Did Marty Robbins have a sister?

Answer 1

There were two sets of twins. Marty had a twin sister, Mamie, then he had two twin brothers named Harley and Charley. There was also Lillie, Johnny, half brother, Robert Matthew (Pat) and half sister, Anna who had the same mother but a different father. They have all passed away.

Answer 2

Marty came from a large family, I am not sure how many sisters or brothers he had, but Marty was a twin, his twin sister's name is Mammie.

Answer 3

yes her name is Janet, she is younger than Ronnie.