CC
Charles Carroll — 1940 US Census Record
Model Tree available1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Charles Carroll across the 1910, 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Cornelius & Margaret — first a head (b.~1909), then head of a 3-person household.
Age 31
b. ~1909
Male
Head
Born: Massachusetts
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Carroll |
| Given Name | Charles |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Medford City |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | Electrician |
| Industry | Edison Light |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 2100 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Electrician |
| Township / Ward | Medford City |
| 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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Charles | Age | Birth yr |
|---|---|---|---|---|
| John Carroll | Son | — | 10 | ~1930 |
| Charles Carroll | Head | — | 31 | ~1909 |
| Mary Carroll | Spouse | — | 30 | ~1910 |
Census Appearances
1910
Middlesex, Massachusetts
Son, age 1
Middlesex, Massachusetts · implied b. ~1909 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carroll |
| Given Name | Cornelius Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1920
Middlesex, Massachusetts
Son, age 10
Middlesex, Massachusetts · implied b. ~1910 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carroll |
| Given Name | Cornelius J Jr |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Ireland |
| Can Read | Yes |
| Can Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Son, age 20
Middlesex, Massachusetts · implied b. ~1910 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Carroll |
| Given Name | Cornelius J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Northern Ireland |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Head, age 31
Middlesex-County, Massachusetts · implied b. ~1909 — 3 household members
| Surname | Carroll |
| Given Name | Charles |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 31 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Medford City |
| 1935 Residence (County) | Middlesex |
| Occupation | Electrician |
| Industry | Edison Light |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 2100 |
| Highest Grade | H-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 Charles Carroll across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Cornelius Carroll (~0.92 confidence) and mother Margaret Carroll (~0.92 confidence) and mother Margaret Carroll (~0.92 confidence) and mother Margaret Carroll (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Cornelius Carroll
b. ~1879
Source father
● Household
· direct · ~0.92
Mother
Margaret Carroll
b. ~1881
Source mother
● Household
· direct · ~0.92
Mother
Margaret Carroll
b. ~1881
Source mother
● Household
· direct · ~0.92
Mother
Margaret Carroll
b. ~1883
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Charles Carroll
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 — 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-t0627-01611-00107)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | James Murray | 40 | Head | Cutter | Massachusetts |
| 2 | Gertrude Murray | 38 | Wife | — | Massachusetts |
| 3 | Virginia Murray | 14 | Daughter | — | Massachusetts |
| 4 | Richard Murray | 13 | Son | — | Massachusetts |
| 5 | George Murray | 7 | Son | — | Massachusetts |
| 6 | Vincent St. Sauveur | 26 | Head | Salesman | Massachusetts |
| 7 | Genevieve St. Sauveur | 22 | Wife | — | Massachusetts |
| 8 | Richard St. Sauveur | 0 | Son | — | Massachusetts |
| 9 | Philip Mclaughlin | 53 | Head | Inspector | Eire |
| 10 | Sarah Mclaughlin | 51 | Wife | — | Massachusetts |
| 11 | Bernard Mcdonald | 72 | Father-in-law | — | Eire |
| 12 | John J. Burns | 48 | Head | Fireman | Massachusetts |
| 13 | Mary Burns | 44 | Wife | — | Massachusetts |
| 14 | Helen Burns | 18 | Daughter | — | Massachusetts |
| 15 | Charles Carroll THIS PERSON | 31 | Head | Electrician | Massachusetts |
| 16 | Mary Carroll | 30 | Wife | — | Massachusetts |
| 17 | John Carroll | 10 | Son | — | Massachusetts |
| 18 | Albert Pusey | 28 | Head | New Eng. Bakery | Massachusetts |
| 19 | Stella Pusey | 21 | Wife | — | Massachusetts |
| 20 | Janet Pusey | 3 | Daughter | — | Massachusetts |
| 21 | William Hart | 25 | Head | Salesman | Massachusetts |
| 22 | Marion Hart | 23 | Wife | — | Massachusetts |
| 23 | Marion Hart | 3 | Daughter | — | Massachusetts |
| 24 | John Bellizzi | 62 | Head | Teamster | Italy |
| 25 | Josephine Bellizzi | 62 | Wife | — | Italy |
| 26 | Theodore Bellizzi | 25 | Son | Manager | Massachusetts |
| 27 | Edward Alwater | 35 | Head | — | England |
| 28 | Eleanor Alwater | 21 | Wife | — | Massachusetts |
| 29 | Cynthia Alwater | 4 | Daughter | — | Massachusetts |
| 30 | David Alwater | 1 | Son | — | Massachusetts |
| 31 | Carol Hodgkins | 50 | Head | Operator | Massachusetts |
| 32 | Mary Hodgkins | 50 | Wife | Model | Massachusetts |
| 33 | Alice Hodgkins | 25 | Daughter | New Worker | Massachusetts |
| 34 | William Hodgkins | 21 | Son | — | Massachusetts |
| 35 | Mary Hodgkins | 13 | Daughter | — | Massachusetts |
| 36 | Oliver Murphy | 33 | Head | Clerk | Connecticut |
| 37 | Mabel Murphy | 28 | Wife | Clerk | New York |
| 38 | Anne Murphy | 2 | Daughter | — | New York |
| 39 | Daniel Hoyle | 32 | Head | Foreman | England |
| 40 | Mary Hoyle | 49 | Wife | — | England |
Pedigree Summary
Charles
Gen 1 · 4 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)