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William Hahn — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Union, New Jersey
Our Model Tree links this William Hahn across the 1920 and 1930 US Censuses in Union, 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 | Union, New Jersey |
| Surname | Hahn |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Additional Details | |
| Can Read/Write | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Township / Ward | Summit 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 William | Age | Birth yr |
|---|---|---|---|---|
| Leah Hahn | Other | — | 79 | ~1851 |
| Paul Hahn | Head | — | 54 | ~1876 |
| Paul Hahn | Son | — | 9 | ~1921 |
| Erna Hahn | Daughter | — | 19 | ~1911 |
| Rita Hahn | Daughter | — | 14 | ~1916 |
| Herman Hardt | Other | — | 70 | ~1860 |
| William Hahn | Son | — | 17 | ~1913 |
| William Hardt | Other | — | 26 | ~1904 |
Census Appearances
1920
Union, New …
Son, age 7
Union, New Jersey · implied b. ~1913 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Hahn |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 7 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1930
Union, New …
Son, age 17
Union, New Jersey · implied b. ~1913 — 8 household members
| Surname | Hahn |
| Given Name | William |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 17 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | Germany |
| Mother's Birthplace | Germany |
| 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 William Hahn across 2 US Census years (1920 and 1930) in Union, New Jersey, using XGBoost record linkage.
Show:
This person
Anchor record
William Hahn
Son · 1930 · age 17 · b. ~1913 · New Jersey
★ You are viewing this record
Sibling
Rita Hahn
Sibling · 1930 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paul Hahn
Sibling · 1930 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Erna Hahn
Sibling · 1930 · age 19
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 — Union, New Jersey
Open full size
1930 US Federal Census — Union, New Jersey
Page Contents
50 people indexed on this census page (ia:1930:newjerseycensus00reel1389:1069)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 51 | Ella Roelf | 53 | Wife-H | — | Germany |
| 52 | William Roelf | 32 | Son | Truck Driver | New Jersey |
| 53 | Paul Hahn | 54 | Head | Mail Carrier | Germany |
| 54 | Erna G. Hahn | 19 | Daughter | Clerk | New Jersey |
| 55 | William Hahn THIS PERSON | 17 | Son | — | New Jersey |
| 56 | Rita Hahn | 14 | Daughter | — | New Jersey |
| 57 | Paul Hahn | 9 | Son | — | New Jersey |
| 58 | Herman Hardt | 70 | Father-in-law | Laborer | Germany |
| 59 | William Hardt | 26 | Brother-in-law | — | New Jersey |
| 60 | Leah Hahn | 79 | Mother | — | Germany |
| 61 | John Parquilo | 63 | Head | Junk Dealer | Italy |
| 62 | Mary M. Parquilo | 61 | Wife-H | — | Italy |
| 63 | Rose M. Parquilo | 26 | Daughter | Typist | New Jersey |
| 64 | Anna I. Parquilo | 24 | Daughter | — | New Jersey |
| 65 | Josephine M. Parquilo | 21 | Daughter | Typist | New Jersey |
| 66 | Angelina A. Parquilo | 18 | Daughter | Typist | New Jersey |
| 67 | Louis J. Parquilo | 35 | Head | Auto Wrecker | New Jersey |
| 68 | Grace Parquilo | 33 | Wife-H | — | Italy |
| 69 | John Parquilo | 8 | Son | — | New Jersey |
| 70 | Mary M. Parquilo | 6 | Daughter | — | New Jersey |
| 71 | Elvera Parquilo | 4 | Daughter | — | New Jersey |
| 72 | Elizabeth Parquilo | 2 | Daughter | — | New Jersey |
| 73 | Rose Parquilo | 1 | Daughter | — | New Jersey |
| 74 | Albert G. Dennis | 46 | Head | Publisher | New Jersey |
| 75 | Alice M. Dennis | 45 | Wife-H | — | New York |
| 76 | Millicent Dennis | 16 | Daughter | — | New Jersey |
| 77 | Kenneth R. Dennis | 14 | Son | — | New Jersey |
| 78 | Adam Pruffen | 58 | Head | Merchant | Massachusetts |
| 79 | Nellie A. Pruffen | 53 | Wife-H | — | Connecticut |
| 80 | Dana A. Pruffen | 25 | Son | Engineer | New York |
| 81 | Doris A. Pruffen | 22 | Daughter | Secretary | New York |
| 82 | George Stercken | 47 | Head | Electrical | New Jersey |
| 83 | Ethel W. Stercken | 45 | Wife-H | — | England |
| 84 | Georgia W. Stercken | 20 | Daughter | — | Massachusetts |
| 85 | Webster S. Stercken | 10 | Son | — | New Jersey |
| 86 | Audrey D. Smith | 40 | Head | Nurse | Canada-English |
| 87 | Jeffrey Smith | 12 | Son | — | New Jersey |
| 88 | Barbara R. Smith | 10 | Daughter | — | New Jersey |
| 89 | Margaret E. Frith | 68 | Mother | — | Canada-English |
| 90 | Richard Mcguinness | 36 | Head | Salesman | New York |
| 91 | Ethel Mcguinness | 35 | Wife-H | — | New York |
| 92 | Elizabeth Mcguinness | 13 | Daughter | — | New Jersey |
| 93 | Ruth Mcguinness | 11 | Daughter | — | New Jersey |
| 94 | Joan Mcguinness | 4 | Daughter | — | New York |
| 95 | Charles R. Morton | 39 | Head | Broker | New York |
| 96 | Lillian Morton | 38 | Wife-H | — | New York |
| 97 | Lillian Morton | 15 | Daughter | — | New Jersey |
| 98 | Dorothy Morton | 15 | Daughter | — | New Jersey |
| 99 | Charles R. Jr. Morton | 10 | Son | — | New Jersey |
| 100 | Richard E. Morton | 5 | Son | — | New Jersey |
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)