"Uncle Pen" is a song written by Bill Monroe

Bill Monroe

William Smith Monroe was an American musician who created the style of music known as bluegrass, which 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...

 about his uncle and musical mentor, Pendleton Vandiver

Pendleton Vandiver

James Pendleton Vandiver was a Kentucky fiddler, born there shortly after the American Civil War. He was uncle to bluegrass musician Bill Monroe, who immortalized him in a song, "Uncle Pen"....

. Besides Monroe, the song was recorded by Porter Wagoner

Porter Wagoner

Porter Wayne Wagoner was a popular American country music singer known for his flashy Nudie and Manuel suits and blond pompadour. He introduced the young Dolly Parton near the beginning of her career on his long-running television show, and they were a well-known duet throughout the late 1960s and...

 in 1956 and Ricky Skaggs

Ricky Skaggs

Rickie Lee "Ricky" Skaggs is a country and bluegrass singer, musician, producer, and composer. He primarily plays mandolin; however, he also plays fiddle, guitar, and banjo.-Early career:...

in 1984. "Uncle Pen" was Ricky Skaggs ninth number one single on the country chart. The single went to number one for one week and spent a total of thirteen weeks on the country chart .

Porter Wagoner

Chart (1956)	Peak position
U.S. Billboard Hot Country Singles	14

Ricky Skaggs

Chart (1984)	Peak position
U.S. Billboard Hot Country Singles	1
Canadian RPM Country Tracks	1