MG
Mary Grady — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Luzerne, Pennsylvania
Our Model Tree links this Mary Grady across the 1930 and 1940 US Censuses in Luzerne, Pennsylvania (XGBoost, ~Confirmed) — first a daughter (b.~1930), then head of a 8-person household.
Age 0
b. ~1930
Female
Daughter
Born: Pennsylvania
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Luzerne, Pennsylvania |
| Surname | Grady |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Additional Details | |
| Can Read/Write | No |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Township / Ward | Hanover Township Preston |
| Est. Birth Year | ~1930 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Catherine Grady | Daughter | — | 6 | ~1924 |
| John Grady | Son | — | 8 | ~1922 |
| James Grady | Son | — | 2 | ~1928 |
| Mary Grady | Daughter | — | ~1930 | |
| Ellen Grady | Daughter | — | 10 | ~1920 |
| Mary Grady | Other | — | 32 | ~1898 |
| James Grady | Head | — | 38 | ~1892 |
| Alice Grady | Daughter | — | 5 | ~1925 |
Census Appearances
1930
Luzerne, Pennsylvania
Daughter, age
Luzerne, Pennsylvania · implied b. ~1930 — 8 household members
| Surname | Grady |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 0 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Irish Free State |
| Mother's Birthplace | Irish Free State |
| Can Read/Write | No |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Luzerne-County, Pennsylvania
Daughter, age 10
Luzerne-County, Pennsylvania · implied b. ~1930
●
Primary link
· ~Confirmed · 1 source
XGBoost
| Surname | Grady |
| Given Name | Margaret |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 10 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Wilkes-Barre City |
| 1935 Residence (County) | Luzerne |
| Highest Grade | No 4 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
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 Mary Grady across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Grady
Daughter · 1930 · age 0 · b. ~1930 · Pennsylvania
★ You are viewing this record
Sibling
James Grady
Sibling · 1930 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ellen Grady
Sibling · 1930 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Catherine Grady
Sibling · 1930 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Grady
Sibling · 1930 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Alice Grady
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 — Luzerne, Pennsylvania
Open full size
1930 US Federal Census — Luzerne, Pennsylvania
Page Contents
50 people indexed on this census page (ia:1930:fifteenthcensus00reel2067:0872)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Kathaline Cooney | 11 | Daughter | — | Pennsylvania |
| 2 | Beatrice Cooney | 9 | Daughter | — | Pennsylvania |
| 3 | John J. Boyle | 56 | Head | Coal Mine | Pennsylvania |
| 4 | Elizabeth Boyle | 50 | Wife-H | — | Pennsylvania |
| 5 | John Boyle | 25 | Son | Labor | Pennsylvania |
| 6 | William Boyle | 24 | Son | Labor | Pennsylvania |
| 7 | Hannah Boyle | 21 | Daughter | — | Pennsylvania |
| 8 | Michael Boyle | 19 | Son | Labor | Pennsylvania |
| 9 | James Boyle | 15 | Son | — | Pennsylvania |
| 10 | Rose Boyle | 10 | Daughter | — | Pennsylvania |
| 11 | James Grady | 38 | Head | Labor | Irish Free State |
| 12 | Mary Grady | 32 | Wife-H | — | Irish Free State |
| 13 | Ellen Grady | 10 | Daughter | — | Pennsylvania |
| 14 | John Grady | 8 | Son | — | Pennsylvania |
| 15 | Catherine Grady | 6 | Daughter | — | Pennsylvania |
| 16 | Alice Grady | 5 | Daughter | — | Pennsylvania |
| 17 | James Grady | 2 | Son | — | Pennsylvania |
| 18 | Mary Grady THIS PERSON | 0 | Daughter | — | Pennsylvania |
| 19 | John Carlin | 50 | Head | Labor | Pennsylvania |
| 20 | Catherine Carlin | 51 | Wife-H | — | Pennsylvania |
| 21 | Ellen Carlin | 16 | Daughter | — | Pennsylvania |
| 22 | John Carlin | 13 | Son | — | Pennsylvania |
| 23 | Andrew Carlin | 10 | Son | — | Pennsylvania |
| 24 | James J. Mcdonel | 57 | Head | Janitor | Pennsylvania |
| 25 | Mary Mcdonel | 85 | Mother | — | Irish Free State |
| 26 | Charles Mcdonel | 22 | Son | Labor | Pennsylvania |
| 27 | Hugh Jones | 31 | Head | Fireboss | Pennsylvania |
| 28 | Ida Jones | 24 | Wife-H | — | Vermont |
| 29 | Hubert Jones | 5 | Son | — | Pennsylvania |
| 30 | George Jones | 1 | Son | — | Pennsylvania |
| 31 | Blondie Brallia | 46 | Head | Labor | Pennsylvania |
| 32 | John Brallia | 35 | Brother | Labor | Pennsylvania |
| 33 | Thomas Brallia | 34 | Brother | Labor | Pennsylvania |
| 34 | Nellie Brallia | 32 | Sister-H | Teacher | Pennsylvania |
| 35 | Daniel Brallia | 29 | Head | Labor | Pennsylvania |
| 36 | Teresa Brallia | 25 | Wife-H | — | Pennsylvania |
| 37 | Mary E. Brallia | 3 | Daughter | — | Pennsylvania |
| 38 | Charles Brallia | 1 | Son | — | Pennsylvania |
| 39 | Elizabeth Murphy | 57 | Mother-Head | — | Pennsylvania |
| 40 | John Murphy | 31 | Son | Labor | Pennsylvania |
| 41 | Patrick Murphy | 19 | Son | Labor | Pennsylvania |
| 42 | John Benjamin | 21 | Son-in-law | Labor | Pennsylvania |
| 43 | Ellen Benjamin | 22 | Wife | — | Pennsylvania |
| 44 | Bernard Shovlin | 50 | Head | Labor | Pennsylvania |
| 45 | Sabina Shovlin | 49 | Wife-H | — | Pennsylvania |
| 46 | Richard Shovlin | 23 | Son | Labor | Pennsylvania |
| 47 | Mary Shovlin | 20 | Daughter | — | Pennsylvania |
| 48 | Robert Shovlin | 18 | Daughter | — | Pennsylvania |
| 49 | Elizabeth Shovlin | 15 | Daughter | — | Pennsylvania |
| 50 | Louis Shovlin | 11 | Son | — | Pennsylvania |
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)