Bill Tremel pitched for the Cubs from 1954 to 1956. He was a perfect 3-0 with a 3.72 ERA in 23 appearances in 1955.

TREMEL – William L., 84, Altoona, died peacefully Sunday, Dec. 22, 2013, at Presbyterian Home, Hollidaysburg, after a brief illness. ...

He was a professional baseball player for the Chicago Cubs, Shreveport Sports (Texas League), Los Angeles and Portland in the Pacific Coast League.
Read more:

http://www.tribune-democrat.com/obit...lliam-L-Tremel

__

Ellis Burton played for the Cubs from 1963 to 1965. He hit 12 home runs for the team in 1963, one of four players on the squad to have 10 or more dingers that year.

This is all that available regarding his passing:

Ellis Burton
(August 12, 1936 - October 1, 2013)
Read more:

http://www.meaningfulfunerals.net/fh...98&fh_id=14351

__

Preston Ward was a Cub in 1950 and 1953. He was the team's primary first baseman in 1950, hitting .253 with six home runs and 33 RBI in 80 games that season.

There is no real article for Ward, just this:

In Memory of
Preston Meyer Ward
July 24, 1927 - June 2, 2013
http://obits.dignitymemorial.com/dig...f-a089597f30fd