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John Grimes — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Frederick-County, Maryland
Our Model Tree links this John Grimes across the 1930 and 1940 US Censuses in Frederick-County, Maryland (XGBoost, ~Confirmed) — first a head (b.~1883), then head of a 8-person household.
Age 57
b. ~1883
Male
Head
Born: Maryland
Married
1940 Census Record Details
| Census Year | 1940 |
| Location | Frederick-County, Maryland |
| Surname | Grimes |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Frederick |
| Additional Details | |
| Occupation | Farmer |
| Industry | Own Farm |
| Class of Worker | OA |
| Hours Worked | 72 |
| Income (1939) | 0 |
| Highest Grade | No 5 |
| 1935 Residence | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Occupation | Farmer |
| Township / Ward | Election District 20 |
| Est. Birth Year | ~1883 |
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.
8 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| Charles Grimes | Son | — | 27 | ~1913 |
| Gilmore Burrier | Other | — | 21 | ~1919 |
| Eleanor Jones | Other | — | 24 | ~1916 |
| Florence Grimes | Spouse | — | 49 | ~1891 |
| John Grimes | Head | — | 57 | ~1883 |
| Erma Grimes | Daughter | — | 8 | ~1932 |
| Dorothy Grimes | Daughter | — | 15 | ~1925 |
| Ella Grimes | Daughter | — | 19 | ~1921 |
Census Appearances
1930
Frederick, Maryland
Other, age 47
Frederick, Maryland · implied b. ~1883 — 19 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Grimm |
| Given Name | John H |
| Relationship to Head | O |
| Sex | M |
| Color / Race | White |
| Age | 47 |
| Marital Status | Married |
| Birthplace | Maryland |
| Age at First Marriage | 27 |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Occupation | Baker |
| Industry | In bakery |
| Class of Worker | W |
| Can Read/Write | Yes |
| Radio Set | R |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Frederick-County, Maryland
Head, age 57
Frederick-County, Maryland · implied b. ~1883 — 8 household members
| Surname | Grimes |
| Given Name | John |
| Relationship to Head | Head |
| Sex | M |
| Color / Race | White |
| Age | 57 |
| Marital Status | Married |
| Birthplace | Maryland |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Frederick |
| Occupation | Farmer |
| Industry | Own Farm |
| Class of Worker | OA |
| Hours Worked | 72 |
| Income (1939) | 0 |
| Highest Grade | No 5 |
| 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 John Grimes across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
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This person
Anchor record
John Grimes
Head · 1940 · age 57 · b. ~1883 · Maryland
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Confirmed / household (~0.90+)
Probable / derived (~0.65–0.89)
Candidate (<0.65, unverified)
Original Census Page
1940 US Federal Census — Frederick-County, Maryland
Open full size
1940 US Federal Census — Frederick-County, Maryland
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01549-00537)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Edna Durcell | 48 | Wife | — | Maryland |
| 42 | Alberta Durcell | 22 | Daughter | — | Penn |
| 43 | Daniel Staley | 55 | Head | Farmer | Maryland |
| 44 | Mamie Staley | 46 | Wife | — | Maryland |
| 45 | Armatha Staley | 1 | Daughter | — | Maryland |
| 46 | John Grimes THIS PERSON | 57 | Head | Farmer | Maryland |
| 47 | Florence Grimes | 49 | Wife | — | Maryland |
| 48 | Charles Grimes | 27 | Son | Truck Driver | Maryland |
| 49 | Ella Grimes | 19 | Daughter | — | Maryland |
| 50 | Dorothy Grimes | 15 | Daughter | — | Maryland |
| 51 | Erma Grimes | 8 | Daughter | — | Maryland |
| 52 | Eleanor Jones | 24 | Lodger | Seamstress | Maryland |
| 53 | Gilmore Burrier | 21 | Hired man | Farm Hand | Maryland |
| 54 | Leslie Wachter | 45 | Head | Farmer | Maryland |
| 55 | Margaret Wachter | 35 | Wife | — | Maryland |
| 56 | Katherine Wachter | 16 | Daughter | — | Maryland |
| 57 | Edward Wachter | 14 | Son | — | Maryland |
| 58 | Irolia Wachter | 11 | Son | — | Maryland |
| 59 | Vergie Wachter | 9 | Daughter | — | Maryland |
| 60 | Judith Wachter | 0 | Daughter | — | Maryland |
| 61 | Walter Thalt | 63 | Head | Farmer | Maryland |
| 62 | Mae Thalt | 61 | Wife | — | Maryland |
| 63 | Louis Martz | 43 | Head | Farmer | Maryland |
| 64 | Kathleen Martz | 43 | Wife | — | Maryland |
| 65 | Louis Jr Martz | 15 | Son | — | Maryland |
| 66 | Mamie Stull | 56 | Head | Farm Manager | Maryland |
| 67 | Floyd Stull | 20 | Son | Farm Hand | Maryland |
| 68 | Ellen Stull | 18 | Daughter | — | Maryland |
| 69 | Samuel Summers | 51 | Head | Farmer | Maryland |
| 70 | Ellen Summers | 17 | Son | Farm Hand | Maryland |
| 71 | Samuel Jr Summers | 15 | Son | Farm Hand | Maryland |
| 72 | Monroe Smith | 25 | Son in law | Farm Hand | Maryland |
| 73 | Helen Smith | 19 | Daughter | — | Maryland |
| 74 | Charles Stull | 46 | Head | Music Teacher | Maryland |
| 75 | Mary Stull | 39 | Wife | — | Maryland |
| 76 | Margaret Stull | 18 | Daughter | — | Maryland |
| 77 | Charles Jr Stull | 17 | Son | — | Maryland |
| 78 | Ruth Stull | 9 | Daughter | — | Maryland |
| 79 | Harvey Krantz | 54 | Head | Farmer | Maryland |
| 80 | Cordelia Krantz | 51 | Wife | — | 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)