William Smith Monroe (Bill Monroe) - September 13, 1911 – September 9, 1996) was an mandolinist who helped create the style of music known as bluegrass. The genre takes its name from his band, the "Blue Grass Boys", named for Monroe's home state of Kentucky. Monroe's performing career spanned 60 years as a singer, instrumentalist, composer and bandleader. He is often referred to as The Father of Bluegrass.
The picture is that of Bill Monroe taken backstage of the Grand Ole Opry in 1993 with Sharon White (wife of Ricky Staggs) and Rocky Thomas (host of CCMR TV Country).