MG
Mary Griffith — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Clearwater-County, Minnesota
Our Model Tree links this Mary Griffith across the 1930 and 1940 US Censuses in Clearwater-County, Minnesota (XGBoost, ~Confirmed) — first a daughter (b.~1927), then head of a 10-person household.
Age 13
b. ~1927
Female
Daughter
Born: Minnesota
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Clearwater-County, Minnesota |
| Surname | Griffith |
| Given Name | Mary H. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | Bear Creek |
| 1935 Residence (County) | Clearwater |
| Additional Details | |
| Highest Grade | 6 |
| 1935 Residence | Same place |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
| Township / Ward | Bear Creek |
| Est. Birth Year | ~1927 |
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.
10 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Mary | Age | Birth yr |
|---|---|---|---|---|
| Jennie Griffith | Daughter | — | 10 | ~1930 |
| Doris Griffith | Daughter | — | 20 | ~1920 |
| Florence Griffith | Daughter | — | 8 | ~1932 |
| Clara Griffith | Daughter | — | 11 | ~1929 |
| Carol Griffith | Daughter | — | 6 | ~1934 |
| Mary Griffith | Daughter | — | 13 | ~1927 |
| Charles Griffith | Head | — | 48 | ~1892 |
| George Griffith | Son | — | 18 | ~1922 |
| Charles Griffith | Son | — | 15 | ~1925 |
| Frank Griffith | Son | — | 17 | ~1923 |
Census Appearances
1930
Clearwater, Minnesota
Daughter, age 3
Clearwater, Minnesota · implied b. ~1927 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Griffith |
| Given Name | Mary H. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Minnesota |
| Father's Birthplace | Indiana |
| Mother's Birthplace | Minnesota |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
1940
Clearwater-County, Minnesota
Daughter, age 13
Clearwater-County, Minnesota · implied b. ~1927 — 10 household members
| Surname | Griffith |
| Given Name | Mary H. |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Minnesota |
| 1935 Residence (City) | Bear Creek |
| 1935 Residence (County) | Clearwater |
| Highest Grade | 6 |
| 1935 Residence | Same place |
| Birth State | Minnesota |
| Birth Country | United States |
| Birthplace (normalized) | minnesota |
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 13 · b. ~1927 · Minnesota
★ You are viewing this record
Sibling
George Griffith
Sibling · 1940 · age 18
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Clara Griffith
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Doris Griffith
Sibling · 1940 · age 20
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jennie Griffith
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Florence Griffith
Sibling · 1940 · age 8
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Charles Griffith
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Carol Griffith
Sibling · 1940 · age 6
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Frank Griffith
Sibling · 1940 · age 17
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 — Clearwater-County, Minnesota
Open full size
1940 US Federal Census — Clearwater-County, Minnesota
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01914-00824)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Hannah A. Althin | 53 | Wife | — | Minnesota |
| 42 | Hazel Althin | 20 | Daughter | Servant | North Dakota |
| 43 | Margaret E. Althin | 17 | Daughter | — | North Dakota |
| 44 | Erwin J. Althin | 15 | Son | — | North Dakota |
| 45 | Eleanor M. Althin | 13 | Daughter | — | Minnesota |
| 46 | Henry C. Wickmark | 49 | Head | Proprietor | Minnesota |
| 47 | Mabel Wickmark | 41 | Wife | — | Wisconsin |
| 48 | Irene E. Wickmark | 17 | Daughter | — | Minnesota |
| 49 | Anna C. Olsen | 56 | Head | Postmaster | North Dakota |
| 50 | John H. Olsen | 80 | Father | — | Norway |
| 51 | Gaylon Overland | 18 | Hired hand | Laborer | Minnesota |
| 52 | Helga Sandum | 39 | Lodger | Teacher | Minnesota |
| 53 | George Bourey | 37 | Head | Truck Driver | South Dakota |
| 54 | Pearl M. Bourey | 34 | Wife | — | Minnesota |
| 55 | Arlene M. Bourey | 16 | Daughter | — | Minnesota |
| 56 | Delores J. Bourey | 13 | Daughter | — | Wisconsin |
| 57 | Shirley A. Bourey | 9 | Daughter | — | Minnesota |
| 58 | Richard G. Bourey | 6 | Son | — | Minnesota |
| 59 | Willard L. Johnson | 36 | Head | Laborer | Minnesota |
| 60 | Ida S. Johnson | 34 | Wife | — | Minnesota |
| 61 | Yvonne Johnson | 8 | Daughter | — | Minnesota |
| 62 | Lauren W. Johnson | 2 | Son | — | Minnesota |
| 63 | Larry F. Johnson | 1 | Son | — | Minnesota |
| 64 | Charles A. Griffith | 48 | Head | Laborer | Indiana |
| 65 | Doris M. Griffith | 20 | Daughter | — | Minnesota |
| 66 | George W. Griffith | 18 | Son | Truck Driver | Minnesota |
| 67 | Frank Griffith | 17 | Son | Laborer | Minnesota |
| 68 | Charles A. Griffith | 15 | Son | Laborer | Minnesota |
| 69 | Mary H. Griffith THIS PERSON | 13 | Daughter | — | Minnesota |
| 70 | Clara J. Griffith | 11 | Daughter | — | Minnesota |
| 71 | Jennie Griffith | 10 | Daughter | — | Minnesota |
| 72 | Florence R. Griffith | 8 | Daughter | — | Minnesota |
| 73 | Carol D. Griffith | 6 | Daughter | — | Minnesota |
| 74 | James A. Gordon | 62 | Head | Proprietor | Minnesota |
| 75 | Edward Gordon | 40 | Son | Salesman | Minnesota |
| 76 | Grace Gordon | 29 | Daughter | — | Minnesota |
| 77 | Joseph Evermore | 37 | Head | Laborer | Minnesota |
| 78 | Mabel O. Evermore | 27 | Wife | — | Minnesota |
| 79 | Lillian O. E. Evermore | 7 | Daughter | — | Minnesota |
| 80 | Grace C. M. Evermore | 4 | Daughter | — | Minnesota |
Related Census Records
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)