Per CCPP; not independently verified:

Some info from "Claiborne Co., TN Obituary Book - Vol. 3 - 1940 to 1949" by Mark Treadway
LOOP, W. H. - Feb. 8, 1951

W. H. Loop, 71, died at the Middlesboro Hospital on Feb. 3, 1951. Survivors: wife Mrs. Mary Loop of Lone Mountain; daughters Mrs. Elsie Rosenbalm of Tazewell, Mrs. C. L. Eagle and Mrs. Jane Bush of Whitenburg; sister Mrs. James Walker of Knoxville. Funeral services were held at the Sugar Grove Baptist Church on Monday at 2:00 p.m. with Rev. Henry Surber and Rev. Sam Coffey officiating. Interment in the Campbell Cemetery. Coffey Stubblefield in charge.
==
1900 Census, Claiborne County, Tennessee, ED 190, District 10, dwelling & family 55:
Loop, William, head, male, born February 1880, age 20, married 0, TN, VA, TN, farm, illiterate, rents farm, farm schedule 55
___, Marrie, wife, female, born October 1881, 19, married 0, no children yet, TN, TN, TN, can read not write
Enumerated 6 June 1900 by Daniel C. Yoakum; both white, speak English.

1910 Census, Claiborne County, Tennessee, CD 3, SD 1, ED 20, page 67, dwelling 98, family 99:
Loop, William H., head, male, 30, married once 10 years, farmer, general farm, own account, unemployed 4 months (not now, can read not write, owns farm, no mortgage, schedule 71
___, Mary, wife, female, 29, married once for 10 years, 4 children, 4 living, literate
___, Elsie, daughter, female, 7, single
___, Oma, daughter, female, 5, single
___, Fleda, daughter, female, 3, single
___, Howard L., son, male, 6/12, single
Enumerated 27 April 1910 by Joseph S. Yoakum; all white, literate, speak English, born in Tennessee, parents in Tennessee unless noted.

1920 Census, Claiborne County, Tennessee, CD 3, SD 1, ED 25, page 80, dwelling & family 140:
Loop, William H., head, owns farm, no mortgage, 39, married, literate, farmer, general farm, own account, schedule 95
___, Mary, wife, female, 39, married, literat
___, "Flita", daughter, female, 13, single, in school
___, Howard, son, male, 10, single, in school
Enumerated 9 January 1920 by William B. Jennings; all white, literate, speak English, born in Tennessee, parents in Tennessee.

• Married: ABT 1900 in (prob) Claiborne County, Tennessee ^{15 16 17}

1. Elsia Gertrude Loope b: 19 OCT 1902 in (prob) Claiborne County, Tennessee
2. Oma Loope b: ABT 1905 in (prob) Claiborne County, Tennessee
3. Fleatie A. Loope b: 31 OCT 1906 in (prob) Claiborne County, Tennessee
4. Howard Leo Loope b: 6 NOV 1909 in Lone Mountain, Claiborne County, Tennessee

1. Title: United States Census - 1880
   Note: The 1880 Census was the first to specifically ask for the relationships of each household member to the head of household and also included birthplaces of mother and father as well as other additional information. The likely errors of earlier censuses also applied in 1880. The enumeration date was 1 June 1880.
   Repository:
   Note: National Archives and Records Administration
   Media: Microfilm
   Page: Claiborne County, Tennessee, ED 190, District 10, dwelling 48, family 49
   Text: see his father's notes
2. Title: Death Certificate: William H. Loop
   Publication: Bell County, Kentucky, 1926, Get: Bell County, Kentucky, #4036 & #1586
   Note: Image from Ancestry.com; informant was his wife on 4036; not listed on the other. No major differences unless noted in individual citations.
   Repository:
   Media: Official Document
   Text: son of John Loop and Lucy Jane Walker
3. Title: Cemeteries of Claiborne County, Tennessee
   Author: Johnson, Paul
   Publication: Tazewell, Tennessee: privately published, 1982
   Note: Vital statistics gleaned from tombstones in Claiborne County; a very good list but incomplete. Address of author: Route 4, Box 183, Tazewell 37879.
   Note: Subject to transcription errors and missed tombstones
   Repository:
   Note: Library of Congress
   Media: Book
   Page: 31
   Text: William L. Loop, 7 February 1880-3 February 1951, Campbell Cemetery, Bear Creek
4. Title: United States Census - 1900
   Note: The 1900 Census added a great deal of information, such as the exact month and year of birth, years married, and a number of other elements. The enumeration date was 1 June 1900.
   Repository:
   Note: National Archives and Records Administration
   Media: Microfilm
   Page: Claiborne County, Tennessee, ED 190, District 10, dwelling & family 55
   Text: born February 1880 in Tennessee
5. Title: United States Census - 1910
   Note: The 1910 Census actually contains a bit less data than the 1900 Census. The enumeration date changed to 15 April 1910.
   Repository:
   Note: National Archives and Records Administration
   Media: Microfilm
   Page: Claiborne County, Tennessee, CD 3, SD 1, ED 20, page 67, dwelling 98, family 99
   Text: age 30, born in Tennessee
6. Title: United States Census - 1920
   Note: The enumeration date was 1 January 1920.
   Repository:
   Note: National Archives and Records Administration
   Media: Microfilm
   Page: Claiborne County, Tennessee, CD 3, SD 1, ED 25, page 80, dwelling & family 140
   Text: age 39, born in Tennessee
7. Title: Death Certificate: William H. Loop
   Publication: Bell County, Kentucky, 1926, Get: Bell County, Kentucky, #4036 & #1586
   Note: Image from Ancestry.com; informant was his wife on 4036; not listed on the other. No major differences unless noted in individual citations.
   Repository:
   Media: Official Document
   Text: born 7 February 1880 in Claiborne County, Tennessee
8. Title: World War 1 Draft Registration Cards, 1917-1918
   Publication: Ancestry.com, Provo, Utah, 2005
   Note: Original data: United States, Selective Service System. World War I Selective Service System Draft Registration Cards, 1917-1918. Washington, D.C.: National Archives and Records Administration. M1509, 4,582 rolls.
   Repository:
   Media: Electronic
   Page: William Hugh Loop, Claiborne County, Tennessee
   Text: was illiterate, so spelling of name on card irrelevant; born 7 February 1880
9. Title: Claiborne County Tennessee Obituary Book, Vol. 3, 1950-1954
   Author: Treadway, Mark and Phyllis
   Publication: Monroe, Michigan: privately published
   Note: Obituaries from Claiborne County, namely the Claiborne Progress. All obituaries which are cited herein without page numbers were supplied by the Claiborne County Pioneer Project and have not been independently verified; they are copied as provided into the notes of the individuals.
   Note: Not independently verified and not well-edited; original newspapers should be consulted
   Repository:
   Note: McClung Library, Knoxville, Tennessee
   Media: Book
   Text: see his notes
10. Title: Kentucky Vital Records Index
    Author: University of Kentucky
    Note: Online search of death (1911-1998), marriage (1973-1993), and divorce (1973-1993) records.
    Note: Subject to transcription errors, unfiled certificates, and other errors
    Repository:
    Note: http://ukcc.uky.edu/~vitalrec/
    Media: Electronic
    Text: Two records for William Loop on 3 Febraury 1951, both in Bell County, residence Tennessee: age 69, volume 009, certificate 04036, death volume 51; and age 70, volume 004, certficate 01586, death volume 51
11. Title: Death Certificate: William H. Loop
    Publication: Bell County, Kentucky, 1926, Get: Bell County, Kentucky, #4036 & #1586
    Note: Image from Ancestry.com; informant was his wife on 4036; not listed on the other. No major differences unless noted in individual citations.
    Repository:
    Media: Official Document
    Text: died 3 February 1951 in Middlesboro Hospital, Middlesboro, Bell County, Kentucky
12. Title: Death Certificate: William H. Loop
    Publication: Bell County, Kentucky, 1926, Get: Bell County, Kentucky, #4036 & #1586
    Note: Image from Ancestry.com; informant was his wife on 4036; not listed on the other. No major differences unless noted in individual citations.
    Repository:
    Media: Official Document
    Text: died intestinal obstruction due to arteriosclerotic cardiovascular hypertension; cause of obstruction was unclear
13. Title: Death Certificate: William H. Loop
    Publication: Bell County, Kentucky, 1926, Get: Bell County, Kentucky, #4036 & #1586
    Note: Image from Ancestry.com; informant was his wife on 4036; not listed on the other. No major differences unless noted in individual citations.
    Repository:
    Media: Official Document
    Text: buried in Campbell Cemetery in Claiborne County, Tennessee
14. Title: World War 1 Draft Registration Cards, 1917-1918
    Publication: Ancestry.com, Provo, Utah, 2005
    Note: Original data: United States, Selective Service System. World War I Selective Service System Draft Registration Cards, 1917-1918. Washington, D.C.: National Archives and Records Administration. M1509, 4,582 rolls.
    Repository:
    Media: Electronic
    Page: William Hugh Loop, Claiborne County, Tennessee
    Text: medium height and build, blue eyes, light hair
15. Title: United States Census - 1900
    Note: The 1900 Census added a great deal of information, such as the exact month and year of birth, years married, and a number of other elements. The enumeration date was 1 June 1900.
    Repository:
    Note: National Archives and Records Administration
    Media: Microfilm
    Page: Claiborne County, Tennessee, ED 190, District 10, dwelling & family 55
    Text: married 0 years
16. Title: United States Census - 1910
    Note: The 1910 Census actually contains a bit less data than the 1900 Census. The enumeration date changed to 15 April 1910.
    Repository:
    Note: National Archives and Records Administration
    Media: Microfilm
    Page: Claiborne County, Tennessee, CD 3, SD 1, ED 20, page 67, dwelling 98, family 99
    Text: both married once for 10 years
17. Title: World War 1 Draft Registration Cards, 1917-1918
    Publication: Ancestry.com, Provo, Utah, 2005
    Note: Original data: United States, Selective Service System. World War I Selective Service System Draft Registration Cards, 1917-1918. Washington, D.C.: National Archives and Records Administration. M1509, 4,582 rolls.
    Repository:
    Media: Electronic
    Page: William Hugh Loop, Claiborne County, Tennessee
    Text: nearest relative is Mary Loop, exact relationship not stated