DC
Dorothy Campbell — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Dorothy Campbell across the 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1927), then head of a 9-person household.
Age 13
b. ~1927
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Campbell |
| Given Name | Dorothy |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Somerville |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Highest Grade | 6 |
| 1935 Residence | Same house |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Somerville |
| Est. Birth Year | ~1927 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Dorothy | Age | Birth yr |
|---|---|---|---|---|
| James Campbell | Son | — | 2 | ~1938 |
| Lillian Campbell | Spouse | — | 38 | ~1902 |
| Ruth Campbell | Daughter | — | 4 | ~1936 |
| James Campbell | Head | — | 39 | ~1901 |
| Dorothy Campbell | Daughter | — | 13 | ~1927 |
| June Campbell | Daughter | — | 8 | ~1932 |
| Marie Campbell | Daughter | — | 10 | ~1930 |
| George Campbell | Son | — | 15 | ~1925 |
| Jean Campbell | Daughter | — | 7 | ~1933 |
Census Appearances
1930
Suffolk, Massachusetts
Daughter, age 4
Suffolk, Massachusetts · implied b. ~1926 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Campbell |
| Given Name | Dorothy |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | Black |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Daughter, age 13
Middlesex-County, Massachusetts · implied b. ~1927 — 9 household members
| Surname | Campbell |
| Given Name | Dorothy |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Somerville |
| 1935 Residence (County) | Middlesex |
| Highest Grade | 6 |
| 1935 Residence | Same house |
| 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 Dorothy Campbell across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Dorothy Campbell
Daughter · 1940 · age 13 · b. ~1927 · Massachusetts
★ You are viewing this record
Sibling
June Campbell
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Campbell
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ruth Campbell
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marie Campbell
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jean Campbell
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
George Campbell
Sibling · 1940 · age 15
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 — 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-t0627-01702-00293)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | James Dennehy | 20 | Son | Laborer | Massachusetts |
| 2 | Jean Dennehy | 15 | Daughter | — | Massachusetts |
| 3 | Robert Dennehy | 13 | Son | — | Massachusetts |
| 4 | Helen Dennehy | 63 | Mother | — | Ireland |
| 5 | Helen Dennehy | 22 | Sister | Saleswoman | Massachusetts |
| 6 | James Campbell | 39 | Head | Steamfitter | Canada-English |
| 7 | Lillian Campbell | 38 | Wife | — | Canada-English |
| 8 | George Campbell | 15 | Son | — | Massachusetts |
| 9 | Dorothy Campbell THIS PERSON | 13 | Daughter | — | Massachusetts |
| 10 | Marie Campbell | 10 | Daughter | — | Massachusetts |
| 11 | June Campbell | 8 | Daughter | — | Massachusetts |
| 12 | Jean Campbell | 7 | Daughter | — | Massachusetts |
| 13 | Ruth Campbell | 4 | Daughter | — | Massachusetts |
| 14 | James Campbell | 2 | Son | — | Massachusetts |
| 15 | C. Frederick Mceachern | 47 | Head | Brakeman | Massachusetts |
| 16 | Eva Mceachern | 36 | Wife | — | Canada-English |
| 17 | Clarence Mceachern | 17 | Son | — | Massachusetts |
| 18 | C. William Mceachern | 55 | Roomer | Brakeman | Canada-English |
| 19 | Jeremiah O'Leary | 56 | Head | Painter | Ireland |
| 20 | Helen O'Leary | 56 | Wife | — | Massachusetts |
| 21 | Arthur O'Leary | 16 | Son | — | Massachusetts |
| 22 | Ross Cornelius | 53 | Head | Meat Cutter | Italy |
| 23 | Elena Cornelius | 44 | Wife | — | Italy |
| 24 | Mary Cornelius | 19 | Daughter | — | Massachusetts |
| 25 | Anna Cornelius | 12 | Daughter | — | Massachusetts |
| 26 | Patricia Cornelius | 5 | Daughter | — | Massachusetts |
| 27 | Rita Cornelius | 0 | Daughter | — | Massachusetts |
| 28 | Peter Polito | 63 | Head | Laborer | Italy |
| 29 | Victoria Polito | 51 | Wife | — | Italy |
| 30 | John Polito | 29 | Son | Barber | Italy |
| 31 | Mary Polito | 20 | Daughter | Floor Work | Italy |
| 32 | Salvatore Polito | 15 | Son | — | Italy |
| 33 | Anna Polito | 11 | Daughter | — | Massachusetts |
| 34 | Joseph Polito | 25 | Son | Floor Work | Italy |
| 35 | Madeline Polito | 28 | Daughter-in-law | Dresser | Massachusetts |
| 36 | Joseph Zappulla | 33 | Head | Machine Operator | Italy |
| 37 | Mary Zappulla | 33 | Wife | — | Massachusetts |
| 38 | Mary Zappulla | 7 | Daughter | — | Massachusetts |
| 39 | Mary Flynn | 75 | Head | — | Ireland |
| 40 | Mary Flynn | 40 | Daughter | — | Massachusetts |
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)