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Charles Cox — 1940 US Census Record
Model Tree available1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Charles Cox across the 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Joseph & Mary — first a head (b.~1901), then head of a 4-person household.
Age 39
b. ~1901
Male
Head
Born: Massachusetts
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Cox |
| Given Name | Charles |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Somerville City |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | salesman |
| Industry | Wholesale grocery Co. |
| Class of Worker | PW |
| Hours Worked | 45 |
| Income (1939) | 1500 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Salesman |
| Township / Ward | Somerville City |
| Est. Birth Year | ~1901 |
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 Charles | Age | Birth yr |
|---|---|---|---|---|
| Mary Cox | Daughter | — | 10 | ~1930 |
| Dorothea Cox | Daughter | — | 5 | ~1935 |
| Charles Cox | Head | — | 39 | ~1901 |
| Eleanor Cox | Spouse | — | 21 | ~1919 |
Census Appearances
1920
Middlesex, Massachusetts
Son, age 19
Middlesex, Massachusetts · implied b. ~1901 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cox |
| Given Name | Charles S |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Printer |
| Industry | Butter Co |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Head, age 29
Middlesex, Massachusetts · implied b. ~1901 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cox |
| Given Name | Charles S. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| Age at First Marriage | 27 |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Salesman |
| Industry | Poultry House |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 36 |
| Radio Set | No |
| Veteran | No |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Head, age 39
Middlesex-County, Massachusetts · implied b. ~1901 — 4 household members
| Surname | Cox |
| Given Name | Charles |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Somerville City |
| 1935 Residence (County) | Middlesex |
| Occupation | salesman |
| Industry | Wholesale grocery Co. |
| Class of Worker | PW |
| Hours Worked | 45 |
| Income (1939) | 1500 |
| Highest Grade | 8 |
| 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 Charles Cox across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Joseph Cox (~0.92 confidence) and mother Mary Cox (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Joseph Cox
b. ~1879
Source father
● Household
· direct · ~0.92
Mother
Mary Cox
b. ~1880
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Charles Cox
Head · 1940 · age 39 · b. ~1901 · 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-t0627-01704-00243)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Marsha Beale | 10 | Daughter | — | Massachusetts |
| 42 | Elizabeth Thompson | 72 | Mother | — | England |
| 43 | John Hourihan | 41 | Head | Shipper | Massachusetts |
| 44 | Margaret Hourihan | 40 | Wife | — | Massachusetts |
| 45 | Margaret Hourihan | 14 | Daughter | — | Massachusetts |
| 46 | John Hourihan | 10 | Son | — | Massachusetts |
| 47 | Elizabeth Hourihan | 5 | Daughter | — | Massachusetts |
| 48 | Mary Hourihan | 49 | Sister | Teller | Massachusetts |
| 49 | Christine Hourihan | 48 | Sister | — | Massachusetts |
| 50 | John Mccarthy | 61 | Head | Manager | Massachusetts |
| 51 | Nellie Mccarthy | 60 | Wife | — | Italy |
| 52 | Charles Cox THIS PERSON | 39 | Head | Salesman | Massachusetts |
| 53 | Eleanor Cox | 21 | Wife | — | Massachusetts |
| 54 | Mary Cox | 10 | Daughter | — | Massachusetts |
| 55 | Dorothea Cox | 5 | Daughter | — | Massachusetts |
| 56 | George Merchant | 45 | Head | Mechanic | Massachusetts |
| 57 | Laura Merchant | 48 | Wife | — | Massachusetts |
| 58 | Doris Merchant | 18 | Daughter | — | Massachusetts |
| 59 | Agnette Merchant | 17 | Daughter | — | Massachusetts |
| 60 | Lorraine Merchant | 9 | Daughter | — | Massachusetts |
| 61 | Cornelius Bagley | 41 | Head | Police Officer | Massachusetts |
| 62 | Mary Bagley | 36 | Wife | — | Canada English |
| 63 | Cornelius Bagley | 12 | Son | — | Massachusetts |
| 64 | Teresa Bagley | 4 | Daughter | — | Massachusetts |
| 65 | Ella Rand | 51 | Head | — | Massachusetts |
| 66 | Warren Rand | 22 | Son | Electric Welder | Massachusetts |
| 67 | Edith Rand | 18 | Daughter | — | Massachusetts |
| 68 | Robert Earle | 36 | Head | Shipper | Massachusetts |
| 69 | Carrie Earle | 30 | Wife | — | New Hampshire |
| 70 | Parker Keith | 47 | Head | Acoustical Worker | Massachusetts |
| 71 | Ella Keith | 47 | Wife | — | Massachusetts |
| 72 | John Benson | 34 | Head | Boat Builder | Canada English |
| 73 | Harriet Benson | 31 | Wife | — | Canada English |
| 74 | Barbara Benson | 7 | Daughter | — | Massachusetts |
| 75 | Reginald Benson | 61 | Father | Boat Builder | Canada English |
| 76 | Paul Berry | 29 | Head | Laborer | Massachusetts |
| 77 | Dorothy Berry | 29 | Wife | — | Massachusetts |
| 78 | Claire Berry | 3 | Daughter | — | Massachusetts |
| 79 | Fred Johnson | 36 | Head | Gas Station Attendant | Massachusetts |
| 80 | Margaret Johnson | 32 | Wife | — | Massachusetts |
Pedigree Summary
Charles
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)