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Mary Kelly — 1940 US Census Record
Linked across censuses1940 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) — first a head (b.~1892), then head of a 5-person household.
Age 48
b. ~1892
Female
Head
Born: Mass
Widowed
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Kelly |
| Given Name | Mary E. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 48 |
| Marital Status | Widowed |
| Birthplace | Mass |
| 1935 Residence (City) | East Boston city |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Highest Grade | Hs 4 |
| 1935 Residence | Same House |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | mass |
| Township / Ward | East Boston City |
| Est. Birth Year | ~1892 |
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 |
|---|---|---|---|---|
| Mary Kelly | Daughter | — | 17 | ~1923 |
| Mary Kelly | Head | — | 48 | ~1892 |
| Joseph Kelly | Son | — | 18 | ~1922 |
| William Kelly | Son | — | 26 | ~1914 |
| Paul Kelly | Son | — | 22 | ~1918 |
Census Appearances
1920
Suffolk, Massachusetts
Spouse, age 27
Suffolk, Massachusetts · implied b. ~1893 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kelley |
| Given Name | Mary C. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 27 |
| Marital Status | Married |
| Birthplace | Mass |
| Father's Birthplace | Mass |
| Mother's Birthplace | Mass |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | mass |
1930
Suffolk, Massachusetts
Spouse, age 38
Suffolk, Massachusetts · implied b. ~1892 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kelly |
| Given Name | Mary |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 38 |
| Marital Status | Married |
| Birthplace | Mass |
| Age at First Marriage | 36 |
| Father's Birthplace | Mass |
| Mother's Birthplace | Mass |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | mass |
1940
Suffolk-County, Massachusetts
Head, age 48
Suffolk-County, Massachusetts · implied b. ~1892 — 5 household members
| Surname | Kelly |
| Given Name | Mary E. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 48 |
| Marital Status | Widowed |
| Birthplace | Mass |
| 1935 Residence (City) | East Boston city |
| 1935 Residence (County) | Suffolk |
| Highest Grade | Hs 4 |
| 1935 Residence | Same House |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | mass |
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.
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This person
Anchor record
Mary Kelly
Head · 1940 · age 48 · b. ~1892 · 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-t0627-01657-00221)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Arthur J. Duffy | 59 | Head | Asst Foreman | Ireland |
| 2 | Ellen B. Duffy | 51 | Wife | — | Ireland |
| 3 | Arthur Duffy | 25 | Son | Manager | Mass |
| 4 | Ruth Duffy | 23 | Daughter | Packer | Mass |
| 5 | James Duffy | 20 | Son | — | Mass |
| 6 | Laura Duffy | 18 | Daughter | — | Mass |
| 7 | Amy B. Hamilton | 57 | Head | Server | Mass |
| 8 | Edward Earlewine | 29 | Head | Helper | Maine |
| 9 | Mary Earlewine | 31 | Wife | Clerk | Mass |
| 10 | Matthew J. Haley | 31 | Head | Elevator Operator | Mass |
| 11 | Amy Marie Haley | 29 | Wife | — | Mass |
| 12 | Amy Haley | 9 | Daughter | — | Mass |
| 13 | Matthew Jr. Haley | 8 | Son | — | Mass |
| 14 | Genarose Cascia | 67 | Head | Laborer | Italy |
| 15 | Aurora Cascia | 54 | Wife | — | Italy |
| 16 | Mary Cascia | 22 | Daughter | Packer | Mass |
| 17 | Josephine Cascia | 20 | Daughter | Packer | Mass |
| 18 | Fred Cascia | 25 | Son | Laborer | Mass |
| 19 | Yolanda Cascia | 19 | Daughter | — | Mass |
| 20 | Anthony Morevito | 32 | Head | Custodian | Mass |
| 21 | Frances Morevito | 26 | Wife | Stitcher | Italy |
| 22 | Louise A. Morevito | 0 | Daughter | — | Mass |
| 23 | Herbert Morrison | 49 | Head | Police Officer | Mass |
| 24 | Mildred Morrison | 39 | Wife | — | Mass |
| 25 | William Morrison | 13 | Son | — | Mass |
| 26 | Bessie Levett | 28 | Lodger | Sales Lady | Mass |
| 27 | Edwin Levett | 6 | Son | — | Mass |
| 28 | Louis A. Milward | 56 | Head | Sr. Clerk | Mass |
| 29 | Margaret Milward | 46 | Wife | — | Mass |
| 30 | Louis Jr. Milward | 25 | Son | Shipper | Mass |
| 31 | Phillip F. Milward | 19 | Son | Laborer | Mass |
| 32 | William J. Milward | 18 | Son | — | Mass |
| 33 | John H. Milward | 15 | Son | — | Mass |
| 34 | Charles Milward | 9 | Son | — | Mass |
| 35 | Frederic Milward | 9 | Son | — | Mass |
| 36 | Mary E. Kelly THIS PERSON | 48 | Head | — | Mass |
| 37 | Paul J. Kelly | 22 | Son | Investigator | Mass |
| 38 | William C. Kelly | 26 | Son | — | Mass |
| 39 | Joseph F. Kelly | 18 | Son | — | Mass |
| 40 | Mary A. Kelly | 17 | Daughter | — | Mass |
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)