MG
Mary Griffith — 1930 US Census Record
Linked across censuses1930 United States Federal Census · Camden, New Jersey
Our Model Tree links this Mary Griffith across the 1920, 1930 and 1940 US Censuses in Camden, New Jersey (XGBoost, ~Confirmed) — first a spouse (b.~1877), then head of a 4-person household.
Age 53
b. ~1877
Female
Spouse
Born: New Jersey
Married
1930 Census Record Details
| Census Year | 1930 |
| Location | Camden, New Jersey |
| Surname | Griffith |
| Given Name | Mary R |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | New Jersey |
| Age at First Marriage | 26 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Additional Details | |
| Occupation | Watchman |
| Industry | ship yard |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
| Occupation | Watchman |
| Township / Ward | Camden City |
| Est. Birth Year | ~1877 |
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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Mary Griffith | Daughter | — | 8 | ~1922 |
| Thomas Griffith | Head | — | 56 | ~1874 |
| Thomas Griffith | Son | — | 16 | ~1914 |
| Mary Griffith | Spouse | — | 53 | ~1877 |
Census Appearances
1920
Camden, New …
Spouse, age 43
Camden, New Jersey · implied b. ~1877 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Griffith |
| Given Name | Mary R |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 43 |
| Marital Status | Married |
| Birthplace | New Jersey |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1930
Camden, New …
Spouse, age 53
Camden, New Jersey · implied b. ~1877 — 4 household members
| Surname | Griffith |
| Given Name | Mary R |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 53 |
| Marital Status | Married |
| Birthplace | New Jersey |
| Age at First Marriage | 26 |
| Father's Birthplace | Pennsylvania |
| Mother's Birthplace | Pennsylvania |
| Occupation | Watchman |
| Industry | ship yard |
| Class of Worker | W |
| Can Read/Write | Yes |
| Birth State | New Jersey |
| Birth Country | United States |
| Birthplace (normalized) | new jersey |
1940
Camden-County, New …
Spouse, age 59
Camden-County, New Jersey · implied b. ~1881 — 2 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Griffiths |
| Given Name | Mary E. |
| Relationship to Head | Wife |
| Sex | F |
| Color / Race | White |
| Age | 59 |
| Marital Status | Married |
| Birthplace | New Jersey |
| 1935 Residence (City) | Camden City |
| 1935 Residence (County) | Camden |
| Income (1939) | 0 |
| Highest Grade | No 3 |
| 1935 Residence | Same place |
| 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 Mary Griffith across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Griffith
Spouse · 1930 · age 53 · b. ~1877 · 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 — Camden, New Jersey
Open full size
1930 US Federal Census — Camden, New Jersey
Page Contents
50 people indexed on this census page (ia:1930:newjerseycensus00reel1321:0235)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Amelio Sparano | 14 | Son | None | New Jersey |
| 2 | Carmella Sparano | 12 | Daughter | None | New Jersey |
| 3 | Michael Sparano | 11 | Son | None | New Jersey |
| 4 | Katie Sparano | 8 | Daughter | None | New Jersey |
| 5 | Frank Stemmer | 40 | Head | None | New York |
| 6 | Nellie Stemmer | 42 | Wife | Locomotive Engineer | Northern Ireland |
| 7 | Frank Stemmer | 15 | Son | None | New Jersey |
| 8 | Mabel Stemmer | 12 | Daughter | None | New Jersey |
| 9 | Marietta Stemmer | 10 | Daughter | None | New Jersey |
| 10 | Eileen Stemmer | 8 | Daughter | None | New Jersey |
| 11 | Mary E Williams | 49 | Head | None | Pennsylvania |
| 12 | Walter Williams | 16 | Son | Laundress | New Jersey |
| 13 | Edna Williams | 14 | Daughter | Apprentice | New Jersey |
| 14 | Homer Clark | 20 | Son-in-law | None | New Jersey |
| 15 | Alma Clark | 19 | Daughter | Laundress | New Jersey |
| 16 | Redmond Pierson | 50 | Boarder | Laundress | New Jersey |
| 17 | Thomas J Griffith | 56 | Head | Cooper | Pennsylvania |
| 18 | Mary R Griffith THIS PERSON | 53 | Wife | Watchman | New Jersey |
| 19 | Thomas J Jr Griffith | 16 | Son | None | New Jersey |
| 20 | Mary R Griffith | 8 | Daughter | None | New Jersey |
| 21 | Vincent Braun | 46 | Head | None | Yugoslavia |
| 22 | Helen Braun | 39 | Wife | Machinist | Yugoslavia |
| 23 | Vincent Jr Braun | 16 | Son | None | New Jersey |
| 24 | Joseph Braun | 14 | Son | None | New Jersey |
| 25 | Catherine Braun | 10 | Daughter | None | New Jersey |
| 26 | This Ends The Enumeration Of Block 541 | None | — | — | — |
| 27 | — | None | — | — | — |
| 28 | — | None | — | — | — |
| 29 | — | None | — | — | — |
| 30 | — | None | — | — | — |
| 31 | — | None | — | — | — |
| 32 | — | None | — | — | — |
| 33 | — | None | — | — | — |
| 34 | — | None | — | — | — |
| 35 | — | None | — | — | — |
| 36 | — | None | — | — | — |
| 37 | — | None | — | — | — |
| 38 | — | None | — | — | — |
| 39 | — | None | — | — | — |
| 40 | — | None | — | — | — |
| 41 | — | None | — | — | — |
| 42 | — | None | — | — | — |
| 43 | — | None | — | — | — |
| 44 | — | None | — | — | — |
| 45 | — | None | — | — | — |
| 46 | — | None | — | — | — |
| 47 | — | None | — | — | — |
| 48 | — | None | — | — | — |
| 49 | — | None | — | — | — |
| 50 | — | None | — | — | — |
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)