MK
Mary Keenan — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this Mary Keenan across the 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1920), then head of a 5-person household.
Age 20
b. ~1920
Female
Daughter
Born: Massachusetts
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Keenan |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Occupation | Bar tender |
| Industry | Cafe |
| Class of Worker | PW |
| Hours Worked | 36 |
| Income (1939) | 546 |
| Highest Grade | H 4 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Bartender |
| Township / Ward | Boston City |
| Est. Birth Year | ~1920 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Teresa Keenan | Daughter | — | 15 | ~1925 |
| Robert Keenan | Son | — | 38 | ~1902 |
| William Keenan | Son | — | 32 | ~1908 |
| Ida Keenan | Head | — | 58 | ~1882 |
| Mary Keenan | Daughter | — | 20 | ~1920 |
Census Appearances
1930
Suffolk, Massachusetts
Daughter, age 10
Suffolk, Massachusetts · implied b. ~1920 — 14 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Keenan |
| Given Name | Mary A |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| 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
Suffolk-County, Massachusetts
Daughter, age 20
Suffolk-County, Massachusetts · implied b. ~1920 — 5 household members
| Surname | Keenan |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 20 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Occupation | Bar tender |
| Industry | Cafe |
| Class of Worker | PW |
| Hours Worked | 36 |
| Income (1939) | 546 |
| 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 Keenan across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Keenan
Daughter · 1940 · age 20 · b. ~1920 · Massachusetts
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Sibling
William Keenan
Sibling · 1940 · age 32
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Keenan
Sibling · 1940 · age 38
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Teresa Keenan
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 — Suffolk-County, Massachusetts
Open full size
1940 US Federal Census — Suffolk-County, Massachusetts
Page Contents
36 people indexed on this census page (nara:1940:m-t0627-01658-00037)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Walter Higgins | 19 | Son | — | Massachusetts |
| 2 | Eileen Higgins | 18 | Daughter | Prep. A Toys | Massachusetts |
| 3 | Thomas Higgins | 17 | Son | — | Massachusetts |
| 4 | Ruth Higgins | 15 | Daughter | — | Massachusetts |
| 5 | Virginia Higgins | 11 | Daughter | — | Massachusetts |
| 6 | Marion Higgins | 9 | Daughter | — | Massachusetts |
| 7 | Rita Higgins | 7 | Daughter | — | Massachusetts |
| 8 | Barbara Higgins | 6 | Daughter | — | Massachusetts |
| 9 | John Duggan | 51 | Head | Foreman | Massachusetts |
| 10 | Sophia Duggan | 46 | Wife | — | Massachusetts |
| 11 | John Duggan | 21 | Son | Laborer | Massachusetts |
| 12 | Ralph Duggan | 19 | Son | Stock Boy | Massachusetts |
| 15 | Ida M. Keenan | 58 | Head | — | Massachusetts |
| 16 | Robert Keenan | 38 | Son | — | Massachusetts |
| 17 | William Keenan | 32 | Son | Painter | Massachusetts |
| 18 | Mary Keenan THIS PERSON | 20 | Daughter | Bar Tender | Massachusetts |
| 19 | Teresa Keenan | 15 | Daughter | Mother'S Helper | Massachusetts |
| 20 | Joseph Bollino | 54 | Head | — | Italy |
| 21 | Mary Bollino | 50 | Wife | Furniture Finisher | Italy |
| 22 | Joseph Bollino | 23 | Son | — | Massachusetts |
| 23 | Frances Bollino | 21 | Daughter | Laborer | Massachusetts |
| 24 | Nicholas Bollino | 19 | Son | Salesgirl | Massachusetts |
| 25 | Agrippino Bollino | 16 | Son | Messenger Boy | Massachusetts |
| 28 | Lawrence J. Depaspro | 32 | Head | Cylinder Pressman | Massachusetts |
| 29 | Malvina Depaspro | 32 | Wife | — | Massachusetts |
| 30 | Eleanor Depaspro | 11 | Daughter | — | Massachusetts |
| 31 | Robert Depaspro | 3 | Son | — | Massachusetts |
| 32 | Peter Ciardo | 43 | Head | Meat Cutter | Italy |
| 33 | Jennie Ciardo | 35 | Wife | Stitcher | Massachusetts |
| 34 | Edward Ciardo | 16 | Son | — | Massachusetts |
| 35 | Robert Ciardo | 11 | Son | — | Massachusetts |
| 36 | Loretta Ciardo | 9 | Daughter | — | Massachusetts |
| 37 | Nicholas Alonzo | 40 | Cousin | Presser | Italy |
| 38 | Louis Venuti | 40 | Head | Packer | Italy |
| 39 | Carmella Venuti | 18 | Daughter | Mender | Massachusetts |
| 40 | Assunta Guadagnino | 64 | Mother | — | Italy |
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)