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Mary Logan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Worcester-County, Massachusetts
Our Model Tree links this Mary Logan across the 1930 and 1940 US Censuses in Worcester-County, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1902), then head of a 10-person household.
Age 38
b. ~1902
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Worcester-County, Massachusetts |
| Surname | Logan |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 38 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Worcester City |
| 1935 Residence (County) | Worcester |
| Additional Details | |
| Occupation | Doffer |
| Industry | Woolen Mill |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1056 |
| Highest Grade | No 5 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Doffer |
| Township / Ward | Worcester City |
| Est. Birth Year | ~1902 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Wesley Janulewicz | Daughter | — | 17 | ~1923 |
| Doris Janulewicz | Daughter | — | 22 | ~1918 |
| Irene Janulewicz | Daughter | — | 19 | ~1921 |
| Mary Logan | Daughter | — | 38 | ~1902 |
| Joseph Janulewicz | Head | — | 49 | ~1891 |
| Delia Logan | Other | — | 64 | ~1876 |
| Michael Logan | Son | — | 34 | ~1906 |
| Walter Janulewicz | Son | — | 21 | ~1919 |
| Joseph Janulewicz | Son | — | 7 | ~1933 |
| Mary Janulewicz | Spouse | — | 48 | ~1892 |
Census Appearances
1930
Worcester, Massachusetts
Spouse, age 26
Worcester, Massachusetts · implied b. ~1904 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Logan |
| Given Name | Margaret |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| Age at First Marriage | 23 |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Ireland |
| Occupation | at home |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Worcester-County, Massachusetts
Daughter, age 38
Worcester-County, Massachusetts · implied b. ~1902 — 10 household members
| Surname | Logan |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 38 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Worcester City |
| 1935 Residence (County) | Worcester |
| Occupation | Doffer |
| Industry | Woolen Mill |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1056 |
| Highest Grade | No 5 |
| 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 Logan across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Logan
Daughter · 1940 · age 38 · b. ~1902 · Massachusetts
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Sibling
Michael Logan
Sibling · 1940 · age 34
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Joseph Janulewicz
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Walter Janulewicz
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Wesley Janulewicz
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Irene Janulewicz
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Doris Janulewicz
Sibling · 1940 · age 22
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 — Worcester-County, Massachusetts
Open full size
1940 US Federal Census — Worcester-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01716-00402)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Katherine Corrigan | 35 | Wife | House Keeper | Massachusetts |
| 2 | Mary E Corrigan | 4 | Daughter | — | Massachusetts |
| 3 | Christian Salisbury | 52 | Head | Repair Man | Massachusetts |
| 4 | Helen Salisbury | 47 | Wife | House Keeper | Massachusetts |
| 5 | Evelyn Salisbury | 18 | Daughter | Student | Massachusetts |
| 6 | Alexander Shallin | 53 | Head | Machinist | Lithuania |
| 7 | Frances Shallin | 49 | Wife | House Keeper | Lithuania |
| 8 | Anna Shallin | 22 | Daughter | Topper | Massachusetts |
| 9 | Ruth Shallin | 16 | Daughter | Pupil | Massachusetts |
| 10 | Victor Shallin | 15 | Son | Pupil | Massachusetts |
| 11 | Adam Jenka | 22 | Nephew | Wharf | Massachusetts |
| 12 | Leonard Jenka | 18 | Nephew | Salesman | Massachusetts |
| 13 | John F Barron | 48 | Brother | Teacher | Massachusetts |
| 14 | Helen E Barron | 40 | Head | Bookkeeper | Massachusetts |
| 15 | Ann B Barron | 25 | Sister | House Keeper | Massachusetts |
| 16 | Vincent Skamarakas | 50 | Head | Weaver | Lithuania |
| 17 | Bridget Skamarakas | 48 | Wife | House Keeper | Lithuania |
| 18 | John Skamarakas | 26 | Son | Laborer | Massachusetts |
| 19 | Albin Skamarakas | 19 | Son | Student | Massachusetts |
| 20 | Anthony Skamarakas | 17 | Son | Student | Massachusetts |
| 21 | Helen Skamarakas | 13 | Daughter | Pupil | Massachusetts |
| 22 | Rita Skamarakas | 8 | Daughter | Pupil | Massachusetts |
| 23 | Joseph Janulewicz | 49 | Head | Machinist | Poland |
| 24 | Mary Janulewicz | 48 | Wife | House Keeper | Poland |
| 25 | Walter Janulewicz | 21 | Son | Machinist | Massachusetts |
| 26 | Doris Janulewicz | 22 | Daughter | Waitress | Massachusetts |
| 27 | Irene Janulewicz | 19 | Daughter | Shoe Worker | Massachusetts |
| 28 | Wesley Janulewicz | 17 | Daughter | Student | Massachusetts |
| 29 | Joseph Jr Janulewicz | 7 | Son | Student | Massachusetts |
| 30 | Delia Logan | 64 | Mother | House Keeper | Eire State |
| 31 | Mary Logan THIS PERSON | 38 | Daughter | Doffer | Massachusetts |
| 32 | Michael Logan | 34 | Son | Laborer | Massachusetts |
| 33 | John J Kelley | 33 | Head | Laborer | Massachusetts |
| 34 | Catherine Kelley | 38 | Wife | House Keeper | Massachusetts |
| 35 | Thomas J Kelley | 8 | Son | Pupil | Massachusetts |
| 36 | Catherine M Kelley | 6 | Daughter | Pupil | Massachusetts |
| 37 | Joan T Kelley | 4 | Daughter | Pupil | Massachusetts |
| 38 | John J Jr Kelley | 2 | Son | — | Massachusetts |
| 39 | Peter Shitomisky | 55 | Head | Wire Drawer | Lithuania |
| 40 | Ida Shitomisky | 55 | Wife | House Keeper | Lithuania |
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)