MC
Mary Cameron — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Mary Cameron across the 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1924), then head of a 8-person household.
Age 16
b. ~1924
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Cameron |
| Given Name | Mary T |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | SOMERVILLE CITY |
| 1935 Residence (County) | MIDDLESEX |
| Additional Details | |
| Highest Grade | H-2 |
| 1935 Residence | Same Place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Somerville City |
| Est. Birth Year | ~1924 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Cameron | Daughter | — | 16 | ~1924 |
| Joseph Mcgilvery | Other | — | 5 | ~1935 |
| Allan Cameron | Head | — | 48 | ~1892 |
| Allan Cameron | Son | — | 15 | ~1925 |
| Ita Cameron | Spouse | — | 48 | ~1892 |
| John Cameron | Son | — | 12 | ~1928 |
| Eleanor Cameron | Daughter | — | 13 | ~1927 |
| Rose Cameron | Daughter | — | 9 | ~1931 |
Census Appearances
1930
Middlesex, Massachusetts
Daughter, age 6
Middlesex, Massachusetts · implied b. ~1924 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cameron |
| Given Name | Mary G |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 6 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Canada English |
| Mother's Birthplace | Canada English |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Daughter, age 16
Middlesex-County, Massachusetts · implied b. ~1924 — 8 household members
| Surname | Cameron |
| Given Name | Mary T |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | SOMERVILLE CITY |
| 1935 Residence (County) | MIDDLESEX |
| Highest Grade | H-2 |
| 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 Mary Cameron across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Cameron
Daughter · 1940 · age 16 · b. ~1924 · Massachusetts
★ You are viewing this record
Sibling
Rose Cameron
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Cameron
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Allan Cameron
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Eleanor Cameron
Sibling · 1940 · age 13
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-t0627-01705-00038)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Matthew W Harkins | 45 | Head | Operator | Massachusetts |
| 2 | Marie C Harkins | 41 | Wife | — | Massachusetts |
| 3 | Marjorie M Harkins | 13 | Daughter | — | Massachusetts |
| 4 | Block Here Ends | None | #140 AND | — | — |
| 5 | Carlton V Miller | 57 | Head | Interior Decorator | Massachusetts |
| 6 | Gilbert R Miller | 19 | Son | Bell Boy | Massachusetts |
| 7 | Howard C Miller | 15 | Son | — | Massachusetts |
| 8 | Dorothy Miller | 9 | Daughter | — | Massachusetts |
| 9 | Mary C P Mackinnon | 57 | Aunt-in-law | Seamstress | Canada French |
| 10 | Allan Cameron | 48 | Head | Lineman | Canada English |
| 11 | Ita R Cameron | 48 | Wife | — | Canada English |
| 12 | Mary T Cameron THIS PERSON | 16 | Daughter | — | Massachusetts |
| 13 | Allan J Cameron | 15 | Son | — | Massachusetts |
| 14 | Eleanor J Cameron | 13 | Daughter | — | Massachusetts |
| 15 | John A Cameron | 12 | Son | — | Massachusetts |
| 16 | Rose V Cameron | 9 | Daughter | — | Massachusetts |
| 17 | Joseph Mcgilvery | 5 | Adopted Son | — | Canada English |
| 18 | Victor P Cavagnaro | 73 | Head | — | Italy |
| 19 | Adelride M Cavagnaro | 57 | Wife | — | Massachusetts |
| 20 | Richard J Cavagnaro | 27 | Son | — | Massachusetts |
| 21 | Edna A Cavagnaro | 25 | Daughter | Bookkeeper | Massachusetts |
| 22 | Victor P Jr Cavagnaro | 20 | Son | Stock Boy | Massachusetts |
| 23 | George M Flechtner | 27 | Head | Switchman | Massachusetts |
| 24 | Kathryn M Flechtner | 23 | Wife | — | Massachusetts |
| 25 | Charles W Flechtner | 2 | Son | — | Massachusetts |
| 26 | Jeanne V Flechtner | 0 | Daughter | — | Massachusetts |
| 27 | Charles A Coveney | 65 | Lodger | — | Maine |
| 28 | John W Copeland | 68 | Head | Machinist | Canada English |
| 29 | Ellen Ellis | 60 | Housekeeper | Housekeeper | Canada English |
| 30 | Roy M Barter | 49 | Head | Salesman | Maine |
| 31 | Emma B Barter | 50 | Wife | — | Maine |
| 32 | Francis B Barter | 15 | Son | — | Massachusetts |
| 33 | Edward J Fadgen | 45 | Head | Clerk | Massachusetts |
| 34 | Mary J Fadgen | 17 | Daughter | — | Rhode Island |
| 35 | Edward J Jr Fadgen | 15 | Son | — | Rhode Island |
| 36 | Roberta A Fadgen | 12 | Daughter | — | Rhode Island |
| 37 | James H Fadgen | 11 | Son | — | Rhode Island |
| 38 | William A Fadgen | 6 | Son | — | Rhode Island |
| 39 | Daniel L Mccue | 52 | Head | Chief Clerk | Pennsylvania |
| 40 | Mary M Mccue | 53 | Wife | — | 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)