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Robert Griffin — 1940 US Census Record
Model Tree available1940 United States Federal Census · Suffolk-County, Massachusetts
Our Model Tree links this Robert Griffin across the 1920, 1930 and 1940 US Censuses in Suffolk-County, Massachusetts (XGBoost, ~Confirmed), with identified parents Frank & Frank — first a head (b.~1917), then head of a 5-person household.
Age 23
b. ~1917
Male
Head
Born: Massachusetts
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Suffolk-County, Massachusetts |
| Surname | Griffin |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Additional Details | |
| Occupation | Chauffeur |
| Industry | Coal Company |
| Class of Worker | PW |
| Hours Worked | 2 |
| Income (1939) | 140 |
| Highest Grade | 7 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
| Occupation | Chauffeur |
| Township / Ward | Boston City |
| Est. Birth Year | ~1917 |
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.
5 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Robert | Age | Birth yr |
|---|---|---|---|---|
| Mildred Griffin | Spouse | — | 24 | ~1916 |
| Robert Griffin | Son | — | 4 | ~1936 |
| Robert Griffin | Head | — | 23 | ~1917 |
| William Griffin | Son | — | 2 | ~1938 |
| Gerald Griffin | Son | — | — |
Census Appearances
1920
Suffolk, Massachusetts
Son, age 3
Suffolk, Massachusetts · implied b. ~1917 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Griffin |
| Given Name | Robert F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1930
Suffolk, Massachusetts
Son, age 13
Suffolk, Massachusetts · implied b. ~1917 — 12 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Griffin |
| Given Name | Robert F. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Massachusetts |
| Father's Birthplace | Massachusetts |
| Mother's Birthplace | Massachusetts |
| Can Read/Write | Yes |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
1940
Suffolk-County, Massachusetts
Head, age 23
Suffolk-County, Massachusetts · implied b. ~1917 — 5 household members
| Surname | Griffin |
| Given Name | Robert |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 23 |
| Marital Status | Married |
| Birthplace | Massachusetts |
| 1935 Residence (City) | Boston City |
| 1935 Residence (County) | Suffolk |
| Occupation | Chauffeur |
| Industry | Coal Company |
| Class of Worker | PW |
| Hours Worked | 2 |
| Income (1939) | 140 |
| Highest Grade | 7 |
| 1935 Residence | Same place |
| Birth State | Massachusetts |
| Birth Country | United States |
| Birthplace (normalized) | massachusetts |
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 (1920, 1930 and 1940) in 2 locations, using XGBoost record linkage. Identified parents: father Frank Griffin (~0.92 confidence) and father Frank Griffin (~0.92 confidence) and mother May Griffin (~0.92 confidence). The pedigree spans 1 generation with 3 identified ancestors.
Show:
Gen 1
Parents
confidence ≈ 0.92
Father
Frank Griffin
b. ~1892
Source father
● Household
· direct · ~0.92
Father
Frank Griffin
b. ~1892
Source father
● Household
· direct · ~0.92
Mother
May Griffin
b. ~1892
Source mother
● Household
· direct · ~0.92
This person
Anchor record
Robert Griffin
Head · 1940 · age 23 · b. ~1917 · Massachusetts
★ You are viewing this record
Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Suffolk-County, Massachusetts
Open full size
1940 US Federal Census — Suffolk-County, Massachusetts
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01659-00189)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Honora Hogan | 29 | Daughter | Packer | Massachusetts |
| 2 | Christopher Fisher | 27 | Head | Laborer | Massachusetts |
| 3 | Mary Fisher | 24 | Wife | — | Massachusetts |
| 4 | Ronald Fisher | 2 | Son | — | Massachusetts |
| 5 | James Fisher | 2 | Son | — | Massachusetts |
| 6 | Mary Fisher | 1 | Mary | — | Massachusetts |
| 7 | Michael Connolly | 51 | Head | Longshoreman | Ireland |
| 8 | Margaret Connolly | 14 | Daughter | — | Massachusetts |
| 9 | Anna Connolly | 22 | Daughter | — | Massachusetts |
| 10 | Helen Connolly | 21 | Daughter | Ironworker | Massachusetts |
| 11 | John Connolly | 17 | Son | Laborer | Massachusetts |
| 12 | Peter Connolly | 16 | Son | — | Massachusetts |
| 13 | William Connolly | 11 | Son | — | Massachusetts |
| 14 | Paul Connolly | 10 | Son | — | Massachusetts |
| 15 | Frank Maglet | 29 | Head | Laborer | Massachusetts |
| 16 | Grace Maglet | 26 | Wife | — | Massachusetts |
| 17 | Frank Maglet | 9 | Son | — | Massachusetts |
| 18 | Theodore Maglet | 6 | Son | — | Massachusetts |
| 19 | Harold Maglet | 4 | Son | — | Massachusetts |
| 20 | George Maglet | 3 | Son | — | Massachusetts |
| 21 | Joseph Maglet | 1 | Son | — | Massachusetts |
| 22 | Line Extra | None | — | — | — |
| 23 | Ellen Gass | 39 | Head | Household | Massachusetts |
| 24 | Joseph Gass | 18 | Son | Laborer | Massachusetts |
| 25 | Annie Boudrow | 71 | Mother | — | Canada |
| 26 | Marcella Tarrish | 30 | Lodger | Waitress | Canada |
| 27 | Thomas Waters | 40 | Head | Trucker | Pennsylvania |
| 28 | Mary Waters | 47 | Wife | — | Massachusetts |
| 29 | Virginia Waters | 17 | Daughter | — | Massachusetts |
| 30 | Dorothy Waters | 10 | Daughter | — | Massachusetts |
| 31 | Robert Waters | 9 | Son | — | Massachusetts |
| 32 | Robert Griffin THIS PERSON | 23 | Head | Chauffeur | Massachusetts |
| 33 | Mildred Griffin | 24 | Wife | — | Massachusetts |
| 34 | Robert Griffin | 4 | Son | — | Massachusetts |
| 35 | William Griffin | 2 | Son | — | Massachusetts |
| 36 | Gerald Griffin | None | Son | — | Massachusetts |
| 37 | John Harrington | 55 | Head | Longshoreman | Ireland |
| 38 | Catherine Harrington | 52 | Wife | — | Ireland |
| 39 | Catherine Harrington | 22 | Daughter | Messenger | Massachusetts |
| 40 | Gertrude Harrington | 20 | Daughter | Ironworker | Massachusetts |
Pedigree Summary
Robert
Gen 1 · 3 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)