MC
Mary Cobb — 1940 US Census Record
Linked across censuses1940 United States Federal Census · Mclean-County, Kentucky
Our Model Tree links this Mary Cobb across the 1930 and 1940 US Censuses in Mclean-County, Kentucky (XGBoost, ~Confirmed) — first a daughter (b.~1927), then head of a 11-person household.
Age 13
b. ~1927
Female
Daughter
Born: Kentucky
Single
1940 Census Record Details
| Census Year | 1940 |
| Location | Mclean-County, Kentucky |
| Surname | Cobb |
| Given Name | Mary Jane |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | Mag. Dist. #1 |
| 1935 Residence (County) | McLean |
| Additional Details | |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
| Township / Ward | Mag Dist 1 |
| 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 Mary | Age | Birth yr |
|---|---|---|---|---|
| Myrtle Cobb | Daughter | — | 1 | ~1939 |
| Price Cobb | Daughter | — | 3 | ~1937 |
| Ben Cobb | Head | — | 48 | ~1892 |
| Mary Cobb | Daughter | — | 13 | ~1927 |
| Betty Cobb | Spouse | — | 42 | ~1898 |
| Randal Cobb | Son | — | 10 | ~1930 |
| Darrell Cobb | Son | — | 15 | ~1925 |
| Weldon Cobb | Son | — | 4 | ~1936 |
| Nelly Cobb | Daughter | — | 9 | ~1931 |
| Norton Cobb | Son | — | 19 | ~1921 |
| Jewell Cobb | Daughter | — | 11 | ~1929 |
Census Appearances
1930
Mclean, Kentucky
Daughter, age 3
Mclean, Kentucky · implied b. ~1927 — 12 household members
●
Primary link
· ~Confirmed · 2 sources
XGBoost
Household
| Surname | Cobb |
| Given Name | Mary Jane |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 3 |
| Marital Status | Single |
| Birthplace | Kentucky |
| Father's Birthplace | Kentucky |
| Mother's Birthplace | Kentucky |
| Can Read/Write | No |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
1940
Mclean-County, Kentucky
Daughter, age 13
Mclean-County, Kentucky · implied b. ~1927 — 11 household members
| Surname | Cobb |
| Given Name | Mary Jane |
| Relationship to Head | Daughter |
| Sex | F |
| Color / Race | White |
| Age | 13 |
| Marital Status | Single |
| Birthplace | Kentucky |
| 1935 Residence (City) | Mag. Dist. #1 |
| 1935 Residence (County) | McLean |
| Highest Grade | No 6 |
| 1935 Residence | Same place |
| Birth State | Kentucky |
| Birth Country | United States |
| Birthplace (normalized) | kentucky |
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 Cobb across 2 US Census years (1930 and 1940) in 2 locations, using XGBoost record linkage.
Show:
This person
Anchor record
Mary Cobb
Daughter · 1940 · age 13 · b. ~1927 · Kentucky
★ You are viewing this record
Sibling
Randal Cobb
Sibling · 1940 · age 10
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Myrtle Cobb
Sibling · 1940 · age 1
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Jewell Cobb
Sibling · 1940 · age 11
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Norton Cobb
Sibling · 1940 · age 19
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Nelly Cobb
Sibling · 1940 · age 9
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Weldon Cobb
Sibling · 1940 · age 4
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Darrell Cobb
Sibling · 1940 · age 15
Source co-child of head (derived)
● Co-child · derived · ~0.88
Sibling
Price Cobb
Sibling · 1940 · age 3
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 — Mclean-County, Kentucky
Open full size
1940 US Federal Census — Mclean-County, Kentucky
Page Contents
40 people indexed on this census page (nara:1940:m-t0627-01336-00471)
| Line | Name | Age | Relation | Occupation | Birthplace |
|---|---|---|---|---|---|
| 41 | Thelman Thelman | 25 | Wife | — | Kentucky |
| 42 | Hubert Leslie Thelman | 3 | Son | — | Kentucky |
| 43 | Isaac Willard Thelman | 1 | Son | — | Kentucky |
| 44 | Emitt Davis | 40 | Head | Farmer | Kentucky |
| 45 | Altia Davis | 36 | Wife | — | Tennessee |
| 46 | Allen Davis | 19 | Son | — | Tennessee |
| 47 | Nellie Lee Davis | 6 | Daughter | — | Kentucky |
| 48 | Roland Miller | 35 | Head | Laborer | Kentucky |
| 49 | Jessie Miller | 35 | Wife | — | Kentucky |
| 50 | John William Miller | 16 | Son | — | Kentucky |
| 51 | Daisy Rose Miller | 10 | Daughter | — | Kentucky |
| 52 | Rignal Smith | 26 | Head | Farmer | Kentucky |
| 53 | Eulipa Smith | 25 | Wife | — | Kentucky |
| 54 | Bobby Rignal Smith | 8 | Son | — | Kentucky |
| 55 | Maryland Doris Smith | 5 | Daughter | — | Kentucky |
| 56 | Betty Lou Smith | 2 | Daughter | — | Kentucky |
| 57 | Boyd Lindal Smith | 1 | Son | — | Kentucky |
| 58 | Amos B. Downs | 53 | Head | Farmer | Kentucky |
| 59 | Mammie Downs | 37 | Wife | — | Kentucky |
| 60 | Ben Cobb | 48 | Head | Farmer | Kentucky |
| 61 | Betty Cobb | 42 | Wife | — | Kentucky |
| 62 | Norton N. Cobb | 19 | Son | Laborer | Kentucky |
| 63 | Darrell Cobb | 15 | Son | — | Kentucky |
| 64 | Mary Jane Cobb THIS PERSON | 13 | Daughter | — | Kentucky |
| 65 | Jewell Cobb | 11 | Daughter | — | Kentucky |
| 66 | Randal Cobb | 10 | Son | — | Kentucky |
| 67 | Nelly Cobb | 9 | Daughter | — | Kentucky |
| 68 | Weldon Cobb | 4 | Son | — | Kentucky |
| 69 | Price Cobb | 3 | Daughter | — | Kentucky |
| 70 | Myrtle Lee Cobb | 1 | Daughter | — | Kentucky |
| 71 | Clayburn Cross | 29 | Head | Farmer | Kentucky |
| 72 | Nellie Cross | 32 | Wife | — | Kentucky |
| 73 | Billy Cross | 4 | Son | — | Kentucky |
| 74 | Edwin Dan Cross | 2 | Son | — | Kentucky |
| 75 | Haynes Bivens | 22 | Head | Farmer | Kentucky |
| 76 | Loutricia Bivens | 22 | Wife | — | Kentucky |
| 77 | Charlotte Ann Bivens | 3 | Daughter | — | Kentucky |
| 78 | Shirlean Bivens | 1 | Daughter | — | Kentucky |
| 79 | Herbert Devine | 43 | Head | Laborer | Kentucky |
| 80 | Addie Devine | 39 | Wife | — | Kentucky |
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)