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Frederick David Quillan (born January 27, 1956 in Portland, Oregon) is a former professional American football offensive lineman, playing for the San Francisco 49ers from 1978 through 1987. During that span he appeared in two Super Bowls: Super Bowl XVI and Super Bowl XIX, and was selected All-Pro in 1984 and 1985. He played college football at the University of Oregon. He has three children: Kyle, Kenneth, and Colby.