WC
William Cannon — 1940 US Census Record
Model Tree available1940 United States Federal Census · Essex-County, Massachusetts
Our Model Tree links this William Cannon across the 1920, 1930 and 1940 US Censuses in Essex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents John & Mary — first a son (b.~1915), then head of a 5-person household.
Age 25
b. ~1915
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Essex-County, Massachusetts |
| Surname | Cannon |
| Given Name | William A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Lawrence City |
| 1935 Residence (County) | Essex |
| Additional Details | |
| Occupation | Laborer |
| Industry | City of Lawrence |
| Class of Worker | GW |
| Hours Worked | 52 |
| Income (1939) | 150 |
| Highest Grade | H 4 |
| 1935 Residence | Same house |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Laborer |
| Township / Ward | Lawrence City |
| Est. Birth Year | ~1915 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to William | Age | Birth yr |
|---|---|---|---|---|
| Dorothy Cannon | Daughter | — | 27 | ~1913 |
| Mary Cannon | Head | — | 58 | ~1882 |
| Helen Cannon | Daughter | — | 23 | ~1917 |
| William Cannon | Son | — | 25 | ~1915 |
| John Cannon | Son | — | 17 | ~1923 |
Census Appearances
1920
Essex, Massachusetts
Son, age 5
Essex, Massachusetts · implied b. ~1915 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cannon |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | New York |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Essex, Massachusetts
Son, age 16
Essex, Massachusetts · implied b. ~1914 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cannon |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | New York |
| Mother's Birthplace | Massachusetts |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Essex-County, Massachusetts
Son, age 25
Essex-County, Massachusetts · implied b. ~1915 — 5 household members
| Surname | Cannon |
| Given Name | William A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 25 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Lawrence City |
| 1935 Residence (County) | Essex |
| Occupation | Laborer |
| Industry | City of Lawrence |
| Class of Worker | GW |
| Hours Worked | 52 |
| Income (1939) | 150 |
| Highest Grade | H 4 |
| 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 William Cannon across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Cannon (~0.92 confidence) and mother Mary Cannon (~0.92 confidence) and mother Mary Cannon (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Cannon
b. ~1883
Source father
● Household
· direct · ~0.92
Mother
Mary Cannon
b. ~1884
Source mother
● Household
· direct · ~0.92
Mother
Mary Cannon
b. ~1882
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Cannon
Son · 1940 · age 25 · b. ~1915 · Massachusetts
★ You are viewing this record
Sibling
John Cannon
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Cannon
Sibling · 1940 · age 27
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Cannon
Sibling · 1940 · age 23
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 — Essex-County, Massachusetts
Open full size
1940 US Federal Census — Essex-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01583-00759)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | John J. Dineen | 58 | Head | Police Officer | Massachusetts |
| 2 | Theresa Dineen | 46 | Wife | — | Massachusetts |
| 3 | Joseph P. Oakes | 13 | Step-son | — | Massachusetts |
| 4 | Edward Kommin | 36 | Head | Section Hand | Massachusetts |
| 5 | Bertha Kommin | 34 | Wife | Mender | Massachusetts |
| 6 | Ronald Kommin | 13 | Son | — | Massachusetts |
| 7 | Richard Kommin | 11 | Son | — | Massachusetts |
| 8 | Lorraine Kommin | 9 | Daughter | — | Massachusetts |
| 9 | Frederick E. Nelson | 49 | Head | Comb Fixer | Canada-French |
| 10 | Aldea Nelson | 45 | Wife | — | Massachusetts |
| 11 | August Lavoie | 65 | Head | Janitor | Canada-French |
| 12 | Maria Lavoie | 64 | Wife | — | Canada-French |
| 13 | John F. O'Brien | 42 | Son | Engineer | Massachusetts |
| 14 | Regina O'Brien | 41 | Daughter-in-law | — | Massachusetts |
| 15 | Mary Cannon | 58 | Head | — | Massachusetts |
| 16 | Dorothy M. Cannon | 27 | Daughter | Propit | Massachusetts |
| 17 | William A. Cannon THIS PERSON | 25 | Son | Laborer | Massachusetts |
| 18 | Helen J. Cannon | 23 | Daughter | Store Clerk | Massachusetts |
| 19 | John F. Cannon | 17 | Son | — | Massachusetts |
| 20 | Arthur E. Molloy | 55 | Head | Spinner | Massachusetts |
| 21 | Catherine R. Molloy | 55 | Wife | — | Massachusetts |
| 22 | Arlene Molloy | 4 | Daughter | — | Massachusetts |
| 23 | Anita F. Johnson | 46 | Head | French Drawing | Rhode Island |
| 24 | Howard Johnson | 1 | Son | — | Massachusetts |
| 25 | Delia Fontaine | 65 | Mother | — | Rhode Island |
| 26 | Raymond Fontaine | 12 | Nephew | — | Massachusetts |
| 27 | Frank Charbonneau | 74 | Head | Painter | Vermont |
| 28 | Elizabeth Charbonneau | 68 | Wife | — | Vermont |
| 29 | Fannie Lightowler | 47 | Pupa | Housekeeper | England |
| 30 | William Gillan | 52 | Head | Cabinet Maker | Scotland |
| 31 | Mary Gillan | 42 | Wife | — | Vermont |
| 32 | Francis Gillan | 20 | Son | Painter | Massachusetts |
| 33 | Gladys Gillan | 18 | Daughter | Housework | Massachusetts |
| 34 | Louise Gillan | 18 | Daughter | — | Massachusetts |
| 35 | James Gillan | 17 | Son | — | Massachusetts |
| 36 | Robert Gillan | 5 | Son | — | Massachusetts |
| 37 | Robert Thello | 48 | Head | Painter | Virginia |
| 38 | Nora Thello | 46 | Wife | French Drawing | Vermont |
| 39 | Joseph A. Davies | 30 | Head | Dyer | Maine |
| 40 | Mary A. Davies | 26 | Wife | — | Massachusetts |
Pedigree Summary
William + 3 siblings
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
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)