MK
Mary Kennedy — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this Mary Kennedy across the 1920 and 1930 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed) — first a daughter (b.~1917), then head of a 13-person household.
Age 13
b. ~1917
Female
Daughter
Born: Massachusetts
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Middlesex, Massachusetts |
| Surname | Kennedy |
| Given Name | Mary H. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Newton City Part Of Ward 6 |
| Est. Birth Year | ~1917 |
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.
13 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Kelly | Daughter | — | 13 | ~1917 |
| Helen Kelly | Daughter | — | 15 | ~1915 |
| Mary Kennedy | Daughter | — | 13 | ~1917 |
| John Kelly | Head | — | 45 | ~1885 |
| Patrick Kennedy | Other | — | 45 | ~1885 |
| David Kennedy | Son | — | 9 | ~1921 |
| John Kennedy | Son | — | 11 | ~1919 |
| Frances Kennedy | Son | — | 17 | ~1913 |
| Robert Kelly | Son | — | 10 | ~1920 |
| James Kennedy | Son | — | 15 | ~1915 |
| John Kelly | Son | — | 11 | ~1919 |
| Mary Kelly | Spouse | — | 44 | ~1886 |
| Sarah Kennedy | Spouse | — | 42 | ~1888 |
Census Appearances
1920
Middlesex, Massachusetts
Daughter, age 3
Middlesex, Massachusetts · implied b. ~1917 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kennedy |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Mother Tongue | English |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Middlesex, Massachusetts
Daughter, age 13
Middlesex, Massachusetts · implied b. ~1917 — 13 household members
| Surname | Kennedy |
| Given Name | Mary H. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| 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 Kennedy across 2 US Census years (1920 and 1930) in Middlesex, Massachusetts, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Kennedy
Daughter · 1930 · age 13 · b. ~1917 · Massachusetts
★ You are viewing this record
Sibling
Frances Kennedy
Sibling · 1930 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Helen Kelly
Sibling · 1930 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Kelly
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Kennedy
Sibling · 1930 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
David Kennedy
Sibling · 1930 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mary Kelly
Sibling · 1930 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Kelly
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
James Kennedy
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 — Middlesex, Massachusetts
Open full size
1930 US Federal Census — Middlesex, Massachusetts
Page Contents
50 people indexed on this census page (ia:1930:15thcensuspopula917unit:0753)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | John J. Kelly | 45 | Head | Floor Sailor | Ireland |
| 52 | Mary A. Kelly | 44 | Wife | — | Massachusetts |
| 53 | Helen Kelly | 15 | Daughter | — | Massachusetts |
| 54 | Mary A. Kelly | 13 | Daughter | — | Massachusetts |
| 55 | John J. Kelly | 11 | Son | — | Massachusetts |
| 56 | Robert E. Kelly | 10 | Son | — | Massachusetts |
| 57 | Patrick J. Kennedy | 45 | R | Shoe Maker | Ireland |
| 58 | Sarah A. Kennedy | 42 | Wife | — | Ireland |
| 59 | Frances J. Kennedy | 17 | Son | — | Massachusetts |
| 60 | James J. Kennedy | 15 | Son | — | Massachusetts |
| 61 | Mary H. Kennedy THIS PERSON | 13 | Daughter | — | Massachusetts |
| 62 | John H. Kennedy | 11 | Son | — | Massachusetts |
| 63 | David J. Kennedy | 9 | Son | — | Massachusetts |
| 64 | Jesse L. Butterfield | 35 | Head | Loom Fixer | Massachusetts |
| 65 | Ruth H. Butterfield | 33 | Wife | — | Massachusetts |
| 66 | Shirley L. Butterfield | 11 | Daughter | — | Massachusetts |
| 67 | David L. Butterfield | 10 | Son | — | Massachusetts |
| 68 | Susan L. Butterfield | 8 | Daughter | — | Massachusetts |
| 69 | Earl J. Wilbur | 38 | Head | Specialist | Massachusetts |
| 70 | Sarah Wilbur | 37 | Wife | — | Massachusetts |
| 71 | Ruth A. Wilbur | 11 | Daughter | — | Massachusetts |
| 72 | Roland E. Wilbur | 8 | Son | — | Massachusetts |
| 73 | Alfred F. Frenier | 57 | Head | Agent | Connecticut |
| 74 | Alice G. Frenier | 59 | Wife | — | Massachusetts |
| 75 | Michael A. Mcclusk | 55 | Head | Laborer | Poland |
| 76 | Josephine Mcclusk | 48 | Wife | — | Poland |
| 77 | Stanley Mcclusk | 24 | Son | Laborer | Massachusetts |
| 78 | Janet S. Mcclusk | 21 | Daughter-in-law | — | Massachusetts |
| 79 | Donald S. Mcclusk | 4 | Grandson | — | Massachusetts |
| 80 | Helen E. Mcclusk | 17 | Daughter | Floor Lady | Massachusetts |
| 81 | Edward S. Mcclusk | 14 | Son | — | Massachusetts |
| 82 | John H. Bridgeford | 73 | Head | — | England |
| 83 | Sarah A. Bridgeford | 71 | Wife | — | England |
| 84 | Ernest Bridgeford | 50 | Son | Printing Pressman | Massachusetts |
| 85 | Alice Bridgeford | 41 | Daughter-in-law | — | Vermont |
| 86 | Alice Bridgeford | 5 | Granddaughter | — | Maine |
| 87 | Leora R. Bishop | 14 | Boarder | — | Massachusetts |
| 88 | John L. Spencer | 23 | Boarder | — | Massachusetts |
| 89 | Carl Woodcock | 20 | Boarder | Laborer | Connecticut |
| 90 | James Mcclusky | 52 | Head | Iron Worker | Ireland |
| 91 | Annie M. Mcclusky | 52 | Wife | — | Scotland |
| 92 | Albert W. Prince | 39 | Head | Agent | Massachusetts |
| 93 | Marie E. Prince | 38 | Wife | — | Massachusetts |
| 94 | Shirley Prince | 14 | Daughter | — | Massachusetts |
| 95 | Janet E. Prince | 12 | Daughter | — | Massachusetts |
| 96 | Thomas Mcnamara | 57 | Head | Slasher Tender | Massachusetts |
| 97 | Annie G. Mcnamara | 57 | Wife | — | Massachusetts |
| 98 | Thomas J. Mcnamara | 23 | Son | — | Massachusetts |
| 99 | James Power | 45 | Head | Truck Driver | Ireland |
| 100 | Annie Power | 41 | Wife | — | Ireland |
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)