JG
John Grady — 1930 US Census Record
Model Tree available1930 United States Federal Census · Hudson, New Jersey
Our Model Tree links this John Grady across the 1910, 1920 and 1930 US Censuses in Hudson, New Jersey (XGBoost, ~Confirmed), with identified parents Elizabeth & John — first a head (b.~1898), then head of a 6-person household.
Age 32
b. ~1898
Male
Head
Born: New Jersey
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Hudson, New Jersey |
| Surname | Grady |
| Given Name | John J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | New Jersey |
| Age at First Marriage | 21 |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Additional Details | |
| Occupation | Doctor |
| Industry | Dentist |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Home Owned/Rented | WW |
| Home Value / Rent | R |
| Radio Set | 100 |
| Veteran | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Occupation | Doctor |
| Township / Ward | Jersey City |
| Est. Birth Year | ~1898 |
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 |
|---|---|---|---|---|
| Mildred Grady | Other | — | 30 | ~1900 |
| Eileen Grady | Daughter | — | 7 | ~1923 |
| John Grady | Head | — | 32 | ~1898 |
| Herbert O'Neill | Other | — | 33 | ~1897 |
| Hannah Fischer | Other | — | 22 | ~1908 |
| Phyllis Grady | Daughter | — | 4 | ~1926 |
Census Appearances
1910
Hudson, New …
Son, age 10
Hudson, New Jersey · implied b. ~1900 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Grady |
| Given Name | John |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1920
Hudson, New …
Son, age 21
Hudson, New Jersey · implied b. ~1899 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Grady |
| Given Name | John H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | New Jersey |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1930
Hudson, New …
Head, age 32
Hudson, New Jersey · implied b. ~1898 — 6 household members
| Surname | Grady |
| Given Name | John J. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 32 |
| Marital Status | Married |
| Birthplace | New Jersey |
| Age at First Marriage | 21 |
| Father's Birthplace | New Jersey |
| Mother's Birthplace | New Jersey |
| Occupation | Doctor |
| Industry | Dentist |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Home Owned/Rented | WW |
| Home Value / Rent | R |
| Radio Set | 100 |
| Veteran | 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 Grady across 3 US Census years (1910, 1920 and 1930) in Hudson, New Jersey, using XGBoost record linkage. Identified parents: mother Elizabeth Grady (~0.92 confidence) and father John Grady (~0.92 confidence) and mother Sarah Grady (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Elizabeth Grady
b. ~1869
Source mother
● Household
· direct · ~0.92
Father
John Grady
b. ~1872
Source father
● Household
· direct · ~0.92
Mother
Sarah Grady
b. ~1875
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Grady
Head · 1930 · age 32 · b. ~1898 · New Jersey
★ You are viewing this record
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:newjerseycensus00reel1381:0717)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | David E. Koffman | 43 | Head | Broker | Russia |
| 2 | Helen Koffman | 42 | Wife-H | None | Russia |
| 3 | Helen Koffman | 20 | Daughter | Teacher | New Jersey |
| 4 | Edith Koffman | 18 | Daughter | None | New Jersey |
| 5 | Sylvia Koffman | 12 | Daughter | None | New Jersey |
| 6 | Eleanor Koffman | 10 | Daughter | None | New Jersey |
| 7 | Betty Koffman | 3 | Daughter | None | South Carolina |
| 8 | — | None | — | — | — |
| 9 | — | None | — | — | — |
| 10 | — | None | — | — | — |
| 11 | Charles Brown | 37 | Head | Engineer | New Jersey |
| 12 | Anna Brown | 31 | Wife-H | None | New Jersey |
| 13 | Miriam Brown | 10 | Daughter | None | New Jersey |
| 14 | Charles Jr. Brown | 8 | Son | None | New Jersey |
| 15 | Betty Brown | 5 | Daughter | None | South Carolina |
| 16 | Mary Brown | 3 | Daughter | None | South Carolina |
| 17 | Charles E. Munn | 51 | Head | None | New Jersey |
| 18 | May F. Munn | 48 | Wife-H | None | New Jersey |
| 19 | Helen L. Munn | 25 | Daughter | Teacher | New Jersey |
| 20 | Daniel E. Munn | 22 | Son | Salesman | New Jersey |
| 21 | — | None | — | — | — |
| 22 | — | None | — | — | — |
| 23 | Louis H. Brower | 53 | Head | Manufacturer | Germany |
| 24 | Dorothy Brower | 40 | Wife-H | None | Germany |
| 25 | Louis Brower | 15 | Son | None | New Jersey |
| 26 | Irene Brower | 13 | Daughter | None | New Jersey |
| 27 | Alice Brower | 10 | Daughter | None | New Jersey |
| 28 | Alice Ciffin | 19 | Maid | Servant | Pennsylvania |
| 29 | William S. Levine | 33 | Head | Tool Maker | New York |
| 30 | — | None | — | — | — |
| 31 | — | None | — | — | — |
| 32 | 537 | None | — | — | — |
| 33 | — | None | — | — | — |
| 34 | John Schneider | 72 | Head | None | Austria |
| 35 | Anna Schneider | 66 | Wife-H | None | Austria |
| 36 | John J. Grady THIS PERSON | 32 | Head | Doctor | New Jersey |
| 37 | Mildred Grady | 30 | Wife-H | None | New York |
| 38 | Eileen Grady | 7 | Daughter | None | New Jersey |
| 39 | Phyllis Grady | 4 | Daughter | None | New Jersey |
| 40 | Herbert O'Neill | 33 | Brother-in-law | Broker | New York |
| 41 | Hannah Fischer | 22 | Maid | Servant | Germany |
| 42 | Max Kronauer | 59 | Head | Engineer | Switzerland |
| 43 | Ida Dremmer | 73 | Head | None | New Jersey |
| 44 | Mattie S. Dremmer | 45 | Daughter | Teacher | New Jersey |
| 45 | Margaret Dremmer | 41 | Daughter | Teacher | New York |
| 46 | Charles H. Beyer | 36 | Head | Manufacturer | Pennsylvania |
| 47 | Virginia Beyer | 31 | Wife-H | None | Pennsylvania |
| 48 | H. S. Beyer | 11 | Son | None | Pennsylvania |
| 49 | Florence R. Beyer | 61 | Mother-in-law | None | Virginia |
| 50 | — | None | — | — | — |
Pedigree Summary
John
Gen 1 · 3 parents
~0.92
Max depth 4 (1900–1950 window)
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)