William Theodore Proch, 79, of New Castle, passed away the evening of July 20, 2015. Born November 25, 1935 in New Castle, he was the son of Michael and Mary Chekas Proch. He is survived by his wife of 58 years, Bonnie Louise White Proch whom he married on July 27, 1957. William graduated from Shenango High School in 1954. He then attended Youngstown State University. He was employed for 48 years at LTV Steel as a plant manager, and retired in 2002. William was a member of the Eagles, Shenley Senior Center, and the National Managers Association. He enjoyed dancing, boating, and traveling. Most of all, he loved spending time with his grandchildren. He was a former member of Holy Trinity Ukrainian Orthodox Church, until it's closing. He then became a member of the St. Elias Orthodox Church. In addition to his wife, Bonnie, William is survived by one daughter, Bonnie L. (Andrew) Bakes of Girard OH; two sons, Gary W. (Cheryl) Proch of Parma, OH, and Mark A. Proch of Springville, PA.; one brother, Joseph Proch of New Castle; one sister, Olga Herman of New Castle; 8 grandchildren, Keri Proch Daugherty, Matthew, Zachary, and Kaitlyn Proch, Brandon and Melanie Bakes, Gabriel and Delaney Proch; and 2 great-grandchildren, Ryan Daugherty, and Mason Owen. In addition to his parents, he was preceded in death by four sisters, Mary Russell, Helen Proch, Katherine Yarema, and Irene Miller; four brothers, Leo, John, Michael, and Walter Proch. Visitation will be held on Thursday from 4 to 7 p.m. at the R. Cunningham Funeral Home and Crematory, Inc. 2429 Wilmington Road. A funeral service will take place on Friday at 10:00 a.m. at the St. Elias Antiochian Orthodox Church, 915 Lynn Street, with the Rev. Richard Salley officiating. Burial will be at the St. Nicholas Orthodox Cemetery. Memorial contributions can be made to the St. Elias Antiochian Orthodox Church, 915 Lynn Street, New Castle, PA 16101. Online condolences may be offered at www.cunninghamfh.com