Dan C. Haggerty, 63 of Washington passed away on October 23, 2017 in the VA Hospital Aspinwall, following a lengthy illness. He was born May 7, 1954 in Franklin, PA a son of the late Ralph and Dorothy Haggerty. Dan attended Mount Lake Terrace High School near Seattle, Washington and graduated from Seneca Valley High School in Zelienople. Dan proudly served his country with the United States Navy from 1972 until his honorable discharge in 1975 as a Yeoman Petty Officer 3rd Class aboard the USS Hancock. He worked at Bethlehem Mines and the PA Department of Corrections. Dan enjoyed camping, bowling in numerous local leagues, golfing, traveling, going to car shows, playing dartball in the church league, and especially spending time with family. He was a member of the East Buffalo Presbyterian Church where he served as an elder as well as other various committees. On July 24, 1976 he married Nancy L. Lobaugh, who survives. Also surviving in additon to his wife of 41 years are a daughter, Amy (Zachary) O’Brien; son, Daniel (Caitlin) Haggerty; two brothers, James Haggerty and Jeffrey (Michele) Haggerty; loving Pap Pap to Harper & Charlotte O’Brien and Madison Haggerty; special brothers and sisters-in-law, nieces and nephews, cousins, and his church family. He also leaves behind his dog, Fritter. Deceased, in addition to his parents, is a brother, Ralph Haggerty. A memorial service will be held on Saturday, October 28, 2017 at 1:00 PM at East Buffalo Presbyterian Church, 180 East Buffalo Church Road, Washington , PA 15301 Private interment will be held at a later date in the National Cemetery of the Alleghenies. In lieu of flowers, memorial donations may be made to the East Buffalo Presbyterian Church Building Fund at 180 East Buffalo Church Road, Washington , PA 15301 or to the charity of the donors choice.