — | Ireland |
| 69 | Charles Holmquist | 32 | lodger | Gardner | Massachusetts |
| 70 | Lewis Clancey | 20 | Head | Laborer | Massachusetts |
| 71 | Arlene Clancey | 20 | Wife | — | Massachusetts |
| 72 | Robert Clancey | 2 | son | — | Massachusetts |
| 73 | Joanne Clancey | 0 | daughter | — | Massachusetts |
| 74 | Guy Moutray | 44 | Head | Stationary Eng | Virginia |
| 75 | Rose Moutray | 46 | Wife | Dress Factory | Massachusetts |
| 76 | George Moutray | 16 | son | — | Massachusetts |
| 77 | Joseph Harrington | 47 | Head | Editorial Writer | Massachusetts |
| 78 | Ann Harrington | 41 | Wife | — | Nova Scotia |
| 79 | Joseph Harrington | 19 | son | — | Massachusetts |
| 80 | Mary Ann Harrington | 4 | 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)