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Robert Griffin — 1930 US Census Record
Model Tree available1930 United States Federal Census · Philadelphia, Pennsylvania
Our Model Tree links this Robert Griffin across the 1910, 1920 and 1930 US Censuses in Philadelphia, Pennsylvania (XGBoost, ~Confirmed), with identified parents Josiah & Margaret — first a head (b.~1906), then head of a 3-person household.
Age 24
b. ~1906
Male
Head
Born: Pennsylvania
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Philadelphia, Pennsylvania |
| Surname | Griffin |
| Given Name | Robert |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Age at First Marriage | 24 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Additional Details | |
| Occupation | Spinner |
| Industry | Worsted Mill |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 22 |
| Radio Set | R |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Spinner |
| Township / Ward | Philadelphia City |
| Est. Birth Year | ~1906 |
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.
3 people recorded at the same address in the 1930 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Robert Griffin | Son | — | 4 | ~1926 |
| Lydia Griffin | Spouse | — | 25 | ~1905 |
| Robert Griffin | Head | — | 24 | ~1906 |
Census Appearances
1910
Philadelphia, Pennsylvania
Son, age 4
Philadelphia, Pennsylvania · implied b. ~1906 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Griffin |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 4 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1920
Philadelphia, Pennsylvania
Son, age 14
Philadelphia, Pennsylvania · implied b. ~1906 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Griffin |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 14 |
| 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
Philadelphia, Pennsylvania
Head, age 24
Philadelphia, Pennsylvania · implied b. ~1906 — 3 household members
| Surname | Griffin |
| Given Name | Robert |
| Relationship to Head | head |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Married |
| Birthplace | Pennsylvania |
| Age at First Marriage | 24 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Spinner |
| Industry | Worsted Mill |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 22 |
| Radio Set | R |
| 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 Robert Griffin across 3 US Census years (1910, 1920 and 1930) in Philadelphia, Pennsylvania, using XGBoost record linkage. Identified parents: father Josiah Griffin (~0.92 confidence) and mother Margaret Griffin (~0.92 confidence). The pedigree spans 1 generation with 2 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Josiah Griffin
b. ~1876
Source father
● Household
· direct · ~0.92
Mother
Margaret Griffin
b. ~1877
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Griffin
Head · 1930 · age 24 · b. ~1906 · Pennsylvania
★ 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 — Philadelphia, Pennsylvania
Open full size
1930 US Federal Census — Philadelphia, Pennsylvania
Page Contents
49 people indexed on this census page (ia:1930:fifteenthcensus00reel2109ns:0429)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Isaac J Classen | 62 | head | Proprietor | Holland |
| 2 | Susan J Classen | 72 | wife | None | Pennsylvania |
| 3 | Edward W Dennis | 23 | head | Machinist | Pennsylvania |
| 4 | Hazel M Dennis | 22 | wife | None | New Jersey |
| 5 | M. Gertrude Dennis | 2 | daughter | None | Pennsylvania |
| 6 | Hazel Dennis | 1 | daughter | None | Pennsylvania |
| 7 | Pasquale Spagnuolo | 39 | head | Laborer | Italy |
| 8 | Mary Spagnuolo | 35 | wife | None | Italy |
| 9 | Theresa Spagnuolo | 7 | daughter | None | Italy |
| 10 | George Spagnuolo | 6 | son | None | Pennsylvania |
| 11 | Mary Spagnuolo | 5 | daughter | None | Pennsylvania |
| 12 | Frank Spagnuolo | 3 | son | None | Pennsylvania |
| 13 | Rose Spagnuolo | 1 | daughter | None | Pennsylvania |
| 14 | Earl Sanderson | 33 | head | Agent | New York |
| 15 | Gladys Sanderson | 31 | wife | None | Pennsylvania |
| 16 | Earl Sanderson | 8 | son | None | New York |
| 17 | Myrtle Sanderson | 6 | daughter | None | Pennsylvania |
| 18 | Raymond Springer | 28 | head | Salesman | Pennsylvania |
| 19 | Catherine Springer | 24 | wife | None | Pennsylvania |
| 20 | Grace Bell | 24 | boarder | Cook | Pennsylvania |
| 21 | Frank Bell | 4 | boarder | None | Pennsylvania |
| 23 | Elmer R. Hart | 34 | head | Chauffeur | Pennsylvania |
| 24 | Margaret B. Hart | 29 | wife | None | Pennsylvania |
| 25 | Elmer Jr. R. Hart | 12 | son | None | Pennsylvania |
| 26 | Robert G. Hart | 10 | son | None | Pennsylvania |
| 27 | Eleanor Z. Hart | 7 | daughter | None | Pennsylvania |
| 28 | Regina Hart | 6 | daughter | None | Pennsylvania |
| 29 | Emma Ash | 64 | head | None | Pennsylvania |
| 30 | Anna Ash | 41 | daughter | Saleslady | Pennsylvania |
| 31 | Robert Griffin THIS PERSON | 24 | head | Spinner | Pennsylvania |
| 32 | Lydia Griffin | 25 | wife | None | Pennsylvania |
| 33 | Robert Jr. Griffin | 4 | son | None | Pennsylvania |
| 34 | Edward J. Downs | 29 | head | Electrician | Pennsylvania |
| 35 | Mary E. Downs | 46 | wife | None | Pennsylvania |
| 36 | Pauline Schultze | 72 | head | None | Germany |
| 37 | Everett Ireland | 28 | head | Machinist | Pennsylvania |
| 38 | Lillie Ireland | 26 | wife | None | Pennsylvania |
| 39 | Norma Ireland | 1 | daughter | None | Pennsylvania |
| 40 | Frank Schlotterbeck | 29 | head | Salesman | Pennsylvania |
| 41 | Verna Schlotterbeck | 28 | wife | Cashier | Pennsylvania |
| 42 | Wm. Mcgee | 56 | head | Cement | Northern Ireland |
| 43 | Elise Mcgee | 46 | wife | None | Pennsylvania |
| 44 | George E. Frank | 33 | head | Laborer | Pennsylvania |
| 45 | Mary E. Frank | 28 | wife | None | Pennsylvania |
| 46 | Marlene E. Frank | 5 | daughter | None | Pennsylvania |
| 47 | Harry Githens | 35 | head | Brakeman | New Jersey |
| 48 | Elise Githens | 29 | wife | None | Pennsylvania |
| 49 | Harry Jr. Githens | 8 | son | None | New Jersey |
| 50 | Anna Githens | 6 | daughter | None | Pennsylvania |
Pedigree Summary
Robert
Gen 1 · 2 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)