Piedmont blues (also known as East Coast, or Southeastern blues) refers primarily to a guitar style, the Piedmont fingerstyle, which is characterized by a fingerpicking approach in which a regular, alternating thumb bass string rhythmic pattern supports a syncopated melody using the treble strings generally picked with the fore-finger, occasionally others.
 The result is comparable in sound to ragtime or stride piano styles.
Lindsey Adams Buckingham (born October 3, 1949) is an American musician, singer, songwriter, and producer, best known as lead guitarist and one of the vocalists of the musical group Fleetwood Mac from 1975 to 1987, and then 1997 to the present day.
 Aside from his tenure with Fleetwood Mac, Buckingham has also released six solo albums and three live albums.
 As a member of Fleetwood Mac, he was inducted into the Rock and Roll Hall of Fame in 1998.
 In 2011, Buckingham was ranked 100th in Rolling Stone Magazine's 2011 list of "The 100 Greatest Guitarists of All Time".
 Buckingham is known for his fingerpicking guitar style.
Merle Robert Travis (November 17, 1917 – October 20, 1983) was an American country and western singer, songwriter, and guitarist born in Rosewood, Kentucky.
 His song's lyrics often discussed both the lives and the economic exploitation of American coal miners.
 Among his many well-known songs are "Sixteen Tons," "Re-Enlistment Blues," "I am a Pilgrim," and "Dark as a Dungeon."
 However, it is his unique guitar style, still called Travis Picking by guitarists, as well as his interpretations of the rich musical traditions of his native Muhlenberg County, Kentucky, for which he is best known today. "
Travis Picking" is a syncopated style of guitar fingerpicking rooted in ragtime music in which alternating chords and bass notes are plucked by the thumb while melodies are simultaneously plucked by the index finger.
 He was inducted into the Nashville Songwriters Hall of Fame in 1970 and elected to the Country Music Hall of Fame in 1977.
Fingerstyle guitar is the technique of playing the guitar by plucking the strings directly with the fingertips, fingernails, or picks attached to fingers, as opposed to flatpicking (plucking individual notes with a single plectrum, commonly called a "pick").
 The term "fingerstyle" is something of a misnomer, since it is present in several different genres and styles of music—but mostly, because it involves a completely different technique, not just a "style" of playing, especially for the guitarist's picking/plucking hand.
 The term is often used synonymously with fingerpicking, although fingerpicking can also refer to a specific tradition of folk, blues and country guitar playing in the US.
 See below.
Patrick Donohue (born April 28, 1953) is an American fingerstyle guitarist born in St. Paul, Minnesota.
 He is a Grammy nominated, National Fingerpicking Guitar Champion songwriter.
 Donohue has several albums to his credit and his songs have been recorded by Chet Atkins, Suzy Bogguss, and Kenny Rogers.
 He has performed on "A Prairie Home Companion" for several years, both as a member of the house band and as a featured artist.
Harvey Reid is a musician living in York, Maine.
 He won the 1981 National Fingerpicking Guitar Competition and the 1982 International Autoharp competition.
 In 1996, Acoustic Guitar magazine listed Harvey's album "Steel Drivin' Man" as one of the top ten essential folk albums/CDs of all time.
 He has 19 records available from Woodpecker Records.
Alastair Moock (born 1973, New York, New York, United States) is a GRAMMY-nominated American folk and family music performer from Boston, Massachusetts.
 He is known for his gruff voice, playful lyrics, and fingerpicking guitar style.
Reverend Gary Davis, also Blind Gary Davis (born Gary D. Davis, April 30, 1896 – May 5, 1972), was a blues and gospel singer who was also proficient on the banjo, guitar and harmonica.
 His fingerpicking guitar style influenced many other artists.
 His students include Stefan Grossman, David Bromberg, Steve Katz, Roy Book Binder, Larry Johnson, Nick Katzman, Dave Van Ronk, Rory Block, Ernie Hawkins, Larry Campbell, Bob Weir, Woody Mann, and Tom Winslow.
 He influenced Bob Dylan, the Grateful Dead, Wizz Jones, Jorma Kaukonen, Keb' Mo', Ollabelle, Resurrection Band, and John Sebastian (of the Lovin' Spoonful).
Thomasina Winslow is an American blues musician from the Albany, New York area, and the daughter of folk musician Tom Winslow.
 As a toddler, she sang back-up on her father's folk music classic "Hey Looka Yonder (It's The Clearwater"); also singing a solo version of "One-Two-Three", another version of which she produced on her own 30 years later.
 In addition to her solo career, Winslow has been a member of four bands, including a duo with Nick Katzman.
 Furthermore, she has been a teacher in that genre of music, and has significantly influenced other aspiring musicians.
 Winslow primarily performs covers of Blues standards and has written a number of blues and gospel tunes in her own right.
 She is also one of a handful of African-American women producers in the "indy" music industry today.
Thomas Griffin "Tom" Winslow (November 13, 1940, Hobgood, North Carolina – October 23, 2010, Albany, New York) was a prominent American folk singer and writer, best known as a "disciple" of Reverend Gary Davis and a former member of Pete Seeger's band.
 He performed with his family as The Winslows and recorded with Al Polito.
 His career as a performing artist lasted over forty years.
 He was most notable as the composer of "Hey Looka Yonder (It's The Clear Water)", a folk song that has been the anthem of the "Sloop Clearwater".

Question: Tom Winslow was the student of what blues and gospel singer known for his fingerpicking guitar style?
Answer: Reverend Gary Davis