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Mary Bailey — 1940 US Census Record
Model Tree available1940 United States Federal Census · Essex-County, Massachusetts
Our Model Tree links this Mary Bailey across the 1920, 1930 and 1940 US Censuses in Essex-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Charles & Charles — first a daughter (b.~1911), then head of a 6-person household.
Age 29
b. ~1911
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Essex-County, Massachusetts |
| Surname | Bailey |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Danvers Town |
| Additional Details | |
| Occupation | Bookkeeper |
| Industry | Wholesale Shoe Factory |
| Class of Worker | PW |
| Hours Worked | 12 |
| Income (1939) | 740 |
| Highest Grade | H-4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Bookkeeper |
| Township / Ward | Danvers Town |
| Est. Birth Year | ~1911 |
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.
6 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Bailey | Daughter | — | 29 | ~1911 |
| Patricia Bailey | Daughter | — | 18 | ~1922 |
| Charles Bailey | Head | — | 57 | ~1883 |
| Francis Bailey | Son | — | 24 | ~1916 |
| Charles Bailey | Son | — | 22 | ~1918 |
| Helena Bailey | Spouse | — | 57 | ~1883 |
Census Appearances
1920
Essex, Massachusetts
Daughter, age 9
Essex, Massachusetts · implied b. ~1911 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Bailey |
| Given Name | Mary E |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Essex, Massachusetts
Daughter, age 19
Essex, Massachusetts · implied b. ~1911 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Bailey |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Secretary |
| Industry | Linen Service Co. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Essex-County, Massachusetts
Daughter, age 29
Essex-County, Massachusetts · implied b. ~1911 — 6 household members
| Surname | Bailey |
| Given Name | Mary E. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Danvers Town |
| Occupation | Bookkeeper |
| Industry | Wholesale Shoe Factory |
| Class of Worker | PW |
| Hours Worked | 12 |
| Income (1939) | 740 |
| 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 Bailey across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Charles Bailey (~0.92 confidence) and father Charles Bailey (~0.92 confidence) and mother Hazel Bailey (~0.92 confidence) and mother Helena Bailey (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Charles Bailey
b. ~1883
Source father
● Household
· direct · ~0.92
Father
Charles Bailey
b. ~1883
Source father
● Household
· direct · ~0.92
Mother
Hazel Bailey
b. ~1883
Source mother
● Household
· direct · ~0.92
Mother
Helena Bailey
b. ~1883
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Bailey
Daughter · 1940 · age 29 · b. ~1911 · Massachusetts
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Sibling
Charles Bailey
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Bailey
Sibling · 1940 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Patricia Bailey
Sibling · 1940 · age 18
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 — Essex-County, Massachusetts
Open full size
1940 US Federal Census — Essex-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01578-00627)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Theresa Turenne | 3 | Daughter | — | Massachusetts |
| 2 | Raymond Begin | 37 | Head | Carpenter | Massachusetts |
| 3 | Mildred Begin | 35 | Wife | — | Massachusetts |
| 4 | Raymond Jr Begin | 6 | Son | — | Massachusetts |
| 5 | William D. Begin | 2 | Son | — | Massachusetts |
| 6 | Kenneth F. Shepard | 32 | Head | Lineman | Massachusetts |
| 7 | Francis Shepard | 30 | Wife | — | Massachusetts |
| 8 | Sandra Shepard | 6 | Daughter | — | Massachusetts |
| 9 | August G. Ladri | 52 | Head | Plumber | Vermont |
| 10 | Margaret C. Ladri | 57 | Wife | — | Irish Free State |
| 11 | Everett E. Thibodeau | 33 | Head | Stock Room | Massachusetts |
| 12 | Velma Thibodeau | 28 | Wife | — | Massachusetts |
| 13 | Ellen A. Kirby | 73 | Head | Forewoman | Massachusetts |
| 14 | Margaret C. Kirby | 60 | Sister | Teacher | Massachusetts |
| 15 | Mary E. Kirby | 73 | Head | — | Massachusetts |
| 16 | Francis H. Kirby | 40 | Son | Proprietor | Massachusetts |
| 17 | Grace L. Kirby | 38 | Daughter | Clerk | Massachusetts |
| 18 | Helen M. Kirby | 34 | Daughter | Clerk | Massachusetts |
| 19 | Reuben Rand | 53 | Head | Carpenter | Canada |
| 20 | Jennie G. Rand | 44 | Wife | — | Rhode Island |
| 21 | Arthur L. Rand | 22 | Son | Apprentice Carpenter | Massachusetts |
| 22 | Aris A. Rand | 18 | Daughter | — | Massachusetts |
| 23 | Ruth E. Rand | 17 | Daughter | — | Massachusetts |
| 24 | Abbie S. Rand | 76 | Mother | — | Canada |
| 25 | Archer Lovering | 40 | Head | Civil Serviceman | New York |
| 26 | Jean Lovering | 42 | Wife | — | Canada |
| 27 | Marjorie Lovering | 9 | Daughter | — | Massachusetts |
| 28 | Shirley Lovering | 1 | Daughter | — | Massachusetts |
| 29 | Charles H. Bailey | 57 | Head | Carpenter | Massachusetts |
| 30 | Helena M. Bailey | 57 | Wife | — | Massachusetts |
| 31 | Mary E. Bailey THIS PERSON | 29 | Daughter | Bookkeeper | Massachusetts |
| 32 | Francis L. Bailey | 24 | Son | — | Massachusetts |
| 33 | Charles G. Bailey | 22 | Son | — | Massachusetts |
| 34 | Patricia Bailey | 18 | Daughter | — | Massachusetts |
| 35 | Misinformed | None | — | — | — |
| 36 | Robert Vang | 37 | Head | Music Piano Teacher | Massachusetts |
| 37 | Carolyn Vang | 28 | Wife | — | Massachusetts |
| 38 | Richard Vang | 6 | Son | — | Massachusetts |
| 39 | Geraldine Vang | 0 | Daughter | — | Massachusetts |
| 40 | Abner H. Kelly | 65 | Head | Painter | Massachusetts |
Related Census Records
Pedigree Summary
Mary + 3 siblings
Gen 1 · 4 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)