MC
Mary Cummings — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Middlesex-County, Massachusetts
Our Model Tree links this Mary Cummings across the 1930 and 1940 US Censuses in Middlesex-County, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1918), then head of a 7-person household.
Age 22
b. ~1918
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Middlesex-County, Massachusetts |
| Surname | Cummings |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Somerville city |
| 1935 Residence (County) | Middlesex |
| Additional Details | |
| Occupation | house work |
| Industry | private house |
| Class of Worker | PW |
| Hours Worked | 24 |
| Income (1939) | 120 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | House Work |
| Township / Ward | Somerville City |
| Est. Birth Year | ~1918 |
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.
7 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Katherine Cummings | Daughter | — | 15 | ~1925 |
| Mary Cummings | Daughter | — | 22 | ~1918 |
| Dennis Cummings | Head | — | 47 | ~1893 |
| Francis Cummings | Son | — | 12 | ~1928 |
| Thomas Cummings | Son | — | 9 | ~1931 |
| Joseph Cummings | Son | — | 17 | ~1923 |
| Katherine Cummings | Spouse | — | 46 | ~1894 |
Census Appearances
1930
Middlesex, Massachusetts
Other, age 12
Middlesex, Massachusetts · implied b. ~1918 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cummings |
| Given Name | Mary |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Daughter, age 22
Middlesex-County, Massachusetts · implied b. ~1918 — 7 household members
| Surname | Cummings |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 22 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Somerville city |
| 1935 Residence (County) | Middlesex |
| Occupation | house work |
| Industry | private house |
| Class of Worker | PW |
| Hours Worked | 24 |
| Income (1939) | 120 |
| 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 Mary Cummings across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Cummings
Daughter · 1940 · age 22 · b. ~1918 · Massachusetts
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Sibling
Francis Cummings
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Katherine Cummings
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Thomas Cummings
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Cummings
Sibling · 1940 · age 17
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-t0627-01704-00346)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Raymond Lucaly | 16 | son | — | Massachusetts |
| 2 | Walter Lucaly | 12 | son | — | Massachusetts |
| 3 | Amy Simpson | 62 | Head | — | Massachusetts |
| 4 | Martha Simpson | 60 | sister | Waitress | Massachusetts |
| 5 | Charles H. Buckelor | 30 | Head | Baker | New Jersey |
| 6 | Josephine Buckelor | 26 | wife | Loom Operator | Massachusetts |
| 7 | Louis Baldini | 30 | partner | Heelant Laster | Massachusetts |
| 8 | Gloria Baldini | 21 | wife | Fry Girl | Massachusetts |
| 9 | Louis Baldini | 1 | son | — | Massachusetts |
| 10 | Mary Gaddry | 70 | Head | — | Eire |
| 11 | John Gaddry | 36 | son | Foreman | Massachusetts |
| 12 | Thomas J. Gaddry | 16 | nephew | — | Massachusetts |
| 13 | Anna Demarco | 46 | Head | — | Massachusetts |
| 14 | Josephine Demarco | 22 | daughter | New Worker | Massachusetts |
| 15 | Gloria Demarco | 17 | daughter | — | Massachusetts |
| 16 | Marguerite Demarco | 15 | daughter | New Worker | Massachusetts |
| 17 | Adam Urbanovitch | 50 | Head | Laborer | Poland |
| 18 | Annie Urbanovitch | 49 | wife | — | Poland |
| 19 | Broni Urbanovitch | 25 | son | Truck Driver | Massachusetts |
| 20 | Dennis Cummings | 47 | Head | Laborer | Eire |
| 21 | Katherine Cummings | 46 | wife | — | Eire |
| 22 | Mary Cummings THIS PERSON | 22 | daughter | House Work | Massachusetts |
| 23 | Joseph Cummings | 17 | son | — | Massachusetts |
| 24 | Katherine Cummings | 15 | daughter | — | Massachusetts |
| 25 | Francis Cummings | 12 | son | — | Massachusetts |
| 26 | Thomas Cummings | 9 | son | — | Massachusetts |
| 27 | Daniel Campbell | 31 | Head | Maintenance Mechanic | New York |
| 28 | Mary V. Campbell | 28 | wife | — | Massachusetts |
| 29 | John Campbell | 8 | son | — | Massachusetts |
| 30 | William Campbell | 7 | son | — | Massachusetts |
| 31 | Viola Campbell | 4 | daughter | — | Massachusetts |
| 32 | Irene Campbell | 3 | daughter | — | Massachusetts |
| 33 | Bridget A. Nolan | 75 | Head | — | Northern Ireland |
| 34 | James J. Nolan | 39 | son | Machinist | Massachusetts |
| 35 | Ward J. Nolan | 37 | son | Car Painter | Massachusetts |
| 36 | Warren F. Bannigan | 48 | Head | Shoe Designer | Massachusetts |
| 37 | Alice M. Bannigan | 41 | wife | — | Massachusetts |
| 38 | Alice M. Bannigan | 14 | daughter | — | Massachusetts |
| 39 | Dorothy L. Bannigan | 13 | daughter | — | Massachusetts |
| 40 | Barbara A. Bannigan | 11 | 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)