JF
John Flaherty — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Suffolk, Massachusetts
Our Model Tree links this John Flaherty across the 1920 and 1930 US Censuses in Suffolk, Massachusetts (XGBoost, ~Confirmed) — first a son (b.~1913), then head of a 9-person household.
Age 17
b. ~1913
Male
Son
Born: Massachusetts
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Suffolk, Massachusetts |
| Surname | Flaherty |
| Given Name | John J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Massachusetts |
| Additional Details | |
| Occupation | Laborer |
| Industry | Office |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Laborer |
| Township / Ward | South Boston |
| Est. Birth Year | ~1913 |
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.
9 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Margaret Flaherty | Daughter | — | 13 | ~1917 |
| Raymond Flaherty | Son | — | 10 | ~1920 |
| Mary Flaherty | Other | — | 40 | ~1890 |
| Mildred Flaherty | Daughter | — | 4 | ~1926 |
| Evelyn Flaherty | Daughter | — | ~1930 | |
| John Flaherty | Son | — | 17 | ~1913 |
| Mary Flaherty | Daughter | — | 6 | ~1924 |
| Patrick Flaherty | Head | — | 39 | ~1891 |
| Dorothy Flaherty | Daughter | — | 2 | ~1928 |
Census Appearances
1920
Suffolk, Massachusetts
Son, age 7
Suffolk, Massachusetts · implied b. ~1913 — 3 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Flaherty |
| Given Name | John J |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Suffolk, Massachusetts
Son, age 17
Suffolk, Massachusetts · implied b. ~1913 — 9 household members
| Surname | Flaherty |
| Given Name | John J. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Massachusetts |
| Occupation | Laborer |
| Industry | Office |
| 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 John Flaherty across 2 US Census years (1920 and 1930) in Suffolk, Massachusetts, using XGBoost record linkage.
Show:
This person
Anchor record
John Flaherty
Son · 1930 · age 17 · b. ~1913 · Massachusetts
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Sibling
Mary Flaherty
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Dorothy Flaherty
Sibling · 1930 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Margaret Flaherty
Sibling · 1930 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Evelyn Flaherty
Sibling · 1930 · age
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Mildred Flaherty
Sibling · 1930 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Raymond Flaherty
Sibling · 1930 · age 10
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 — Suffolk, Massachusetts
Open full size
1930 US Federal Census — Suffolk, Massachusetts
Page Contents
39 people indexed on this census page (ia:1930:massachusettscensus00reel946:0387)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Timothy Sullivan | 44 | Head | Machinist | Massachusetts |
| 52 | Mary Sullivan | 46 | Wife-H | — | Massachusetts |
| 53 | Gertrude Sullivan | 15 | Daughter | — | Massachusetts |
| 54 | Edward Sullivan | 14 | Son | — | Massachusetts |
| 55 | Joseph Jackavonis | 37 | Head | Molder | Russia Lithu |
| 56 | Molly Jackavonis | 39 | Wife-H | — | Russia Lithu |
| 57 | Albert Jackavonis | 13 | Son | — | Massachusetts |
| 58 | Joseph Jackavonis | 11 | Son | — | Massachusetts |
| 59 | Bronail Jackavonis | 6 | Son | — | Massachusetts |
| 61 | Con Sullivan | 58 | Head | Laborer | Ireland FS |
| 62 | Mary Sullivan | 48 | Wife-H | Saleswoman | Ireland FS |
| 63 | Timothy Sullivan | 18 | Son | — | Massachusetts |
| 64 | Patrick Flaherty | 39 | Head | Machinist | Pennsylvania |
| 65 | Mary E. Flaherty | 40 | Wife-H | — | Massachusetts |
| 66 | John J. Flaherty THIS PERSON | 17 | Son | Laborer | Massachusetts |
| 67 | Margaret Flaherty | 13 | Daughter | — | Massachusetts |
| 68 | Raymond Flaherty | 10 | Son | — | Massachusetts |
| 69 | Mary Flaherty | 6 | Daughter | — | Massachusetts |
| 70 | Mildred Flaherty | 4 | Daughter | — | Massachusetts |
| 71 | Dorothy Flaherty | 2 | Daughter | — | Massachusetts |
| 72 | Evelyn Flaherty | 0 | Daughter | — | Massachusetts |
| 73 | Stephen Kozak | 37 | Head | Laborer | Russia |
| 74 | Antonet Kozak | 49 | Wife-H | — | Russia Lithu |
| 75 | Ronald Kozak | 18 | Son step | — | Massachusetts |
| 76 | Gertrude S. Kozak | 15 | Daughter | — | Massachusetts |
| 77 | Stanley Kozak | 12 | Son step | — | Massachusetts |
| 78 | Mary Kozak | 7 | Daughter | — | Massachusetts |
| 79 | Elizabeth Klamka | 40 | Head-H | — | Russia Lithu |
| 80 | Charles Klamka | 19 | Son | — | Massachusetts |
| 81 | Beatrix Klamka | 17 | Daughter | Operator | Massachusetts |
| 82 | Stella Klamka | 14 | Daughter | — | Massachusetts |
| 83 | Thomas Adrisq | 35 | Lodger | Laborer | Russia Lithu |
| 84 | Bernard O'Donnell | 35 | Head | Cutter | Massachusetts |
| 85 | Mary O'Donnell | 28 | Wife-H | — | Massachusetts |
| 86 | John O'Donnell | 9 | Son | — | Massachusetts |
| 87 | Bernard Jr. O'Donnell | 4 | Son | — | Massachusetts |
| 88 | Margaret Conley | 55 | Head-H | — | Ireland FS |
| 89 | John Conley | 27 | Son | — | Massachusetts |
| 90 | Martin Conley | 23 | Son | Chauffeur | 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)