MK
Mary Kelly — 1940 US Census Record
Model Tree available1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this Mary Kelly across the 1920, 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed), with identified parents John & Mary — first a daughter (b.~1891), then head of a 3-person household.
Age 49
b. ~1891
Female
Daughter
Born: Maine
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Kelly |
| Given Name | Mary G. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 49 |
| Marital Status | Single |
| Birthplace | Maine |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Occupation | Shoe worker |
| Industry | Shoe factory |
| Class of Worker | PW |
| Hours Worked | 27 |
| Income (1939) | 300 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Maine |
| Birth Country | United States |
| Birthplace (normalized) | maine |
| Occupation | Shoe Worker |
| Township / Ward | Boston |
| Est. Birth Year | ~1891 |
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.
3 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Kelly | Daughter | — | 49 | ~1891 |
| John Kelly | Head | — | 82 | ~1858 |
| Mary Kelly | Spouse | — | 78 | ~1862 |
Census Appearances
1920
Suffolk, Massachusetts
Other, age 28
Suffolk, Massachusetts · implied b. ~1892 — 38 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kelly |
| Given Name | Maud |
| Relationship to Head | Lodger |
| Sex | F |
| Color / Race | White |
| Age | 28 |
| Marital Status | Widowed |
| Birthplace | Maine |
| Father's Birthplace | Maine |
| Mother's Birthplace | Maine |
| Occupation | Worker |
| Industry | Laundry |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maine |
| Birth Country | United States |
| Birthplace (normalized) | maine |
1930
Suffolk, Massachusetts
Other, age 39
Suffolk, Massachusetts · implied b. ~1891 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kelley |
| Given Name | Mary G. |
| Relationship to Head | Sister-in-law |
| Sex | F |
| Color / Race | White |
| Age | 39 |
| Marital Status | Single |
| Birthplace | Maine |
| Father's Birthplace | Maine |
| Mother's Birthplace | Maine |
| Occupation | Shoeworker |
| Industry | Shoe Factory |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Maine |
| Birth Country | United States |
| Birthplace (normalized) | maine |
1940
Suffolk-County, Massachusetts
Daughter, age 49
Suffolk-County, Massachusetts · implied b. ~1891 — 3 household members
| Surname | Kelly |
| Given Name | Mary G. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 49 |
| Marital Status | Single |
| Birthplace | Maine |
| 1935 Residence (City) | Boston |
| 1935 Residence (County) | Suffolk |
| Occupation | Shoe worker |
| Industry | Shoe factory |
| Class of Worker | PW |
| Hours Worked | 27 |
| Income (1939) | 300 |
| Highest Grade | Hs 4 |
| 1935 Residence | Same place |
| Birth State | Maine |
| Birth Country | United States |
| Birthplace (normalized) | maine |
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 Kelly across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father John Kelly (~0.92 confidence) and mother Mary Kelly (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
John Kelly
b. ~1858
Source father
● Household
· direct · ~0.92
Mother
Mary Kelly
b. ~1862
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Mary Kelly
Daughter · 1940 · age 49 · b. ~1891 · Massachusetts
★ You are viewing this record
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
40 people indexed on this census page (nara:1940:m-t0627-01682-00199)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mary L. Gobbi | 46 | Wife | — | Italy |
| 2 | Vito N. Gobbi | 27 | Son | Laborer | Italy |
| 3 | Eugene Gobbi | 24 | Son | — | Indiana |
| 4 | Joseph Gobbi | 22 | Son | Laborer | Ohio |
| 5 | George J. Sullivan | 42 | Head | Chauffeur | Massachusetts |
| 6 | Ethel M. Sullivan | 36 | Wife | — | Rhode Island |
| 7 | Mary E. Sullivan | 14 | Daughter | — | Massachusetts |
| 8 | Virginia Sullivan | 9 | Daughter | — | Massachusetts |
| 9 | Ellen Sullivan | 5 | Daughter | — | Massachusetts |
| 10 | James W. Hardy | 30 | Head | Delivery Man | Massachusetts |
| 11 | Anne S. Hardy | 24 | Wife | — | Massachusetts |
| 12 | James Hardy | 1 | Son | — | Massachusetts |
| 13 | Ida R. Foster | 53 | Head | — | Russia |
| 14 | Frances Foster | 23 | Daughter | Stenographer | Massachusetts |
| 15 | Jacob Hirshman | 43 | Head | Punch Press Operator | Russia |
| 16 | Sadie R. Hirshman | 41 | Wife | — | Austria |
| 17 | Harry J. Devereaux | 51 | Head | Laborer | England |
| 18 | David J. Walsh | 51 | Head | Watchman | Irish Free State |
| 19 | Alice M. Walsh | 53 | Wife | — | Irish Free State |
| 20 | Catherine M. Walsh | 20 | Daughter | Attendant | Massachusetts |
| 21 | Alice B. Walsh | 18 | Daughter | Packer | Massachusetts |
| 22 | David J. Walsh | 13 | Son | — | Massachusetts |
| 23 | John J. Walsh | 11 | Son | — | Massachusetts |
| 24 | Lila D. Clark | 70 | Head | — | New Hampshire |
| 25 | Albert Hass | 40 | Lodger | Bookkeeper | Connecticut |
| 26 | Minnie L. French | 68 | Lodger | Seamstress | Massachusetts |
| 27 | John E. Kelly | 82 | Head | — | Maine |
| 28 | Mary J. Kelly | 78 | Wife | — | Irish Free State |
| 29 | Mary G. Kelly THIS PERSON | 49 | Daughter | Shoe Worker | Maine |
| 30 | Elizabeth B. Felch | 66 | Head | — | Maine |
| 31 | Fred H. Felch | 31 | Son | Salesman | Massachusetts |
| 32 | William W. Cooke | 56 | Head | Repair Man | Canada English |
| 33 | Etta M. Cooke | 51 | Wife | — | Massachusetts |
| 34 | Mabel B. Cooke | 16 | Daughter | — | Massachusetts |
| 35 | Thomas J. Kinney | 28 | Head | House Painter | Massachusetts |
| 36 | Anita Kinney | 26 | Wife | — | Massachusetts |
| 37 | Paul J. Kinney | 1 | Son | — | Massachusetts |
| 38 | Madeline A. Kinney | 0 | Daughter | — | Massachusetts |
| 39 | Edwin Kennedy | 37 | Head | Time Keeper | Massachusetts |
| 40 | Ethel J. Kennedy | 48 | Wife | — | Canada English |
Pedigree Summary
Mary
Gen 1 · 2 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)