HK
Helen Kennedy — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Helen Kennedy across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a spouse (b.~1912), then head of a 4-person household.
Age 28
b. ~1912
Female
Spouse
Born: Massachusetts
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Kennedy |
| Given Name | Helen O. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Somerville |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Industry | 0 |
| Class of Worker | No |
| Highest Grade | H-1 |
| 1935 Residence | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Arlington Town Of |
| Est. Birth Year | ~1912 |
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.
4 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Helen | Age | Birth yr |
|---|---|---|---|---|
| Helen Kennedy | Spouse | — | 28 | ~1912 |
| Martin Kennedy | Head | — | 31 | ~1909 |
| Martin Kennedy | Son | — | ~1940 | |
| Janet Kennedy | Daughter | — | 1 | ~1939 |
Census Appearances
1920
Middlesex, Massachusetts
Other, age 8
Middlesex, Massachusetts · implied b. ~1912 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kennedy |
| Given Name | Helen |
| Relationship to Head | Granddaughter |
| Sex | F |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Ireland |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Other, age 18
Middlesex, Massachusetts · implied b. ~1912 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kennedy |
| Given Name | Helen M. |
| Relationship to Head | Boarder |
| Sex | F |
| Color / Race | White |
| Age | 18 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Filing Clerk |
| Industry | Post Card Printer |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Spouse, age 28
Middlesex-County, Massachusetts · implied b. ~1912 — 4 household members
| Surname | Kennedy |
| Given Name | Helen O. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Somerville |
| 1935 Residence (County) | Middlesex |
| Industry | 0 |
| Class of Worker | No |
| Highest Grade | H-1 |
| 1935 Residence | Massachusetts |
| 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 Helen Kennedy across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Helen Kennedy
Spouse · 1940 · age 28 · b. ~1912 · Massachusetts
★ You are viewing this record
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-t0627-01601-00580)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Anne M. Rawson | 4 | Daughter | — | Massachusetts |
| 42 | Gail T. Rawson | 2 | Daughter | — | Massachusetts |
| 43 | Oscar B. Malm | 59 | Head | Tool Maker | Sweden |
| 44 | Vera Malm | 51 | Wife | — | Sweden |
| 45 | Martin J. Kennedy | 31 | Head | Salesman | Massachusetts |
| 46 | Helen O. Kennedy THIS PERSON | 28 | Wife | — | Massachusetts |
| 47 | Janet E. Kennedy | 1 | Daughter | No | Massachusetts |
| 48 | Martin J. Kennedy | 0 | Son | No | Massachusetts |
| 49 | John W. Costine | 29 | Head | Truck Driver | Massachusetts |
| 50 | Ruth E. Costine | 27 | Wife | — | Massachusetts |
| 51 | Mary A. Costine | 65 | Mother | — | Canada-English |
| 52 | Lawson L. Smith | 50 | Head | Wool Sorter | England |
| 53 | Mabel H. Smith | 51 | Wife | — | Massachusetts |
| 54 | John C. Stafford | 60 | Head | Proprietor | Canada-English |
| 55 | Mary A. Stafford | 58 | Wife | — | Massachusetts |
| 56 | John E. Jr. Stafford | 33 | Head | Salesman | Massachusetts |
| 57 | Irene A. Stafford | 33 | Wife | — | Massachusetts |
| 58 | Barbara L. Stafford | 10 | Daughter | — | Massachusetts |
| 59 | James H. Cheyne | 68 | Father-in-law | — | Scotland |
| 60 | John Depoian | 58 | Head | Clergyman | Turkey |
| 61 | Marija J. M. Depoian | 45 | Wife | Church Worker | Turkey |
| 62 | Serge S. Najarian | 43 | Head | Supervisory Clerk | Turkey |
| 63 | Agnes Najarian | 34 | Wife | — | Rhode Island |
| 64 | Helen K. Najarian | 11 | Daughter | — | Massachusetts |
| 65 | Irene M. Najarian | 4 | Daughter | — | Massachusetts |
| 66 | Philip L. Chamberlain | 38 | Head | Posting Clerk | Massachusetts |
| 67 | Marion P. Chamberlain | 37 | Wife | — | Massachusetts |
| 68 | Mary F. Sinclair | 70 | Head | — | Canada-English |
| 69 | Lucille W. Sinclair | 36 | Daughter | Civil Make-Up Editor | Massachusetts |
| 70 | William J. Mckeever | 42 | Head | Service Station Attendant | Massachusetts |
| 71 | Anna M. Mckeever | 42 | Wife | — | Massachusetts |
| 72 | Anne M. Mckeever | 8 | Daughter | — | Massachusetts |
| 73 | Cecil O. London | 39 | Head | Stationary Engineer | Canada-English |
| 74 | Edith P. London | 39 | Wife | — | Canada-English |
| 75 | Verna M. London | 11 | Daughter | — | Massachusetts |
| 76 | Charles F. London | 4 | Son | No | Massachusetts |
| 77 | Mary A. Biddlescomb | 79 | Mother-in-law | — | Canada-English |
| 78 | John P. Finnegan | 37 | Head | Pressman | Massachusetts |
| 79 | Margaret T. Finnegan | 38 | Wife | — | Massachusetts |
| 80 | John P. Jr. Finnegan | 9 | Son | — | 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)