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John Clarke — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Culpeper-County, Virginia
Our Model Tree links this John Clarke across the 1930 and 1940 US Censuses in Culpeper-County, Virginia (XGBoost, ~Confirmed) — first a son (b.~1921), then head of a 9-person household.
Age 19
b. ~1921
Male
Son
Born: Virginia
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Culpeper-County, Virginia |
| Surname | Clarke |
| Given Name | John M. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Virginia |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Rapphk |
| Additional Details | |
| Occupation | Labor |
| Industry | Farm |
| Class of Worker | NP |
| Hours Worked | 40 |
| Income (1939) | 40 |
| Highest Grade | No 5 |
| 1935 Residence | Virginia |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
| Occupation | Labor |
| Township / Ward | Catalpa |
| Est. Birth Year | ~1921 |
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 John | Age | Birth yr |
|---|---|---|---|---|
| Molly Clarke | Other | — | 9 | ~1931 |
| Sally Clarke | Daughter | — | 12 | ~1928 |
| M Clarke | Head | — | 51 | ~1889 |
| John Clarke | Son | — | 19 | ~1921 |
| Marvin Clarke | Son | — | 22 | ~1918 |
| Florine Clarke | Daughter | — | 21 | ~1919 |
| William Clarke | Son | — | 14 | ~1926 |
| Chester Clarke | Son | — | 17 | ~1923 |
| Susie Clarke | Spouse | — | 48 | ~1892 |
Census Appearances
1930
Rappahannock, Virginia
Son, age 9
Rappahannock, Virginia · implied b. ~1921 — 8 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Clarke |
| Given Name | John M |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Virginia |
| Father's Birthplace | Virginia |
| Mother's Birthplace | Virginia |
| Occupation | none |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
1940
Culpeper-County, Virginia
Son, age 19
Culpeper-County, Virginia · implied b. ~1921 — 9 household members
| Surname | Clarke |
| Given Name | John M. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | White |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Virginia |
| 1935 Residence (City) | R |
| 1935 Residence (County) | Rapphk |
| Occupation | Labor |
| Industry | Farm |
| Class of Worker | NP |
| Hours Worked | 40 |
| Income (1939) | 40 |
| Highest Grade | No 5 |
| 1935 Residence | Virginia |
| Birth State | Virginia |
| Birth Country | United States |
| Birthplace (normalized) | virginia |
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 Clarke across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Clarke
Son · 1940 · age 19 · b. ~1921 · Virginia
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Sibling
Florine Clarke
Sibling · 1940 · age 21
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Chester Clarke
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Sally Clarke
Sibling · 1940 · age 12
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marvin Clarke
Sibling · 1940 · age 22
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
William Clarke
Sibling · 1940 · age 14
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 — Culpeper-County, Virginia
Open full size
1940 US Federal Census — Culpeper-County, Virginia
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-04256-00447)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | G. Lawrence Harlow | 27 | Son | Labor | Maryland |
| 42 | Margaret L. Harlow | 20 | Daughter | — | Maryland |
| 43 | Virginia L. Jenkins | 68 | Boarder | Housewife | Virginia |
| 44 | M. G. Clarke | 51 | Head | Farmer | Virginia |
| 45 | Susie Clarke | 48 | Wife | — | Virginia |
| 46 | Marvin Clarke | 22 | Son | Labor | Virginia |
| 47 | Florine Clarke | 21 | Daughter | Sewing | Virginia |
| 48 | John M. Clarke THIS PERSON | 19 | Son | Labor | Virginia |
| 49 | Chester Clarke | 17 | Son | — | Virginia |
| 50 | William Clarke | 14 | Son | — | Virginia |
| 51 | Sally Clarke | 12 | Daughter | — | Virginia |
| 52 | Molly Clarke | 9 | Niece | — | Virginia |
| 53 | Joel A. Dodson | 62 | Head | Repair Work | Virginia |
| 54 | Ester Dodson | 27 | Daughter | — | Virginia |
| 55 | Joel S. Dodson | 26 | Son | Labor | Virginia |
| 56 | Lula Mae Dodson | 21 | Daughter | Sewing | Virginia |
| 57 | Calvin Dodson | 17 | Son | — | Virginia |
| 58 | Molly Dodson | 12 | Daughter | — | Virginia |
| 59 | Tommy Dodson | 2 | Grandson | — | Virginia |
| 60 | W. S. Schofield | 53 | Head | Farmer | Virginia |
| 61 | Sally Schofield | 51 | Wife | — | Virginia |
| 62 | Bryce Schofield | 18 | Nephew | — | West Virginia |
| 63 | Lizzie Rumsey | 73 | Head | — | Virginia |
| 64 | Russell Rumsey | 42 | Son | Farmer | Virginia |
| 65 | Lillie Rumsey | 33 | Daughter | — | Virginia |
| 66 | Debora Rumsey | 12 | Granddaughter | — | Virginia |
| 67 | Joseph F. Shell | 68 | Head | Retired | Georgia |
| 68 | Everett Shell | 34 | Son | Stock Clerk | Virginia |
| 69 | Alloway Shell | 27 | Daughter-in-law | — | Virginia |
| 70 | Samuel Leake | 68 | Head | Farmer | Virginia |
| 71 | Lucy L. Leake | 61 | Wife | — | Virginia |
| 72 | C. Chris Clatterbuck | 49 | Head | Dairy | Virginia |
| 73 | Ruth V. Clatterbuck | 48 | Wife | — | Virginia |
| 74 | F. Gladys Clatterbuck | 20 | Daughter | Stenographer | Virginia |
| 75 | John H. Brown | 66 | Head | Farm | Virginia |
| 76 | Jane B. Brown | 49 | Wife | — | Virginia |
| 77 | Beatrice Brown | 19 | Daughter | Sewing | Virginia |
| 78 | Mary Lee Brown | 17 | Daughter | — | Virginia |
| 79 | William Brown | 15 | Son | Labor | Virginia |
| 80 | Carroll Brown | 13 | Son | — | Virginia |
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)