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.~1918), then head of a 7-person household.
Age 12
b. ~1918
Female
Daughter
Born: Massachusetts
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Essex, Massachusetts |
| Surname | Keefe |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Additional Details | |
| Occupation | none |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | City Of Lawrence |
| Est. Birth Year | ~1918 |
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.
7 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| George Keefe | Son | — | 24 | ~1906 |
| Wincent Keefe | Son | — | 10 | ~1920 |
| Mary Gray | Other | — | 72 | ~1858 |
| Bernard Keefe | Son | — | 8 | ~1922 |
| Mary Keefe | Daughter | — | 12 | ~1918 |
| Gordon Keefe | Son | — | 14 | ~1916 |
| John Keefe | Head | — | 49 | ~1881 |
Census Appearances
1920
Essex, Massachusetts
Daughter, age 1
Essex, Massachusetts · implied b. ~1919 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Keefe |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 1 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Essex, Massachusetts
Daughter, age 12
Essex, Massachusetts · implied b. ~1918 — 7 household members
| Surname | Keefe |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 12 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | England |
| Mother's Birthplace | England |
| Occupation | none |
| 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 12 · b. ~1918 · Massachusetts
★ You are viewing this record
Sibling
George Keefe
Sibling · 1930 · age 24
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Wincent Keefe
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Bernard Keefe
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Gordon Keefe
Sibling · 1930 · age 14
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:massachusettscensus00reel898:0896)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Emil Jr Ribeau | 13 | Son | None | Massachusetts |
| 52 | Arthur Ribeau | 11 | Son | None | Massachusetts |
| 53 | Rita Ribeau | 9 | Daughter | None | Massachusetts |
| 54 | Florence Ribeau | 5 | Daughter | None | Massachusetts |
| 55 | Bertha Ribeau | 2 | Daughter | None | Massachusetts |
| 56 | Felix Lunda | 52 | Head | Weaver | Poland |
| 57 | Frances Lunda | 42 | Wife-H | None | Poland |
| 58 | William Lunda | 22 | Son | Bobbin Boy | Massachusetts |
| 59 | Catherine Lunda | 17 | daughter | Housework | Massachusetts |
| 60 | John Lunda | 16 | Son | None | Massachusetts |
| 61 | Mary Lunda | 13 | daughter | None | Massachusetts |
| 62 | Annie Lunda | 11 | daughter | None | Massachusetts |
| 63 | Sophie Lunda | 9 | daughter | None | Massachusetts |
| 64 | Frances Lunda | 5 | daughter | None | Massachusetts |
| 65 | Alphonse Gagnon | 51 | Head | Ground To Printer | Canada-French |
| 66 | Blanche Gagnon | 53 | Wife-H | None | Massachusetts |
| 67 | Nikifor Pekunecz | 39 | Head | Laborer | Russia |
| 68 | Annie Pekunecz | 43 | Wife-H | Winder | Russia |
| 69 | Peter Pekunecz | 13 | Son | None | Massachusetts |
| 70 | Paul Pekunecz | 4 | Son | None | Massachusetts |
| 71 | Louis Marchesault | 55 | Head | House Agent | Canada-French |
| 72 | Amelia Marchesault | 55 | Wife-H | None | Canada-French |
| 73 | Louis Marchesault | 31 | Son | Theatre Office | Connecticut |
| 74 | Helen Haldin | 41 | Head-H | Housework | Massachusetts |
| 75 | Agnes Lula | 36 | Head-H | Winder | Poland |
| 76 | Frank Lula | 12 | Son | None | Massachusetts |
| 77 | William Prewligan | 66 | Head | Porter | England |
| 78 | Annie Scanlon | 60 | Head | None | Massachusetts |
| 79 | John Keefe | 49 | Head | Steamfitter | England |
| 80 | George Keefe | 24 | Son | Clerk | Massachusetts |
| 81 | Gordon Keefe | 14 | Son | None | Massachusetts |
| 82 | Mary Keefe THIS PERSON | 12 | daughter | None | Massachusetts |
| 83 | Wincent Keefe | 10 | Son | None | Massachusetts |
| 84 | Bernard Keefe | 8 | Son | None | Massachusetts |
| 85 | Mary A Gray | 72 | Mother-in-law | None | England |
| 86 | Catherine Shanahan | 62 | Head | Dressmaker | Massachusetts |
| 87 | Mary E Shanahan | 60 | sister-H | None | Massachusetts |
| 88 | Edward J Devlin | 49 | Head | Laborer | Massachusetts |
| 89 | Mary M Devlin | 45 | Wife-H | None | Canada-English |
| 90 | Cecilia Devlin | 10 | daughter | None | Massachusetts |
| 91 | James Devlin | 4 | Son | None | Massachusetts |
| 92 | Edward Calahan | 50 | Head | Laborer | England |
| 93 | Agnes Calahan | 48 | Wife-H | None | England |
| 94 | John Calahan | 18 | Son | None | Massachusetts |
| 95 | James Calahan | 16 | Son | None | Massachusetts |
| 96 | Elizabeth Reese | 61 | Head-H | None | Scotland |
| 97 | Mary C Reese | 22 | daughter | Typist | Massachusetts |
| 98 | Ende Songalo | 52 | Head-H | None | Lithuania |
| 99 | Marion Songalo | 21 | daughter | Stenographer | Massachusetts |
| 100 | Anne Songalo | 15 | daughter | None | 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)