When did Robert Porterfield die?

Answer 1

George Porter died on August 31, 2002 at the age of 81.

Answer 2

Bob Porterfield died on April 28, 1980, in Charlotte, North Carolina, USA.

Answer 3

Robert Porterfield died on October 28, 1971, in Abingdon, Virginia, USA of heart attack.

Answer 4

Barry Porter died in 1996.

Answer 5

Paul A. Porter died on 1975-11-26.

Answer 6

William D. Porter died on 1864-05-01.