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John Mcdowell — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Madison-County, Louisiana
Our Model Tree links this John Mcdowell across the 1930 and 1940 US Censuses in Madison-County, Louisiana (XGBoost, ~Confirmed) — first a son (b.~1921), then head of a 11-person household.
Age 19
b. ~1921
Male
Son
Born: Louisiana
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Madison-County, Louisiana |
| Surname | McDowell |
| Given Name | John H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Louisiana |
| 1935 Residence (City) | Ward 8 |
| 1935 Residence (County) | Madison |
| Additional Details | |
| Occupation | Farm hand |
| Industry | Farming |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 0 |
| Highest Grade | G 5 |
| 1935 Residence | Same place |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
| Occupation | Farm Hand |
| Township / Ward | Ward 8 |
| 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.
11 people recorded at the same address in the 1940 census.
| Name | Relation to head | Relative to John | Age | Birth yr |
|---|---|---|---|---|
| John Mcdowell | Son | — | 19 | ~1921 |
| M Mcdowell | Son | — | 13 | ~1927 |
| Willie Mcdowell | Son | — | 19 | ~1921 |
| Marion Mcdowell | Son | — | 17 | ~1923 |
| Ira Mcdowell | Daughter | — | 4 | ~1936 |
| Herman Mcdowell | Son | — | 23 | ~1917 |
| Marion Mcdowell | Head | — | 53 | ~1887 |
| Lizzie Mcdowell | Spouse | — | 50 | ~1890 |
| Centria Mcdowell | Daughter | — | 9 | ~1931 |
| Robert Mcdowell | Son | — | 15 | ~1925 |
| Lessie Mcdowell | Daughter | — | 11 | ~1929 |
Census Appearances
1930
Madison, Louisiana
Son, age 9
Madison, Louisiana · implied b. ~1921 — 15 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | McDowell |
| Given Name | John H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 9 |
| Marital Status | Single |
| Birthplace | Louisiana |
| Father's Birthplace | Louisiana |
| Mother's Birthplace | Louisiana |
| Can Read/Write | No |
| Home Owned/Rented | No |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
1940
Madison-County, Louisiana
Son, age 19
Madison-County, Louisiana · implied b. ~1921 — 11 household members
| Surname | McDowell |
| Given Name | John H. |
| Relationship to Head | Son |
| Sex | M |
| Color / Race | Black |
| Age | 19 |
| Marital Status | Single |
| Birthplace | Louisiana |
| 1935 Residence (City) | Ward 8 |
| 1935 Residence (County) | Madison |
| Occupation | Farm hand |
| Industry | Farming |
| Class of Worker | PW |
| Hours Worked | 40 |
| Income (1939) | 0 |
| Highest Grade | G 5 |
| 1935 Residence | Same place |
| Birth State | Louisiana |
| Birth Country | United States |
| Birthplace (normalized) | louisiana |
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 Mcdowell across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
John Mcdowell
Son · 1940 · age 19 · b. ~1921 · Louisiana
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Sibling
M Mcdowell
Sibling · 1940 · age 13
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Marion Mcdowell
Sibling · 1940 · age 17
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Centria Mcdowell
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Ira Mcdowell
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Robert Mcdowell
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Lessie Mcdowell
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Willie Mcdowell
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Herman Mcdowell
Sibling · 1940 · age 23
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 — Madison-County, Louisiana
Open full size
1940 US Federal Census — Madison-County, Louisiana
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01412-01002)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | David Mcdowell | 12 | Son | — | Louisiana |
| 42 | Annie B. Mcdowell | 10 | Daughter | — | Louisiana |
| 43 | Gertrude Mcdowell | 10 | Daughter | — | Louisiana |
| 44 | Ruby L. Mcdowell | 7 | Daughter | — | Louisiana |
| 45 | Almeta D. Mcdowell | 4 | Daughter | — | Louisiana |
| 46 | Gervis D. Mccall | 32 | Head | Farmer | Mississippi |
| 47 | Louisa Mccall | 26 | Wife | — | Louisiana |
| 48 | Savannah Mccall | 64 | Mother | — | Mississippi |
| 49 | Soloman Key | 21 | Brother | Farmer | Mississippi |
| 50 | Marion Mcdowell | 53 | Head | Farmer | Louisiana |
| 51 | Lizzie D. Mcdowell | 50 | Wife | — | Louisiana |
| 52 | Herman Mcdowell | 23 | Son | Farm Hand | Louisiana |
| 53 | Willie Mcdowell | 19 | Son | Farm Hand | Louisiana |
| 54 | John H. Mcdowell THIS PERSON | 19 | Son | Farm Hand | Louisiana |
| 55 | Marion Jr. Mcdowell | 17 | Son | — | Louisiana |
| 56 | Robert Mcdowell | 15 | Son | — | Louisiana |
| 57 | M. E. Mcdowell | 13 | Son | — | Louisiana |
| 58 | Lessie Mcdowell | 11 | Daughter | — | Louisiana |
| 59 | Centria Mcdowell | 9 | Daughter | — | Louisiana |
| 60 | Ira D. Mcdowell | 4 | Daughter | — | Louisiana |
| 61 | L. M. Mcdowell | 33 | Head | Farmer | Louisiana |
| 62 | Rosie Mcdowell | 25 | Wife | — | Louisiana |
| 63 | Elsie Mcdowell | 11 | Daughter | — | Louisiana |
| 64 | Huey Mcdowell | 9 | Son | — | Louisiana |
| 65 | Eunice Mcdowell | 8 | Daughter | — | Louisiana |
| 66 | Holly Knowles | 85 | Father | — | Louisiana |
| 67 | Sam Mcdowell | 30 | Head | Farmer | Louisiana |
| 68 | Rebecca Mcdowell | 32 | Wife | — | Louisiana |
| 69 | Elzie Mcdowell | 6 | Son | — | Louisiana |
| 70 | Aaron Mcdowell | 5 | Son | — | Louisiana |
| 71 | A. C. Mcdowell | 3 | Son | — | Louisiana |
| 72 | Destha Mcdowell | 1 | Daughter | — | Louisiana |
| 73 | Jack Mcdowell | 28 | Head | Farmer | Louisiana |
| 74 | Willie M. Mcdowell | 25 | Wife | — | Louisiana |
| 75 | Earl Mcdowell | 6 | Son | — | Louisiana |
| 76 | Otis Mcdowell | 4 | Son | — | Louisiana |
| 77 | Gilbert Mcdowell | 1 | Son | — | Louisiana |
| 78 | Reese Cockerham | 46 | Head | Farmer | Louisiana |
| 79 | Georgie Cockerham | 45 | Wife | — | Louisiana |
| 80 | Russell Cockerham | 25 | Son | Farmer | Louisiana |
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)