DC
David Cohen — 1940 US Census Record
Model Tree available1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this David Cohen across the 1920, 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Isaac & Ida — first a son (b.~1910), then head of a 5-person household.
Age 30
b. ~1910
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Cohen |
| Given Name | David |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Occupation | Lawyer |
| Industry | Private Practice |
| Class of Worker | OA |
| Hours Worked | 38 |
| Income (1939) | 1000 |
| Highest Grade | C 4 |
| 1935 Residence | Same Place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Lawyer |
| Township / Ward | Boston |
| Est. Birth Year | ~1910 |
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 David | Age | Birth yr |
|---|---|---|---|---|
| Ethel Cohen | Daughter | — | 27 | ~1913 |
| Max Cohen | Son | — | 28 | ~1912 |
| David Cohen | Son | — | 30 | ~1910 |
| Lena Cohen | Daughter | — | 19 | ~1921 |
| Ida Cohen | Head | — | 55 | ~1885 |
Census Appearances
1920
Suffolk, Massachusetts
Son, age 8
Suffolk, Massachusetts · implied b. ~1912 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cohen |
| Given Name | David |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 8 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Russia |
| Mother's Birthplace | Russia |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Hebrew |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Suffolk, Massachusetts
Son, age 19
Suffolk, Massachusetts · implied b. ~1911 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cohen |
| Given Name | David |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Russia |
| Mother's Birthplace | Russia |
| Occupation | Clerk |
| Industry | Retail Fruit |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Son, age 30
Suffolk-County, Massachusetts · implied b. ~1910 — 5 household members
| Surname | Cohen |
| Given Name | David |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 30 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Occupation | Lawyer |
| Industry | Private Practice |
| Class of Worker | OA |
| Hours Worked | 38 |
| Income (1939) | 1000 |
| Highest Grade | C 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 David Cohen across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Isaac Cohen (~0.92 confidence) and mother Ida Cohen (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Isaac Cohen
b. ~1881
Source father
● Household
· direct · ~0.92
Mother
Ida Cohen
b. ~1885
Source mother
● Household
· direct · ~0.92
This person
Anchor record
David Cohen
Son · 1940 · age 30 · b. ~1910 · Massachusetts
★ You are viewing this record
Sibling
Lena Cohen
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Max Cohen
Sibling · 1940 · age 28
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ethel Cohen
Sibling · 1940 · age 27
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 — Suffolk-County, Massachusetts
Open full size
1940 US Federal Census — Suffolk-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01670-01008)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Samuel Zarkin | 64 | Head | Superintendent | Russia |
| 42 | Fanny Zarkin | 62 | Wife | — | Russia |
| 43 | Evelyn Zarkin | 24 | Daughter | Bookkeeper | Massachusetts |
| 44 | Ruby Schaffer | 40 | Boarder | Tailor | Massachusetts |
| 45 | Sally Schaffer | 20 | Boarder | — | Massachusetts |
| 46 | Ida Cohen | 55 | Head | — | Russia |
| 47 | David Cohen THIS PERSON | 30 | Son | Lawyer | Massachusetts |
| 48 | Max Cohen | 28 | Son | Salesman | Massachusetts |
| 49 | Ethel Cohen | 27 | Daughter | — | Massachusetts |
| 50 | Lena Cohen | 19 | Daughter | — | Massachusetts |
| 51 | Louis Arvedon | 61 | Head | Merchant | Russia |
| 52 | Kate Arvedon | 56 | Wife | — | Russia |
| 53 | Arthur Arvedon | 26 | Son | Clerk | Massachusetts |
| 54 | Jessie Arvedon | 21 | Daughter | — | Massachusetts |
| 55 | Bernice Arvedon | 18 | Daughter | — | Massachusetts |
| 56 | Israel Turner | 48 | Head | Salesman | Russia |
| 57 | Rebecca Turner | 46 | Wife | — | Russia |
| 58 | Edward Turner | 21 | Son | — | Massachusetts |
| 59 | Philip Turner | 18 | Son | — | Massachusetts |
| 60 | Marjorie Turner | 8 | Daughter | — | Massachusetts |
| 61 | Anna Gladstein | 35 | Sister-in-law | Seamstress | Russia |
| 62 | Rose Gladstein | 28 | Sister-in-law | Finisher | Russia |
| 63 | Leo Albert | 48 | Head | Salesman | Massachusetts |
| 64 | Fanny Albert | 45 | Wife | — | Massachusetts |
| 65 | Eleanor Albert | 21 | Daughter | Clerk | Massachusetts |
| 66 | Shirley Albert | 13 | Daughter | — | Massachusetts |
| 67 | Lena Horn | 75 | Mother-in-law | — | Russia |
| 68 | Milton Glickman | 34 | Head | Salesman | Massachusetts |
| 69 | Pauline Glickman | 34 | Wife | — | Massachusetts |
| 70 | Alden Glickman | 8 | Son | — | Massachusetts |
| 71 | Ruth Speigel | 53 | Mother-in-law | — | Russia |
| 72 | Ethel Speigel | 26 | Sister-in-law | Typist | Massachusetts |
| 73 | Sheila Speigel | 24 | Sister-in-law | Bookkeeper | Massachusetts |
| 74 | Harry Shapiro | 45 | Head | Druggist | Russia |
| 75 | Eva Shapiro | 45 | Wife | — | Massachusetts |
| 76 | Manuel Shapiro | 18 | Son | — | Massachusetts |
| 77 | Sumner Shapiro | 13 | Son | — | Massachusetts |
| 78 | Norman Shapiro | 9 | Son | — | Massachusetts |
| 79 | Albert Frankel | 31 | Head | Furrier | Massachusetts |
| 80 | Jean Frankel | 30 | Wife | — | Massachusetts |
Pedigree Summary
David + 3 siblings
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)