Gerald Patrick (Pat) Devery III, 71, passed away on April 6, 2018, while surrounded by his family at home. Pat was born in Chicago, on March 15, 1947 to Gerald Patrick and Irene (Schmidt) Devery. He grew up in the Chicago suburb of Glen Ellyn, IL, playing varsity football for Fenwick High School. After graduating, he headed to Milwaukee, WI to attend Marquette University. There, he earned a degree in civil engineering and, more importantly, met Terry Flipp, who became the love of his life. Upon graduating, he and Terry wed and lived in Green Bay, WI, Milwaukee, WI, and Warwick, RI, before settling their young family in Lancaster, PA in 1980. Originally drawn to Lancaster by his work for ITT Grinnell, Pat started his own consulting firm, GPD Engineering, in the late 1980s. He was involved in countless land development and construction projects throughout Lancaster County. Outside work, Pat was an avid golfer and was often found on the course with family and friends at Conestoga Country Club, where he was a longtime member. In addition to his wife, Pat is survived by his three children, Christopher, Jennifer, and Matthew (wife Christine), and two grandsons, Colin and Shane. Also, his two sisters, Barbara Gilmartin (husband, T.J.) and Judith Pocius, and four nephews. Pat was preceded in death by his parents and his brother Robert. Funeral services will be held on Saturday, April 21, 2018, at the Charles F. Snyder, Jr. Funeral Home & Crematory, 3110 Lititz Pike, Lititz, PA 17543 with a visitation beginning at 10 a.m., followed by Memorial Services at 11 a.m. In lieu of flowers, contributions may be made in Pat's name to the Lancaster General Health Cancer Patient Support Fund, 609 N. Cherry Street, P.O. Box 3555, Lancaster, PA 17604 or online at https://lancastergeneralhealth.org/makeagift/.