Lou Marone played for the Pirates in 1969 and 1970, posting a 2.63 ERA in 30 relief appearances. He died some time in 2015.

Message from John D'Acquisto on Facebook:

According to his wife Jill Marone there is a site that says remembering Lou Marone. Also Bob Cluck had mentioned it to me that he had passed away and I believe it was in Henderson NV.
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Bob Addis played briefly for the Pirates in 1953. He died November 15, 2016.

Robert "Bob" Addis passed away on Tuesday, November 15, 2016 at the age of 91. ...

Bob served in the Marine Corps during WWII and then went on to play professional baseball for ten years.
Read more:

http://www.legacy.com/obituaries/new...&pid=182559094