Marlene M. Zellerino, 73, of Butler passed away on Wednesday, December 8, 2021, surrounded by her family. She was born in Butler on September 17, 1948, to the late George and Clara (Williams) Bayer. Marlene enjoyed cooking for her family and friends, spending time with her family and grandchildren, the casino, bingo, and the Pittsburgh Steelers. She was known to be very family oriented, a devoted catholic, loving, caring, and hardworking. She was known as “GMA” to her beloved grand and great grandchildren. Marlene was the mother of Sharon (Todd) Warburton and Shawn (Christy) Zellerino; sister of Patricia (Albert) Caldwell; grandmother of Derek (Lauran) Warburton, Ashely Darrell, Vincent, Bryce, and Christian Zellerino; and great grandmother of Emma, Gavin, Bow, and Miley. She was preceded in death by her husband John Zellerino who passed away in 2005; brother Donald Bayer; and sister Audrey Shuler. Burial will be held privately at Butler County Memorial Park Cemetery. All arrangements made through the SPENCER D. GEIBEL FUNERAL HOME & CREMATION SERVICES, 140 NEW CASTLE RD, BUTLER, PA 16001. WWW.SPENCERDGEIBEL.COM