Was Tom Hanks father a member of the diamonds singing group?

Tom Hanks' father, Amos M. Hanks, was not a member of the Diamonds singing group. The Diamonds were a popular vocal group in the 1950s known for songs like "Little Darlin'" and "The Stroll."

It's possible you are thinking of someone else or mistaking information. Tom Hanks' father was a military officer and a longshoreman.