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Robert Griffith — 1940 US Census Record
Model Tree available1940 United States Federal Census · Philadelphia-County, Pennsylvania
Our Model Tree links this Robert Griffith across the 1920, 1930 and 1940 US Censuses in Philadelphia-County, Pennsylvania (XGBoost, ~Confirmed), with identified parents Griffith & William — first a son (b.~1916), then head of a 4-person household.
Age 24
b. ~1916
Male
Son
Born: Pennsylvania
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Philadelphia-County, Pennsylvania |
| Surname | Griffith |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Philadelphia |
| 1935 Residence (County) | Philadelphia |
| Additional Details | |
| Occupation | Motorman |
| Industry | Street railway |
| Class of Worker | PW |
| Hours Worked | 30 |
| Income (1939) | 960 |
| Highest Grade | 8 |
| 1935 Residence | Same place |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
| Occupation | Motorman |
| Township / Ward | Philadelphia |
| Est. Birth Year | ~1916 |
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 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Elva Griffith | Daughter | — | 13 | ~1927 |
| Robert Griffith | Son | — | 24 | ~1916 |
| Florence Griffith | Daughter | — | 10 | ~1930 |
| Elva Griffith | Head | — | 40 | ~1900 |
Census Appearances
1920
Philadelphia, Pennsylvania
Son, age 4
Philadelphia, Pennsylvania · implied b. ~1916 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Griffith |
| 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 |
| Can Read | No |
| Can Write | No |
| Speaks English | No |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1930
Philadelphia, Pennsylvania
Son, age 14
Philadelphia, Pennsylvania · implied b. ~1916 — 7 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Griffiths |
| 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/Write | Yes |
| Birth State | Pennsylvania |
| Birth Country | United States |
| Birthplace (normalized) | pennsylvania |
1940
Philadelphia-County, Pennsylvania
Son, age 24
Philadelphia-County, Pennsylvania · implied b. ~1916 — 4 household members
| Surname | Griffith |
| Given Name | Robert |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 24 |
| Marital Status | Single |
| Birthplace | Pennsylvania |
| 1935 Residence (City) | Philadelphia |
| 1935 Residence (County) | Philadelphia |
| Occupation | Motorman |
| Industry | Street railway |
| Class of Worker | PW |
| Hours Worked | 30 |
| Income (1939) | 960 |
| Highest Grade | 8 |
| 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 Robert Griffith across 3 US Census years (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Griffith Griffiths (~0.92 confidence) and father William Griffith (~0.92 confidence) and mother Edna Griffith (~0.92 confidence) and mother Elva Griffith (~0.92 confidence). The pedigree spans 1 generation with 4 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Griffith Griffiths
b. ~1896
Source father
● Household
· direct · ~0.92
Father
William Griffith
b. ~1896
Source father
● Household
· direct · ~0.92
Mother
Edna Griffith
b. ~1899
Source mother
● Household
· direct · ~0.92
Mother
Elva Griffith
b. ~1900
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Griffith
Son · 1940 · age 24 · b. ~1916 · Pennsylvania
★ You are viewing this record
Sibling
Elva Griffith
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Florence Griffith
Sibling · 1940 · age 10
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
1940 US Federal Census — Philadelphia-County, Pennsylvania
Open full size
1940 US Federal Census — Philadelphia-County, Pennsylvania
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-03742-00754)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Gottlob Wait | 46 | Head | Conductor | Pennsylvania |
| 2 | Anna Wait | 48 | Wife | — | Pennsylvania |
| 3 | Anna C. Wait | 20 | Daughter | Nursery Worker | Pennsylvania |
| 4 | Rose Weber | 47 | Head | Elevator Operator | Pennsylvania |
| 5 | Florence Weber | 29 | Daughter | — | Pennsylvania |
| 6 | Rosalie Loader | 23 | Daughter | Body Paster | Pennsylvania |
| 7 | Francis Loader | 3 | Son | — | Pennsylvania |
| 8 | James C. Fitzgerald | 62 | Head | Machinist | Pennsylvania |
| 9 | Anna Fitzgerald | 51 | Wife | — | Pennsylvania |
| 10 | Myrtle Gerberdt | 18 | Daughter | — | Pennsylvania |
| 11 | Gerberdt | 16 | Son | — | Pennsylvania |
| 12 | Frederick Metz | 64 | Head | Baker | Germany |
| 13 | Augusta Metz | 58 | Wife | — | Pennsylvania |
| 14 | Frederick Metz | 28 | Son | Shit Cutter | Pennsylvania |
| 15 | Louis Metz | 27 | Son | Baker | Pennsylvania |
| 16 | William H. Savage | 59 | Head | Collector | Georgia |
| 17 | Carrie Savage | 62 | Wife | — | Pennsylvania |
| 18 | Doris Savage | 18 | Daughter | — | Pennsylvania |
| 19 | Otto B. Blagg | 47 | Head | Route Supervisor | West Virginia |
| 20 | Zyda Blagg | 43 | Wife | — | Maryland |
| 21 | Mary Thompson | 38 | Head | — | Pennsylvania |
| 22 | James A. Thompson | 9 | Son | — | Pennsylvania |
| 23 | Thomas Thompson | 5 | Son | — | Pennsylvania |
| 24 | Katherine Mckinley | 43 | Sister | Inserter | Pennsylvania |
| 25 | James Mckinley | 31 | Brother | Assistant Cook | Pennsylvania |
| 26 | John Mckinley | 29 | Brother | Coal Cleaner | Pennsylvania |
| 27 | Elizabeth Linner | 47 | Head | Interior Decorator | Pennsylvania |
| 28 | James R. Truitt | 39 | Head | Repairman | Delaware |
| 29 | Mary W. Truitt | 37 | Wife | Beautician | Maryland |
| 30 | Harry D. Truitt | 16 | Son | — | Maryland |
| 31 | Margaret R. Truitt | 15 | Daughter | — | Maryland |
| 32 | James R. Truitt | 13 | Son | — | Maryland |
| 33 | Blanche Kennedy | 54 | Mother-in-law | — | Maryland |
| 34 | Michael Dalton | 54 | Head | Shipper | Ireland |
| 35 | Anna Dalton | 50 | Wife | — | Ireland |
| 36 | Mary Dalton | 15 | Daughter | Secretary | Pennsylvania |
| 37 | Elva Griffith | 40 | Head | Spooler | Pennsylvania |
| 38 | Robert Griffith THIS PERSON | 24 | Son | Motorman | Pennsylvania |
| 39 | Elva Mae Griffith | 13 | Daughter | — | Pennsylvania |
| 40 | Florence Griffith | 10 | Daughter | — | Pennsylvania |
Pedigree Summary
Robert + 2 siblings
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 1940 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)