JL
John Leahy — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Hudson, New Jersey
Our Model Tree links this John Leahy across the 1920 and 1930 US Censuses in Hudson, New Jersey (XGBoost, ~Confirmed) — first a son (b.~1913), then head of a 8-person household.
Age 17
b. ~1913
Male
Son
Born: New Jersey
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Hudson, New Jersey |
| Surname | Leahy |
| Given Name | John Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Additional Details | |
| Occupation | Tel. Operator |
| Industry | Steam Ship |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Occupation | Tel. Operator |
| Township / Ward | Hoboken City |
| 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.
8 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Anna Leahy | Other | — | 40 | ~1890 |
| Francis Leahy | Son | — | 14 | ~1916 |
| John Leahy | Son | — | 17 | ~1913 |
| William Leahy | Son | — | 1 | ~1929 |
| Nicholas Leahy | Son | — | 5 | ~1925 |
| Elizabeth Leahy | Daughter | — | 10 | ~1920 |
| John Leahy | Head | — | 41 | ~1889 |
| Elizabeth Lincoln | Other | — | 67 | ~1863 |
Census Appearances
1920
Hudson, New …
Son, age 7
Hudson, New Jersey · implied b. ~1913 — 5 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Leahy |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1930
Hudson, New …
Son, age 17
Hudson, New Jersey · implied b. ~1913 — 8 household members
| Surname | Leahy |
| Given Name | John Jr. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Occupation | Tel. Operator |
| Industry | Steam Ship |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
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 Leahy across 2 US Census years (1920 and 1930) in Hudson, New Jersey, using XGBoost record linkage.
Show:
This person
Anchor record
John Leahy
Son · 1930 · age 17 · b. ~1913 · New Jersey
★ You are viewing this record
Sibling
William Leahy
Sibling · 1930 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elizabeth Leahy
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Francis Leahy
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Nicholas Leahy
Sibling · 1930 · age 5
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 — Hudson, New Jersey
Open full size
1930 US Federal Census — Hudson, New Jersey
Page Contents
50 people indexed on this census page (ia:1930:newjerseycensus00reel1349:0897)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Edward Hayes | 24 | Head | Pipe-Fitter | New Jersey |
| 2 | Helen Hayes | 18 | Wife-H | — | New Jersey |
| 3 | Pauline Nolte | 43 | Head-HR | Housekeeper | Germany |
| 4 | Frieda Helda Nolte | 10 | Daughter | — | Germany |
| 5 | Sven Mossige | 26 | Head | Rigger | Norway |
| 6 | Selma Mossige | 22 | Wife-H | — | Norway |
| 7 | Erling Mossige | 3 | Daughter | — | Norway |
| 8 | Charles Meyer | 42 | Head | Auto Mechanic | New Jersey |
| 9 | Otto Johanness | 36 | Head | Laborer | Germany |
| 10 | Rose Johanness | 34 | Wife-H | — | Jugo-Slavia |
| 11 | Frank Johanness | 9 | Son | — | New Jersey |
| 12 | John J. Leahy | 41 | Head | Special Officer | New Jersey |
| 13 | Anna E. Leahy | 40 | Wife-H | — | New Jersey |
| 14 | John Jr. Leahy THIS PERSON | 17 | Son | Tel. Operator | New Jersey |
| 15 | Francis Leahy | 14 | Son | — | New Jersey |
| 16 | Elizabeth Leahy | 10 | Daughter | — | New Jersey |
| 17 | Nicholas Leahy | 5 | Son | — | New Jersey |
| 18 | William Leahy | 1 | Son | — | New Jersey |
| 19 | Elizabeth Lincoln | 67 | Mother-in-law | — | New Jersey |
| 20 | Albert Hochbaum | 44 | Head | Proprietor | New Jersey |
| 21 | Josephine Hochbaum | 37 | Wife-H | — | New Jersey |
| 22 | Theodore Hochbaum | 19 | Son | Chauffeur | New Jersey |
| 23 | Alfred Hochbaum | 15 | Son | Clerk | New Jersey |
| 24 | Teresa Hochbaum | 10 | Daughter | — | New Jersey |
| 25 | Andrew Farraro | 31 | Head | Chauffeur | Italy |
| 26 | Martha Farraro | 31 | Wife-H | — | Italy |
| 27 | Philomena Farraro | 6 | Daughter | — | New Jersey |
| 28 | Veronica Farraro | 4 | Daughter | — | New Jersey |
| 29 | Frank Farraro | 3 | Son | — | New Jersey |
| 30 | Anthony Farraro | 2 | Son | — | New Jersey |
| 31 | Frank | 52 | Head | Trackman | Italy |
| 32 | Lucy | 43 | Wife-H | — | Italy |
| 33 | Charles Yates | 32 | Head | Teamster | New Jersey |
| 34 | Margaret Mansfield | 49 | Housekeeper | Housekeeper | New Jersey |
| 35 | Peter Brucha | 35 | Lodger | Window Cleaner | Germany |
| 36 | Giuseppe Ferrante | 33 | Lodger | Laborer | Italy |
| 37 | Peter Schalfant | 26 | Lodger | Window Cleaner | Holland |
| 38 | George Sherman | 56 | Lodger | Longshoreman | Denmark |
| 39 | Peter Clark | 56 | Head | Watchman | Germany |
| 40 | Richard Remlen | 54 | Head | Proprietor | Oregon |
| 41 | Caroline Remlen | 44 | Wife-H | — | England |
| 42 | William Emmer | 44 | Head | Teamster | New Jersey |
| 43 | Mary Emmer | 50 | Head-H | — | New York |
| 44 | Thomas Emmer | 17 | Son | Driver'S Helper | New Jersey |
| 45 | William Emmer | 15 | Son | Mac. Helper | New Jersey |
| 46 | George Emmer | 12 | Son | — | New Jersey |
| 47 | Frances Emmer | 10 | Daughter | — | New Jersey |
| 48 | Edward Emmer | 6 | Son | — | New Jersey |
| 49 | Albert E. Thomas | 52 | Head | Proprietor | Germany |
| 50 | Henrietta Thomas | 47 | Wife-H | Proprietor | Austria |
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)