CC
Charles Campbell — 1940 US Census Record
Model Tree available1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Charles Campbell across the 1910, 1920, 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents James & Margaret — first a son (b.~1905), then head of a 3-person household.
Age 35
b. ~1905
Male
Son
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Campbell |
| Given Name | Charles A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Somerville City |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | Educator |
| Industry | Board of Education |
| Class of Worker | GW |
| Hours Worked | 30 |
| Income (1939) | 34 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Educator |
| Township / Ward | Somerville City |
| Est. Birth Year | ~1905 |
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 |
|---|---|---|---|---|
| James Campbell | Head | — | 71 | ~1869 |
| Charles Campbell | Son | — | 35 | ~1905 |
| Margaret Campbell | Spouse | — | 70 | ~1870 |
Census Appearances
1910
Middlesex, Massachusetts
Son, age 3
Middlesex, Massachusetts · implied b. ~1907 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | Charles H 2d |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| 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 13
Middlesex, Massachusetts · implied b. ~1907 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | Charles F |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Son, age 23
Middlesex, Massachusetts · implied b. ~1907 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | Charles H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Asst Manager |
| Industry | Dept Store |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Son, age 35
Middlesex-County, Massachusetts · implied b. ~1905 — 3 household members
| Surname | Campbell |
| Given Name | Charles A. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 35 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Somerville City |
| 1935 Residence (County) | Middlesex |
| Occupation | Educator |
| Industry | Board of Education |
| Class of Worker | GW |
| Hours Worked | 30 |
| Income (1939) | 34 |
| Highest Grade | Hs 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 Campbell across 4 US Census years (1910, 1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father James Campbell (~0.92 confidence) and mother Margaret Campbell (~0.92 confidence) and father Howard Campbell (~0.92 confidence) and father Howard Campbell (~0.92 confidence) and mother Annie Campbell (~0.92 confidence) and father Edward Campbell (~0.92 confidence) and mother Angie Campbell (~0.92 confidence). The pedigree spans 1 generation with 7 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Campbell
b. ~1869
Source father
● Household
· direct · ~0.92
Mother
Margaret Campbell
b. ~1870
Source mother
● Household
· direct · ~0.92
Father
Howard Campbell
b. ~1884
Source father
● Household
· direct · ~0.92
Father
Howard Campbell
b. ~1884
Source father
● Household
· direct · ~0.92
Mother
Annie Campbell
b. ~1884
Source mother
● Household
· direct · ~0.92
Father
Edward Campbell
b. ~1885
Source father
● Household
· direct · ~0.92
Mother
Angie Campbell
b. ~1885
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Charles Campbell
Son · 1940 · age 35 · b. ~1905 · 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-t0627-01705-00472)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Dorothy J. Laughlin | 25 | Daughter | — | Massachusetts |
| 42 | Herbert M. Mitsch | 24 | Head | Bellboy | Massachusetts |
| 43 | Jessie E. Mitsch | 20 | Wife | Bookkeeper | Massachusetts |
| 44 | Richard Kafas|Kafis|Kafas | 29 | Boarder | Driver | Virginia |
| 45 | Fred Johnson | 57 | Head | — | Sweden |
| 46 | Elizabeth B. Johnson | 63 | Wife | — | Sweden |
| 47 | Eva G. Frost | 43 | Daughter | Clerk - Office | Massachusetts |
| 48 | Frank Doherty | 17 | Boarder | — | Massachusetts |
| 49 | Antonio G. Rosa | 34 | Head | Mailer | Massachusetts |
| 50 | Irene B. Rosa | 17 | Wife | — | Rhode Island |
| 51 | Charles A. Rosa | 12 | Son | — | Massachusetts |
| 52 | Robert E. Rosa | 11 | Son | — | Massachusetts |
| 53 | Ruth A. Rosa | 6 | Daughter | — | Massachusetts |
| 54 | Michael E. Hamilton | 52 | Head | Checker | Massachusetts |
| 55 | Helen M. Hamilton | 50 | Wife | — | Massachusetts |
| 56 | Catherine M. Hamilton | 27 | Daughter | Bookkeeper | Massachusetts |
| 57 | James P. Hamilton | 39 | Brother | System Mechanic | Massachusetts |
| 58 | William A. O'Brien | 60 | Head | Clerk | Massachusetts |
| 59 | Helen G. O'Brien | 59 | Wife | — | Massachusetts |
| 60 | Helen M. O'Brien | 31 | Daughter | Worker | Massachusetts |
| 61 | Alice J. Neeley | 58 | Head | Bookkeeper | Massachusetts |
| 62 | Catherine C. Neeley | 52 | Sister | School Nurse | Massachusetts |
| 63 | Peter F. Kavanaugh | 61 | Head | Store Manager | Massachusetts |
| 64 | Alfred G. Kavanaugh | 60 | Wife | — | Massachusetts |
| 65 | Edward J. Falls | 30 | Head | Fireman | Massachusetts |
| 66 | Catherine M. Falls | 31 | Wife | — | Massachusetts |
| 67 | Ellen Falls | 0 | Daughter | — | Massachusetts |
| 68 | Roland R. Young | 28 | Head | Minister | Maine |
| 69 | Ruth E. Young | 27 | Wife | — | Massachusetts |
| 70 | Joseph R. Young | 2 | Son | — | Maine |
| 71 | James P. Campbell | 71 | Head | — | Maine |
| 72 | Margaret A. Campbell | 70 | Wife | — | Connecticut |
| 73 | Charles A. Campbell THIS PERSON | 35 | Son | Educator | Massachusetts |
| 74 | John D. Irvin | 54 | Head | Copper Smith | Massachusetts |
| 75 | Mabel S. Irvin | 56 | Wife | — | Massachusetts |
| 76 | Violet M. Irvin | 41 | Daughter | Secretary | Massachusetts |
| 77 | Elma Nelson | 63 | Head | — | Sweden |
| 78 | Ruth Mcguinness | 41 | Head | Nurse | New York |
| 79 | Raymond Mcguinness | 18 | Son | Messenger | Massachusetts |
| 80 | Ruth Mcguinness | 17 | Daughter | Messenger | Massachusetts |
Pedigree Summary
Charles
Gen 1 · 7 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)