MK
Mary Kelley — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Middlesex, Massachusetts
Our Model Tree links this Mary Kelley across the 1930 and 1940 US Censuses in Middlesex, Massachusetts (XGBoost, ~Confirmed) — first a head (b.~1886), then head of a 10-person household.
Age 44
b. ~1886
Female
Head
Born: Massachusetts
Widowed
1930 Census Record Details
| Census Year | 1930 |
| Location | Middlesex, Massachusetts |
| Surname | Kelley |
| Given Name | Mary L. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Widowed |
| Birthplace | Massachusetts |
| Age at First Marriage | 23 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Additional Details | |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 35 |
| Radio Set | R |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Township / Ward | Winchester Town |
| Est. Birth Year | ~1886 |
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.
10 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Grace Kelley | Daughter | — | 13 | ~1917 |
| Gertrude Kelley | Daughter | — | 12 | ~1918 |
| Mary Kelley | Head | — | 44 | ~1886 |
| Lester Kelley | Son | — | 19 | ~1911 |
| Thomas Kelley | Son | — | 16 | ~1914 |
| Clarence Kelley | Son | — | 8 | ~1922 |
| Lawrence Kelley | Son | — | 9 | ~1921 |
| Robert Kelley | Son | — | 11 | ~1919 |
| John Kelley | Son | — | 18 | ~1912 |
| Melvin Kelley | Son | — | 7 | ~1923 |
Census Appearances
1930
Middlesex, Massachusetts
Head, age 44
Middlesex, Massachusetts · implied b. ~1886 — 10 household members
| Surname | Kelley |
| Given Name | Mary L. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 44 |
| Marital Status | Widowed |
| Birthplace | Massachusetts |
| Age at First Marriage | 23 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 35 |
| Radio Set | R |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Middlesex-County, Massachusetts
Head, age 54
Middlesex-County, Massachusetts · implied b. ~1886 — 11 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Kelly |
| Given Name | Mary L. |
| Relationship to Head | Head |
| Sex | F |
| Color / Race | White |
| Age | 54 |
| Marital Status | Widowed |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Winchester |
| 1935 Residence (County) | Middlesex |
| Occupation | no |
| Industry | no |
| Class of Worker | no |
| Income (1939) | 0 |
| Highest Grade | No 8 |
| 1935 Residence | Massachusetts |
| 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 Kelley across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Kelley
Head · 1930 · age 44 · b. ~1886 · Massachusetts
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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:massachusettscensus00reel932:0420)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | William L. Flynn | 27 | Head | Chauffeur | Massachusetts |
| 52 | Norah L. Flynn | 28 | Wife | — | Irish Free State |
| 53 | Anna M. Flynn | 5 | Daughter | — | Massachusetts |
| 54 | John B. Flynn | 2 | Son | — | Massachusetts |
| 55 | Robert L. Flynn | 0 | Son | — | Massachusetts |
| 56 | Mary T. Green | 35 | Sister-in-law | Housework | Irish Free State |
| 57 | Thomas J. Drapeau | 27 | Head | Janitor | New Hampshire |
| 58 | Mary D. Drapeau | 31 | Wife | — | Irish Free State |
| 59 | Thomas C. Drapeau | 1 | Son | — | Massachusetts |
| 60 | Robert Gallant | 8 | Lodger | — | U. S. |
| 61 | Thomas M. Kelley | 46 | Head | — | Massachusetts |
| 62 | Christina J. Kelley | 34 | Wife | — | Canada English |
| 63 | Winifred F. Kelley | 11 | Daughter | — | Massachusetts |
| 64 | Mary E. Kelley | 10 | Daughter | — | Massachusetts |
| 65 | Thomas R. Jr. Kelley | 8 | Son | — | Massachusetts |
| 66 | Harold Kelley | 6 | Son | — | Massachusetts |
| 67 | Francis L. Kelley | 4 | Daughter | — | Massachusetts |
| 68 | Mary L. Kelley THIS PERSON | 44 | Head | — | Massachusetts |
| 69 | Lester C. Kelley | 19 | Son | — | Massachusetts |
| 70 | John F. Jr. Kelley | 18 | Son | — | Massachusetts |
| 71 | Thomas E. Kelley | 16 | Son | Hand Boy | Massachusetts |
| 72 | Grace M. Kelley | 13 | Daughter | — | Massachusetts |
| 73 | Gertrude L. Kelley | 12 | Daughter | — | Massachusetts |
| 74 | Robert E. Kelley | 11 | Son | — | Massachusetts |
| 75 | Lawrence J. Kelley | 9 | Son | — | Massachusetts |
| 76 | Clarence J. Kelley | 8 | Son | — | Massachusetts |
| 77 | Melvin M. Kelley | 7 | Son | — | Massachusetts |
| 78 | Windsor R. Robinson | 31 | Head | Mechanic | Canada English |
| 79 | Mary G. Robinson | 29 | Wife | — | Massachusetts |
| 80 | Annette G. Thornton | 2 | Stepdaughter | — | Massachusetts |
| 81 | Alice H. Lamb | 17 | Boarder | Mother'S Helper | Massachusetts |
| 82 | Henry Brown | 29 | Head | Chauffeur | Massachusetts |
| 83 | Sadie Brown | 26 | Wife | — | Massachusetts |
| 84 | Guy F. Merenda | 25 | Head | Shoe Dyer | Italy |
| 85 | Frances Merenda | 15 | Wife | — | Massachusetts |
| 86 | Charles F. Merenda | 2 | Son | — | Massachusetts |
| 87 | Alexander S. Marr | 30 | Head | Manager | Scotland |
| 88 | Alice G. Marr | 30 | Wife | — | Scotland |
| 89 | George A. Marr | 2 | Son | — | Massachusetts |
| 90 | John H. Hogan | 39 | Head | Officer | Massachusetts |
| 91 | Josephine L. Hogan | 40 | Wife | — | Massachusetts |
| 92 | John Carroll | 63 | Head | Foreman | Irish Free State |
| 93 | Catherine Carroll | 55 | Wife | — | Irish Free State |
| 94 | Mary E. Carroll | 36 | Daughter | Stitch Hand | Massachusetts |
| 95 | Frances C. Carroll | 27 | Daughter | Operator | Massachusetts |
| 96 | Rose G. Carroll | 23 | Daughter | Operator | Massachusetts |
| 97 | Anthony G. Carroll | 20 | Son | Chauffeur | Massachusetts |
| 98 | William J. Carroll | 19 | Son | Gardener | Massachusetts |
| 99 | Charles E. Carroll | 17 | Son | None | Massachusetts |
| 100 | Eleanor Carroll | 10 | 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)