JT
John Tracy — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Mercer, New Jersey
Our Model Tree links this John Tracy across the 1920 and 1930 US Censuses in Mercer, New Jersey (XGBoost, ~Confirmed) — first a head (b.~1864), then head of a 6-person household.
Age 66
b. ~1864
Male
Head
Born: New Jersey
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Mercer, New Jersey |
| Surname | Tracy |
| Given Name | John J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 66 |
| Marital Status | Married |
| Birthplace | New Jersey |
| Age at First Marriage | 30 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Additional Details | |
| Occupation | Cluster man |
| Industry | Steel Mill |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 6500 |
| Radio Set | R |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Occupation | Cluster Man |
| Township / Ward | Trenton City |
| Est. Birth Year | ~1864 |
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.
6 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Stephen Tracy | Son | — | 33 | ~1897 |
| John Tracy | Head | — | 66 | ~1864 |
| Mary Tracy | Spouse | — | 66 | ~1864 |
| Mary Sheridan | Daughter | — | 30 | ~1900 |
| Agustine Tracy | Son | — | 27 | ~1903 |
| Loretta Tracy | Daughter | — | 23 | ~1907 |
Census Appearances
1920
Mercer, New …
Head, age 56
Mercer, New Jersey · implied b. ~1864 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Tracy |
| Given Name | John J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 56 |
| Marital Status | Married |
| Birthplace | New Jersey |
| Father's Birthplace | Ireland |
| Mother's Birthplace | Ireland |
| Occupation | Ware Tester |
| Industry | Wire Mill |
| Class of Worker | W |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Mother Tongue | Irish |
| Home Owned/Rented | O |
| Home Free/Mortgaged | M |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1930
Mercer, New …
Head, age 66
Mercer, New Jersey · implied b. ~1864 — 6 household members
| Surname | Tracy |
| Given Name | John J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 66 |
| Marital Status | Married |
| Birthplace | New Jersey |
| Age at First Marriage | 30 |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Occupation | Cluster man |
| Industry | Steel Mill |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | O |
| Home Value / Rent | 6500 |
| Radio Set | R |
| 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 Tracy across 2 US Census years (1920 and 1930) in Mercer, New Jersey, using XGBoost record linkage.
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This person
Anchor record
John Tracy
Head · 1930 · age 66 · b. ~1864 · New Jersey
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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 — Mercer, New Jersey
Open full size
1930 US Federal Census — Mercer, New Jersey
Page Contents
40 people indexed on this census page (ia:1930:newjerseycensus00reel1365:0086)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Evelyn Hyde | 7 | daughter | — | New Jersey |
| 2 | Harry H. Dobbins | 44 | Head | Brakeman | New Jersey |
| 3 | Nellie G. Dobbins | 44 | wife | — | New Jersey |
| 4 | Marion M. Dobbins | 16 | daughter | — | New Jersey |
| 5 | Helen G. Dobbins | 13 | daughter | — | New Jersey |
| 6 | Elizabeth Dobbins | 8 | daughter | — | New Jersey |
| 7 | Robert Dobbins | 12 | son | — | New Jersey |
| 8 | Estella M. Casgrale | 22 | daughter | — | New Jersey |
| 9 | Thomas Holford | 39 | Head | Chemist | England |
| 10 | Mary H. Holford | 37 | wife | — | England |
| 11 | Hugh J. Macaulay | 35 | Head | Mold Maker | Ohio |
| 12 | Gertrude Macaulay | 36 | wife | — | England |
| 13 | Hugh C. Macaulay | 11 | son | — | New Jersey |
| 14 | Jack Macaulay | 4 | son | — | New Jersey |
| 15 | Theodore Schaefer | 31 | Head | Pattern Maker | New Jersey |
| 16 | Caroline Schaefer | 26 | wife | — | New Jersey |
| 17 | Theodore Jr. Schaefer | 2 | son | — | New Jersey |
| 18 | Cyril Batz | 31 | Head | Proprietor | England |
| 19 | Mary H. H. Batz | 25 | wife | — | New Jersey |
| 20 | Dorothy H. Batz | 3 | daughter | — | New Jersey |
| 21 | Rebecca E. Matthews | 57 | mother-in-law | Dressmaker | Virginia |
| 22 | C. Edward Matthews | 19 | brother-in-law | Timekeeper | New Jersey |
| 23 | Frank Capewell | 46 | Head | Head Janitor | England |
| 24 | Ethel E. H. Capewell | 33 | wife | Boarding House | New Jersey |
| 25 | John J. Capewell | 10 | son | — | New Jersey |
| 26 | William Lytell | 7 | boarder | — | New Jersey |
| 27 | Elizabeth Fallon | 13 | boarder | — | New Jersey |
| 28 | Francis J. Parr | 35 | Head | Policeman | New Jersey |
| 29 | Gladys V. Parr | 36 | wife | — | Maryland |
| 30 | Francis J. Jr. Parr | 7 | son | — | New Jersey |
| 31 | Elwood L. Wahl | 34 | Head | Superintendent | Pennsylvania |
| 32 | Frances E. H. Wahl | 33 | wife | — | Pennsylvania |
| 33 | Richard M. Wahl | 8 | son | — | Pennsylvania |
| 34 | Bertha M. H. Zwerling | 46 | Head | — | New Jersey |
| 35 | John J. Tracy THIS PERSON | 66 | Head | Cluster Man | New Jersey |
| 36 | Mary C. H. Tracy | 66 | wife | — | New Jersey |
| 37 | Stephen J. Tracy | 33 | son | Fireman | New Jersey |
| 38 | Agustine J. Tracy | 27 | son | Policeman | New Jersey |
| 39 | Loretta C. Tracy | 23 | daughter | Operator | New Jersey |
| 40 | Mary G. Sheridan | 30 | daughter | Stenographer | 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)