JG
John Griffith — 1940 US Census Record
Model Tree available1940 United States Federal Census · Baltimore-City-County, Maryland
Our Model Tree links this John Griffith across the 1920, 1930 and 1940 US Censuses in Baltimore-City-County, Maryland (XGBoost, ~Confirmed), with identified parents Annie — first a head (b.~1898), then head of a 4-person household.
Age 42
b. ~1898
Male
Head
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-City-County, Maryland |
| Surname | Griffith |
| Given Name | John W. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Additional Details | |
| Occupation | Chauffeur |
| Industry | Paper plant |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1050 |
| Highest Grade | No 5 |
| 1935 Residence | Same House |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Chauffeur |
| Township / Ward | Baltimore City |
| Est. Birth Year | ~1898 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Louise Griffith | Daughter | — | 15 | ~1925 |
| John Griffith | Head | — | 42 | ~1898 |
| Raymond Griffith | Son | — | 11 | ~1929 |
| Sarah Griffith | Spouse | — | 33 | ~1907 |
Census Appearances
1920
X, Maryland
Son, age 21
X, Maryland · implied b. ~1899 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Griffith |
| Given Name | John W. |
| Relationship to Head | son |
| Sex | M |
| Color / Race | White |
| Age | 21 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | none |
| Can Read | Yes |
| Can Write | Yes |
| Speaks English | Yes |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1930
Baltimore, Maryland
Head, age 33
Baltimore, Maryland · implied b. ~1897 — 4 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Griffith |
| Given Name | John W |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 33 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 26 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | chauffeur |
| Industry | Paper Co. |
| Class of Worker | W |
| Can Read/Write | Yes |
| Home Owned/Rented | R |
| Home Value / Rent | 24 |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-City-County, Maryland
Head, age 42
Baltimore-City-County, Maryland · implied b. ~1898 — 4 household members
| Surname | Griffith |
| Given Name | John W. |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 42 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore City |
| 1935 Residence (County) | Baltimore City |
| Occupation | Chauffeur |
| Industry | Paper plant |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 1050 |
| Highest Grade | No 5 |
| 1935 Residence | Same House |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
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 (1920, 1930 and 1940) in 3 locations, using XGBoost record linkage. Identified parents: mother Annie Griffith (~0.92 confidence). The pedigree spans 1 generation with 1 identified ancestor.
Show:
Gen 1
Parents
confidence ≈ 0.92
Mother
Annie Griffith
b. ~1877
Source mother
● Household
· direct · ~0.92
This person
Anchor record
John Griffith
Head · 1940 · age 42 · b. ~1898 · Maryland
★ 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 — Baltimore-City-County, Maryland
Open full size
1940 US Federal Census — Baltimore-City-County, Maryland
Page Contents
20 people indexed on this census page (nara:1940:m-t0627-01521-00310)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Joseph G. Lippy | 48 | Head | Automobile Mechanic | Maryland |
| 42 | Lona C. Lippy | 45 | Wife | — | Virginia |
| 43 | William F. Ford | 37 | Head | Track Oiler | Maryland |
| 44 | Mattie A. Ford | 54 | Wife | — | Maryland |
| 45 | James R. Warden | 30 | Stepson | — | Maryland |
| 46 | Alonzo S. Warden | 27 | Stepson | Laborer | Maryland |
| 47 | John W. Griffith THIS PERSON | 42 | Head | Chauffeur | Maryland |
| 48 | Sarah K. Griffith | 33 | Wife | — | Maryland |
| 49 | Louise K. Griffith | 15 | Daughter | — | Maryland |
| 50 | Raymond J. Griffith | 11 | Son | — | Maryland |
| 51 | George W. Patten | 28 | Head | Chauffeur | Maryland |
| 52 | Evelyn C. Patten | 25 | Wife | — | Maryland |
| 53 | George W. Patten | 7 | Son | — | Maryland |
| 54 | Shirley R. Patten | 4 | Daughter | — | Maryland |
| 55 | John A. Patten | 2 | Son | — | Maryland |
| 56 | James W. Patten | 0 | Son | — | Maryland |
| 57 | William Sherman | 48 | Head | Electric Crane Operator | West Virginia |
| 58 | Alice V. Sherman | 39 | Wife | — | Maryland |
| 59 | Charles P. Sherman | 18 | Son | — | Maryland |
| 60 | Geraldine I. Sherman | 20 | Daughter | Ray Erector | Maryland |
Pedigree Summary
John
Gen 1 · 1 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)