WC
William Cobb — 1940 US Census Record
Model Tree available1940 United States Federal Census · Norfolk-County, Massachusetts
Our Model Tree links this William Cobb across the 1920, 1930 and 1940 US Censuses in Norfolk-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Wallace & Helen — first a head (b.~1909), then head of a 4-person household.
Age 31
b. ~1909
Male
Head
Born: Massachusetts
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Norfolk-County, Massachusetts |
| Surname | Cobb |
| Given Name | William E. |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Occupation | Artist |
| Industry | Greeting Cards |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 100 |
| Highest Grade | H 2 |
| 1935 Residence | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Artist |
| Township / Ward | Brookline Town |
| Est. Birth Year | ~1909 |
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 William | Age | Birth yr |
|---|---|---|---|---|
| Elizabeth Cobb | Spouse | — | 26 | ~1914 |
| William Cobb | Son | — | 3 | ~1937 |
| William Cobb | Head | — | 31 | ~1909 |
| Ella Cobb | Other | — | 60 | ~1880 |
Census Appearances
1920
Norfolk, Massachusetts
Son, age 12
Norfolk, Massachusetts · implied b. ~1908 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cobb |
| Given Name | William E |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Norfolk, Massachusetts
Son, age 22
Norfolk, Massachusetts · implied b. ~1908 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cobb |
| Given Name | William E. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Florist |
| Industry | Florist |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Norfolk-County, Massachusetts
Head, age 31
Norfolk-County, Massachusetts · implied b. ~1909 — 4 household members
| Surname | Cobb |
| Given Name | William E. |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Occupation | Artist |
| Industry | Greeting Cards |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 100 |
| Highest Grade | H 2 |
| 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 William Cobb across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Wallace Cobb (~0.92 confidence) and mother Helen Cobb (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Wallace Cobb
b. ~1871
Source father
● Household
· direct · ~0.92
Mother
Helen Cobb
b. ~1877
Source mother
● Household
· direct · ~0.92
This person
Anchor record
William Cobb
Head · 1940 · age 31 · b. ~1909 · 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 — Norfolk-County, Massachusetts
Open full size
1940 US Federal Census — Norfolk-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01625-00598)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Eva Brate | 51 | wife | — | Russia |
| 2 | Jack Brate | 36 | son | Shipping Clerk | Massachusetts |
| 3 | Russell S. Hoke | 43 | head | Book Publisher | Pennsylvania |
| 4 | Anna S. Hoke | 43 | wife | Secretary | Massachusetts |
| 5 | Bertha K. Hoke | 76 | mother | — | Pennsylvania |
| 6 | John W. Perkins | 50 | head | Latin Teacher | Massachusetts |
| 7 | Vera S. Perkins | 45 | sister | — | Massachusetts |
| 8 | Mary C. Scott | 70 | head | Domestic | Scotland |
| 9 | Margery K. Emery | 24 | grand daughter | Artist | Massachusetts |
| 10 | Marion Emery | 20 | grand daughter | Sales Girl | Massachusetts |
| 11 | E. E. Maccourt | 35 | head | Salesman | Massachusetts |
| 12 | Constance Maccourt | 36 | wife | — | Massachusetts |
| 13 | Albert Edward Hubbert | 36 | head | Superintendent | Illinois |
| 14 | Frances Margaret Hubbert | 28 | wife | — | Massachusetts |
| 15 | Albert Edward Jr. Hubbert | 0 | son | — | Massachusetts |
| 16 | John S. Black | 16 | brother in law | — | Massachusetts |
| 17 | William S. Kenney | 56 | head | Lawyer | Massachusetts |
| 18 | Barbara Kenney | 15 | daughter | — | Massachusetts |
| 19 | William S. Jr. Kenney | 13 | son | — | Massachusetts |
| 20 | Isabell Caddare | 37 | housekeeper | Housekeeper | Massachusetts |
| 21 | Thomas H. Russell | 65 | head | Lawyer | Massachusetts |
| 22 | Fanny Baxter | 64 | housekeeper | Housekeeper | Massachusetts |
| 23 | William E. Cobb THIS PERSON | 31 | head | Artist | Massachusetts |
| 24 | Elizabeth S. Cobb | 26 | wife | — | Pennsylvania |
| 25 | William E. Cobb | 3 | son | — | Massachusetts |
| 26 | Ella Cobb | 60 | mother | File Clerk | Massachusetts |
| 27 | John Walker | 83 | head | — | Massachusetts |
| 28 | Abby A. Walker | 80 | wife | — | Maine |
| 29 | Anna C. Hoyt | 35 | niece | File Clerk | Massachusetts |
| 30 | Henry N. Davis | 46 | head | Lawyer | Massachusetts |
| 31 | Ethel Davis | 49 | wife | — | Poland |
| 32 | Blanche Davis | 19 | daughter | — | Massachusetts |
| 33 | Constance Davis | 16 | daughter | — | Massachusetts |
| 34 | Mary Flynn | 68 | head | — | Irish Free State |
| 35 | Mary Corbett | 69 | lodger | — | Irish Free State |
| 36 | Sarah Kelley | 63 | lodger | Housekeeper | Irish Free State |
| 37 | Louis Garland | 43 | head | Mechanic | New Hampshire |
| 38 | Elva Garland | 46 | wife | — | Massachusetts |
| 39 | Cynthia Garland | 24 | daughter | Secretary | New Hampshire |
| 40 | Eleanor Garland | 18 | daughter | Typist | New Hampshire |
Pedigree Summary
William
Gen 1 · 2 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)