MK
Mary Keefe — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Essex, Massachusetts
Our Model Tree links this Mary Keefe across the 1920 and 1930 US Censuses in Essex, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1904), then head of a 5-person household.
Age 26
b. ~1904
Female
Daughter
Born: Massachusetts
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Essex, Massachusetts |
| Surname | Keefe |
| Given Name | Mary M |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Additional Details | |
| Occupation | Bench work |
| Industry | Electric appliance |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Bench Work |
| Township / Ward | Lynn City |
| Est. Birth Year | ~1904 |
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 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Walter Keefe | Son | — | 15 | ~1915 |
| Mary Keefe | Daughter | — | 26 | ~1904 |
| Leo Keefe | Son | — | 21 | ~1909 |
| Albert Keefe | Son | — | 13 | ~1917 |
| William Keefe | Head | — | 49 | ~1881 |
Census Appearances
1920
Essex, Massachusetts
Daughter, age 16
Essex, Massachusetts · implied b. ~1904 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Keefe |
| Given Name | Mary M |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 16 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Essex, Massachusetts
Daughter, age 26
Essex, Massachusetts · implied b. ~1904 — 5 household members
| Surname | Keefe |
| Given Name | Mary M |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 26 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Occupation | Bench work |
| Industry | Electric appliance |
| Class of Worker | W |
| Can Read/Write | Yes |
| 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 Keefe across 2 US Census years (1920 and 1930) in Essex, Massachusetts, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Keefe
Daughter · 1930 · age 26 · b. ~1904 · Massachusetts
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Sibling
Albert Keefe
Sibling · 1930 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Leo Keefe
Sibling · 1930 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Walter Keefe
Sibling · 1930 · 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
1930 US Federal Census — Essex, Massachusetts
Open full size
1930 US Federal Census — Essex, Massachusetts
Page Contents
50 people indexed on this census page (ia:1930:massachusettscensus00reel900:0058)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Mary L Piche | 53 | Wife H | — | Canada French |
| 2 | Mary L Piche | 27 | Daughter | Clerk | Massachusetts |
| 3 | Bernadette Piche | 18 | Daughter | Clerk | Massachusetts |
| 4 | Antoinette Piche | 15 | Daughter | — | Massachusetts |
| 5 | Eugene Beliveau | 42 | Head | Stitcher | New York |
| 6 | Albert Beliveau | 31 | Brother | Peddler | Massachusetts |
| 7 | Marie Beliveau | 20 | Sister | Stitcher | Massachusetts |
| 8 | Alfred Beliveau | 74 | Father | — | New York |
| 9 | Alfred J Leblanc | 38 | Head | Wood Heeler | Canada French |
| 10 | Clara L Leblanc | 40 | Wife H | — | Massachusetts |
| 11 | Irene D Leblanc | 11 | Daughter | — | Massachusetts |
| 12 | Beatrice R Leblanc | 10 | Daughter | — | Massachusetts |
| 13 | Alfred J Leblanc | 7 | Son | — | Massachusetts |
| 14 | Lionel G Leblanc | 4 | Son | — | Massachusetts |
| 15 | Lucille A Leblanc | 2 | Daughter | — | Massachusetts |
| 16 | Joseph A Melanson | 39 | Head | Carpenter | Canada French |
| 17 | Delina M Melanson | 38 | Wife H | — | Canada French |
| 18 | Doris M Melanson | 13 | Daughter | — | Massachusetts |
| 19 | Aquilla J Melanson | 11 | Son | — | Canada French |
| 20 | Loran M Melanson | 8 | Daughter | — | Canada French |
| 21 | Corrine M Melanson | 6 | Daughter | — | Massachusetts |
| 22 | Gerald J Melanson | 4 | Son | — | Massachusetts |
| 23 | Violet M Melanson | 2 | Daughter | — | Massachusetts |
| 24 | Nora L Melanson | 0 | Daughter | — | Massachusetts |
| 25 | Octave Bourque | 50 | Roomer | Packer | Canada French |
| 26 | Edgar J Bourque | 18 | Roomer | Dishwasher | Canada French |
| 27 | Albert Cormier | 25 | Roomer | Crane Operator | Canada French |
| 28 | Delal Melanson | 20 | Nephew | Dishwasher | Massachusetts |
| 29 | Leah M Melanson | 23 | Niece | Heel Coverer | Massachusetts |
| 30 | Elizabeth Melanson | 60 | Aunt | Housework | Canada French |
| 31 | William H Keefe | 49 | Head | — | Massachusetts |
| 32 | Mary M Keefe THIS PERSON | 26 | Daughter | Bench Work | Massachusetts |
| 33 | Leo F Keefe | 21 | Son | Odd Jobs | Massachusetts |
| 34 | Walter A Keefe | 15 | Son | — | Massachusetts |
| 35 | Albert B Keefe | 13 | Son | — | Massachusetts |
| 36 | Frank E Albee | 49 | Head | Winder | New Jersey |
| 37 | Mary Albee | 69 | Mother | — | New Jersey |
| 38 | Frank R Montani | 36 | Head | Foreman | Massachusetts |
| 39 | Annie Montani | 38 | Wife H | Assembler | New York |
| 40 | George H Walker | 32 | Head | Winder | Newfoundland |
| 41 | Esther H Walker | 24 | Wife H | — | Canada English |
| 42 | Mary E Walker | 0 | Daughter | — | Massachusetts |
| 43 | Gordon Mcgrath | 18 | Boarder | Steward | Canada English |
| 44 | Frank L Merrill | 59 | Head | General Work | Massachusetts |
| 45 | May Merrill | 55 | Wife H | — | Canada English |
| 46 | Henry Moriarty | 58 | Head | Winder | Maine |
| 47 | Sarah Moriarty | 50 | Wife H | Asst Forewoman | Canada French |
| 48 | Paul H Moriarty | 24 | Son | Salesman | Massachusetts |
| 49 | Charles E Moriarty | 22 | Son | Cost Clerk | Massachusetts |
| 50 | Mary J Sheehan | 74 | Head | — | Massachusetts |
About This Record & Model Tree
This record was independently indexed by YourRoots from the 1930 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)