CS
Calvin Smith — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Frederick-County, Maryland
Our Model Tree links this Calvin Smith across the 1930 and 1940 US Censuses in Frederick-County, Maryland (XGBoost, ~Confirmed) — first a son (b.~1927), then head of a 11-person household.
Age 13
b. ~1927
Male
Son
Born: Maryland
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Frederick-County, Maryland |
| Surname | Smith |
| Given Name | Calvin |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Hauvers District Election District 10 Hauvers |
| 1935 Residence (County) | Frederick |
| Additional Details | |
| Highest Grade | 6 |
| 1935 Residence | Same place |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
| Township / Ward | Hauvers District Election District 10 Hauvers |
| 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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to Calvin | Age | Birth yr |
|---|---|---|---|---|
| Calvin Smith | Son | — | 13 | ~1927 |
| Elwood Smith | Son | — | 2 | ~1938 |
| Irene Smith | Daughter | — | 16 | ~1924 |
| Hazel Smith | Daughter | — | 7 | ~1933 |
| Virginia Smith | Daughter | — | 11 | ~1929 |
| William Smith | Head | — | 56 | ~1884 |
| William Toms | Other | — | 77 | ~1863 |
| Beulah Smith | Daughter | — | 5 | ~1935 |
| John Smith | Son | — | 1 | ~1939 |
| Edith Smith | Spouse | — | 34 | ~1906 |
| Edna Smith | Daughter | — | 14 | ~1926 |
Census Appearances
1930
Frederick, Maryland
Son, age 3
Frederick, Maryland · implied b. ~1927 — 9 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Smith |
| Given Name | Calvin W |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Maryland |
| Father's Birthplace | Maryland |
| Mother's Birthplace | Maryland |
| Birth State | Maryland |
| Birth Country | United States |
| Birthplace (normalized) | maryland |
1940
Frederick-County, Maryland
Son, age 13
Frederick-County, Maryland · implied b. ~1927 — 11 household members
| Surname | Smith |
| Given Name | Calvin |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Maryland |
| 1935 Residence (City) | Hauvers District Election District 10 Hauvers |
| 1935 Residence (County) | Frederick |
| Highest Grade | 6 |
| 1935 Residence | Same place |
| 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 Calvin Smith across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Calvin Smith
Son · 1940 · age 13 · b. ~1927 · Maryland
★ You are viewing this record
Sibling
Edna Smith
Sibling · 1940 · age 14
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Hazel Smith
Sibling · 1940 · age 7
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Elwood Smith
Sibling · 1940 · age 2
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
John Smith
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Virginia Smith
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Irene Smith
Sibling · 1940 · age 16
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Beulah Smith
Sibling · 1940 · age 5
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 — 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-t0627-01549-00121)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 1 | Warren Wolf | 19 | Son | Laborer | Maryland |
| 2 | Lawrence Wolf | 44 | Head | Carpenter | Maryland |
| 3 | Goldie Wolf | 37 | Wife | — | Maryland |
| 4 | Eugene Wolf | 9 | Son | — | Maryland |
| 5 | Lewis Mcpherson | 42 | Head | Farmer | Alabama |
| 6 | Esther Mcpherson | 42 | Wife | — | Maryland |
| 7 | George Mcpherson | 14 | Son | — | Maryland |
| 8 | John Mcpherson | 12 | Son | — | Maryland |
| 9 | Harold Mcpherson | 11 | Son | — | Maryland |
| 10 | Mary Mcpherson | 7 | Daughter | — | Maryland |
| 11 | Ruth Mcpherson | 2 | Daughter | — | Maryland |
| 12 | Harvey E. Pryor | 48 | Head | Laborer | Maryland |
| 13 | Emma Pryor | 46 | Wife | — | Pennsylvania |
| 14 | Margaret Pryor | 24 | Daughter | — | Maryland |
| 15 | Hilda Pryor | 13 | Daughter | — | Maryland |
| 16 | Anna May Pryor | 11 | Daughter | — | Maryland |
| 17 | William A. Smith | 56 | Head | Farmer | Maryland |
| 18 | Edith Smith | 34 | Wife | — | Maryland |
| 19 | Irene Smith | 16 | Daughter | — | Maryland |
| 20 | Edna Smith | 14 | Daughter | — | Maryland |
| 21 | Calvin Smith THIS PERSON | 13 | Son | — | Maryland |
| 22 | Virginia Smith | 11 | Daughter | — | Maryland |
| 23 | Hazel Smith | 7 | Daughter | — | Maryland |
| 24 | Beulah Smith | 5 | Daughter | — | Maryland |
| 25 | Elwood Smith | 2 | Son | — | Maryland |
| 26 | John Smith | 1 | Son | — | Maryland |
| 27 | William Toms | 77 | Father-in-law | — | Maryland |
| 28 | Crawford Bumbaugh | 48 | Head | Laborer | Pennsylvania |
| 29 | Eva Bumbaugh | 45 | Wife | — | Maryland |
| 30 | Calvin Bumbaugh | 19 | Son | Laborer | Maryland |
| 31 | Edgar Bumbaugh | 16 | Son | Helper | Maryland |
| 32 | Edna Bumbaugh | 16 | Daughter | — | Maryland |
| 33 | Ruth Bumbaugh | 12 | Daughter | — | Maryland |
| 34 | Albert Bumbaugh | 10 | Son | — | Maryland |
| 35 | Glenn Bumbaugh | 5 | Son | — | Maryland |
| 36 | Betty Jane Bumbaugh | 1 | Granddaughter | — | Maryland |
| 37 | Ralph Buhrman | 29 | Head | Farmer | Maryland |
| 38 | Sadie Buhrman | 22 | Wife | — | Pennsylvania |
| 39 | Josephine Buhrman | 1 | Daughter | — | Maryland |
| 40 | Guy Buhrman | 22 | Brother | Farmer | 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)