JG
John Griffith — 1930 US Census Record
Model Tree available1930 United States Federal Census · Luzerne, Pennsylvania
Our Model Tree links this John Griffith across the 1910, 1920 and 1930 US Censuses in Luzerne, Pennsylvania (XGBoost, ~Confirmed), with identified parents James & William — first a son (b.~1891), then head of a 4-person household.
Age 39
b. ~1891
Male
Son
Born: Pennsylvania
Single
1930 Census Record Details
| Census Year | 1930 |
| Location | Luzerne, Pennsylvania |
| Surname | Griffith |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Additional Details | |
| Occupation | Teacher |
| Industry | Music Piano |
| Class of Worker | OA |
| Can Read/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Teacher |
| Township / Ward | Freeland Borough |
| Est. Birth Year | ~1891 |
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.
4 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| James Griffith | Head | — | 62 | ~1868 |
| Anna Griffith | Other | — | 40 | ~1890 |
| James Griffith | Son | — | 34 | ~1896 |
| John Griffith | Son | — | 39 | ~1891 |
Census Appearances
1910
Luzerne, Pennsylvania
Son, age 19
Luzerne, Pennsylvania · implied b. ~1891 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Griffiths |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1920
Luzerne, Pennsylvania
Son, age 29
Luzerne, Pennsylvania · implied b. ~1891 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Griffith |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 29 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Luzerne, Pennsylvania
Son, age 39
Luzerne, Pennsylvania · implied b. ~1891 — 4 household members
| Surname | Griffith |
| Given Name | John |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 39 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Teacher |
| Industry | Music Piano |
| Class of Worker | OA |
| Can Read/Write | Yes |
| 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 John Griffith across 3 US Census years (1910, 1920 and 1930) in Luzerne, Pennsylvania, using XGBoost record linkage. Identified parents: father James Griffith (~0.92 confidence) and father William Griffiths (~0.92 confidence) and father James Griffith (~0.92 confidence) and mother Mary Griffiths (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
James Griffith
b. ~1867
Source father
● Household
· direct · ~0.92
Father
William Griffiths
b. ~1867
Source father
● Household
· direct · ~0.92
Father
James Griffith
b. ~1868
Source father
● Household
· direct · ~0.92
Mother
Mary Griffiths
b. ~1868
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Griffith
Son · 1930 · age 39 · b. ~1891 · Pennsylvania
★ You are viewing this record
Sibling
James Griffith
Sibling · 1930 · age 34
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:fifteenthcensus00reel2067:0403)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Kenneth Johnson | 17 | Son | — | Pennsylvania |
| 2 | Wilbur Johnson | 4 | Son | — | Pennsylvania |
| 3 | Ambrose Whalen | 47 | Head | — | Pennsylvania |
| 4 | Annie Whalen | 46 | Wife-H | Dentist | Pennsylvania |
| 5 | Marie Whalen | 10 | Daughter | — | Pennsylvania |
| 6 | Dolores Whalen | 8 | Daughter | — | Pennsylvania |
| 7 | Helen Whalen | 5 | Daughter | — | Pennsylvania |
| 8 | Clyde Bell | 36 | Head | — | Pennsylvania |
| 9 | Blanche Bell | 36 | Wife-H | Saleswoman | Pennsylvania |
| 10 | Margaret Bell | 10 | Daughter | — | Pennsylvania |
| 11 | Robert Bell | 7 | Son | — | Pennsylvania |
| 12 | Clyde Bell | 4 | Son | — | Pennsylvania |
| 13 | Arthur Bell | 2 | Son | — | Pennsylvania |
| 14 | James Bell | 50 | Head | — | Pennsylvania |
| 15 | Catherine Bell | 49 | Wife-H | Stock Clerk | Pennsylvania |
| 16 | Harold Bell | 12 | Son | — | Pennsylvania |
| 17 | William Davis | 44 | Head | — | Pennsylvania |
| 18 | Edith Davis | 42 | Wife-H | Proprietor | Pennsylvania |
| 19 | Dorothy Davis | 21 | Daughter | — | Pennsylvania |
| 20 | Benjamin Davis | 20 | Son | — | Pennsylvania |
| 21 | William Davis | 13 | Son | — | Pennsylvania |
| 22 | George D. Shearman | 55 | Head | — | Pennsylvania |
| 23 | Maude Shearman | 41 | Wife-H | Engineer | Pennsylvania |
| 24 | James Griffith | 62 | Head | — | Pennsylvania |
| 25 | Anna Griffith | 40 | Daughter-H | Proprietor | Pennsylvania |
| 26 | John Griffith THIS PERSON | 39 | Son | Teacher | Pennsylvania |
| 27 | James Griffith | 34 | Son | — | Pennsylvania |
| 28 | Lina Lloyd | 50 | Head | Manager | Pennsylvania |
| 29 | Elizabeth Lloyd | 45 | Sister | Proprietor | Pennsylvania |
| 30 | Margaret Lloyd | 38 | Sister | — | Pennsylvania |
| 31 | Edward Curry | 65 | Head | Sexton | Pennsylvania |
| 32 | Margaret Curry | 64 | Wife-H | — | Pennsylvania |
| 33 | Margaret Curry | 27 | Daughter | Bookkeeper | Pennsylvania |
| 34 | Joseph Curry | 25 | Son | Mechanic | Pennsylvania |
| 35 | Mary Curry | 21 | Daughter | Teacher | Pennsylvania |
| 36 | Francis Yavorsky | 55 | Head-H | — | Lithuania |
| 37 | Anna Yavorsky | 28 | Daughter | — | Pennsylvania |
| 38 | John Horak | 47 | Head | Proprietor | Pennsylvania |
| 39 | Hilda M. Horak | 30 | Wife-H | — | Pennsylvania |
| 40 | John Horak | 5 | Son | — | Pennsylvania |
| 41 | Janice Horak | 3 | Daughter | — | Pennsylvania |
| 42 | Michael Boyle | 48 | Head | Laborer | Pennsylvania |
| 43 | Jane Boyle | 69 | Mother-H | — | Pennsylvania |
| 44 | Agnes Boyle | 30 | Sister | Clerk | Pennsylvania |
| 45 | John Taffert | 46 | Head | Laborer | Pennsylvania |
| 46 | Elizabeth Taffert | 48 | Wife-H | — | Pennsylvania |
| 47 | Dorothy Taffert | 17 | Daughter | — | Pennsylvania |
| 48 | Wade Shilohman | 31 | Head | Carpenter | Pennsylvania |
| 49 | George Shilohman | 33 | Brother | — | Pennsylvania |
| 50 | Herbert W. Fritz | 53 | Head | Proprietor | Pennsylvania |
Pedigree Summary
John + 1 sibling
Gen 1 · 4 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)