Blind Boy Fuller

He was one of the most popular of the recorded Piedmont blues artists

Piedmont blues (also known as East Coast 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.

There is some dispute (see the Wikipedia article above) whether his blindness - complete by 1928 - was caused by ulcers behind the eyes or during a confrontation with a girlfriend.