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John Whalen — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this John Whalen across the 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1924), then head of a 8-person household.
Age 16
b. ~1924
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Whalen |
| Given Name | John F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Lexington |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Hours Worked | 0 |
| Highest Grade | Hs 1 |
| 1935 Residence | Same house |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Lexington |
| 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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Mary Whalen | Daughter | — | 7 | ~1933 |
| John Whalen | Son | — | 16 | ~1924 |
| Rita Whalen | Daughter | — | 3 | ~1937 |
| John Whalen | Head | — | 49 | ~1891 |
| Marjorie Murphy | Other | — | 21 | ~1919 |
| Patricia Whalen | Daughter | — | 10 | ~1930 |
| Loretta Whalen | Spouse | — | 43 | ~1897 |
| Charles Whalen | Son | — | 14 | ~1926 |
Census Appearances
1930
Middlesex, Massachusetts
Son, age 5
Middlesex, Massachusetts · implied b. ~1925 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Whalen |
| Given Name | John F |
| 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 — 8 household members
| Surname | Whalen |
| Given Name | John F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Lexington |
| 1935 Residence (County) | Middlesex |
| Hours Worked | 0 |
| Highest Grade | Hs 1 |
| 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 John Whalen across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Whalen
Son · 1940 · age 16 · b. ~1924 · Massachusetts
★ You are viewing this record
Sibling
Mary Whalen
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patricia Whalen
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Rita Whalen
Sibling · 1940 · age 3
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Whalen
Sibling · 1940 · age 14
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-t0627-01607-00634)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | John L. A. Patch | 23 | Son | New Worker | Massachusetts |
| 42 | Claire Walker | 50 | Servant | Maid | New Hampshire |
| 43 | Charles G. Davis | 31 | Head | Engineer | Alabama |
| 44 | Ruth H. Davis | 30 | Wife | — | Massachusetts |
| 45 | Chas. G. Jr. Davis | 7 | Son | — | Massachusetts |
| 46 | Chester S. Davis | 5 | Son | — | Massachusetts |
| 47 | Arthur J. Tellier | 50 | Head | Sales | Massachusetts |
| 48 | Agnes E. Tellier | 46 | Wife | — | Massachusetts |
| 49 | Albert R. De Roche | 65 | Head | Sales | New Hampshire |
| 50 | Linnie H. De Roche | 48 | Wife | — | Massachusetts |
| 51 | Pauline Winckenbach | 18 | Lodger | Hairdresser | Maine |
| 52 | Marion Marston | 35 | Lodger | Teacher | Maine |
| 53 | Charles P. Bragg | 77 | Head | — | Massachusetts |
| 54 | Gertrude Bragg | 69 | Wife | — | Massachusetts |
| 55 | Russell Bragg | 45 | Son | — | Massachusetts |
| 56 | Warren Barter | 38 | Servant | Servant | Massachusetts |
| 57 | Pearl Barter | 44 | Servant | Servant | Massachusetts |
| 58 | Robert J. Pierson | 33 | Head | Salesman | New York |
| 59 | Barbara C. Pierson | 31 | Wife | — | Massachusetts |
| 60 | Robert J. Jr. Pierson | 5 | Son | — | Massachusetts |
| 61 | John P. Whalen | 49 | Head | Dealer | Massachusetts |
| 62 | Loretta B. Whalen | 43 | Wife | — | Massachusetts |
| 63 | John F. Whalen THIS PERSON | 16 | Son | — | Massachusetts |
| 64 | Charles Whalen | 14 | Son | — | Massachusetts |
| 65 | Patricia Whalen | 10 | Daughter | — | Massachusetts |
| 66 | Mary Whalen | 7 | Daughter | — | Massachusetts |
| 67 | Rita Whalen | 3 | Daughter | — | Massachusetts |
| 68 | Marjorie Murphy | 21 | Servant | Maid | Massachusetts |
| 69 | William J. Hyde | 60 | Head | C.P.A. | Massachusetts |
| 70 | Mary B. Hyde | 56 | Wife | — | Massachusetts |
| 71 | Robert J. Hyde | 25 | Son | Clerk-Purchaser | Massachusetts |
| 72 | Ernest C. Martin | 59 | Head | Druggist | Massachusetts |
| 73 | Elizabeth W. Martin | 59 | Wife | — | Massachusetts |
| 74 | William E. Chamberlain | 59 | Head | — | Massachusetts |
| 75 | Bertha M. Chamberlain | 56 | Wife | — | Massachusetts |
| 76 | John D. Chamberlain | 18 | Son | — | Massachusetts |
| 77 | Lucy W. Chamberlain | 16 | Daughter | — | Massachusetts |
| 78 | Mabel P. Cook | 73 | Head | — | Massachusetts |
| 79 | Frank A. Ross | 25 | Lodger | Engineer | Massachusetts |
| 80 | Winifred Ross | 40 | Lodger | — | England |
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)