MG
Mary Griffith — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Baltimore-County, Maryland
Our Model Tree links this Mary Griffith across the 1930 and 1940 US Censuses in Baltimore-County, Maryland (XGBoost, ~Confirmed) — first a daughter (b.~1925), then head of a 9-person household.
Age 15
b. ~1925
Female
Daughter
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Baltimore-County, Maryland |
| Surname | Griffith |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore |
| 1935 Residence (County) | Baltimore |
| Additional Details | |
| Highest Grade | 4 |
| 1935 Residence | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Catonsville Pt |
| Est. Birth Year | ~1925 |
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.
9 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Alice Griffith | Daughter | — | 17 | ~1923 |
| Doris Griffith | Daughter | — | 12 | ~1928 |
| Mary Griffith | Daughter | — | 15 | ~1925 |
| Priscilla Griffith | Daughter | — | 13 | ~1927 |
| Charles Griffith | Head | — | 63 | ~1877 |
| Paul Griffith | Son | — | 11 | ~1929 |
| Charles Griffith | Son | — | 10 | ~1930 |
| Edgar Griffith | Son | — | 19 | ~1921 |
| Rose Griffith | Spouse | — | 44 | ~1896 |
Census Appearances
1930
Baltimore, Maryland
Daughter, age 5
Baltimore, Maryland · implied b. ~1925 — 6 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Griffith |
| Given Name | Mary |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 5 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Ohio |
| Mother's Birthplace | Germany |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Baltimore-County, Maryland
Daughter, age 15
Baltimore-County, Maryland · implied b. ~1925 — 9 household members
| Surname | Griffith |
| Given Name | Mary |
| Relationship to Head | daughter |
| Sex | F |
| Color / Race | White |
| Age | 15 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Baltimore |
| 1935 Residence (County) | Baltimore |
| Highest Grade | 4 |
| 1935 Residence | Maryland |
| 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 Mary Griffith across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Griffith
Daughter · 1940 · age 15 · b. ~1925 · Maryland
★ You are viewing this record
Sibling
Alice Griffith
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Paul Griffith
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Doris Griffith
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Griffith
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Edgar Griffith
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Priscilla Griffith
Sibling · 1940 · age 13
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 — Baltimore-County, Maryland
Open full size
1940 US Federal Census — Baltimore-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01503-00364)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Margaret Miller | 27 | daughter | Private Secretary | Maryland |
| 42 | James T. Miller | 27 | son-in-law | Finisher | Maryland |
| 43 | Edwin R. Lawrence | 53 | Head | Supervisor | Maryland |
| 44 | Grace Lawrence | 50 | wife | — | Maryland |
| 45 | Grace Lee Lawrence | 21 | daughter | — | Maryland |
| 46 | Mary Jane Lawrence | 17 | daughter | — | Maryland |
| 47 | Barkley O'Keefe | 35 | brother-in-law | — | Maryland |
| 48 | Nellie M. Taylor | 48 | Head | Cook | Maryland |
| 49 | Ethel Taylor | 50 | step-daughter | — | England |
| 50 | Robert Short | 22 | son | Brushmaker | Maryland |
| 51 | Eleanor Vick | 65 | Head | — | Maryland |
| 52 | Harold M. Vick | 30 | son | Attorney | Maryland |
| 53 | Vera Fisher | 37 | daughter | Operator | Maryland |
| 54 | Eleanor M. Fisher | 14 | grand-daughter | — | Maryland |
| 55 | Sarah A. Fisher | 12 | grand-daughter | — | Maryland |
| 56 | Clyde M. Vick | 37 | Head | Installing Service Stations | Maryland |
| 57 | Rita M. Vick | 27 | wife | — | Maryland |
| 58 | Martin Haas | 31 | Head | — | Germany |
| 59 | Freda Haas | 36 | wife | — | Germany |
| 60 | Gordon Hamill | 22 | Head | Radio Repair And Salesman | Maryland |
| 61 | Doris Hamill | 20 | wife | — | Maryland |
| 62 | Albert G. Roeder | 44 | Head | Laboratory Technician | Maryland |
| 63 | Hilda Roeder | 39 | wife | — | Maryland |
| 64 | Norma Roeder | 16 | daughter | — | Maryland |
| 65 | Vera Roeder | 14 | daughter | — | Maryland |
| 66 | Walter Roeder | 12 | son | — | Maryland |
| 67 | Richard Roeder | 9 | son | — | Maryland |
| 68 | Thomas Roeder | 1 | son | — | Maryland |
| 69 | Edward W. Baker | 44 | Head | General Repair | Maryland |
| 70 | Lottie Baker | 40 | wife | — | Maryland |
| 71 | Ruth Baker | 19 | daughter | — | Maryland |
| 72 | Charles R. Griffith | 63 | Head | Repairer | Maryland |
| 73 | Rose Griffith | 44 | wife | — | Maryland |
| 74 | Edgar Griffith | 19 | son | Odd Work | Maryland |
| 75 | Alice Griffith | 17 | daughter | Operator | Maryland |
| 76 | Mary Griffith THIS PERSON | 15 | daughter | — | Maryland |
| 77 | Priscilla Griffith | 13 | daughter | — | Maryland |
| 78 | Doris Griffith | 12 | daughter | — | Maryland |
| 79 | Paul Griffith | 11 | son | — | Maryland |
| 80 | Charles Griffith | 10 | son | — | Maryland |
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)