Joan E. Mercer, 74, of Columbia City, passed away on Saturday, May 30, 2020, at Parkview Hospital.\nBorn in Ann Arbor, MI, on August 10, 1945, to the late Adrian and Hilda (McClean) Bixby. She spent her formative years in Fort Wayne, graduating from Elmhurst High School. Later she graduated from Indiana University in Bloomington.\nJoan was married to Rex P. Mercer in Fort Wayne, on April 27, 1968. The couple lived in Fort Wayne until 1998, when they moved to Big Lake. Joan moved to Columbia City after the death of Rex on February 27, 2004.\nShe worked as a teller at Weatherhead Federal Credit Union, retiring in 2004. She also worked at Fort Wayne National prior to Weatherhead.\nJoan was a member of the Veteran's National Memorial Shrine on O Day Road.\nJoan is survived by her daughter, Lisa (Mark) Doehrman; her son, Rex (Melissa) Mercer; a sister, Penny Bixby; three grandchildren, Weston (Jennifer) Doehrman, Laura and Brandon Doehrman; a great-grandson, Martin Doehrman.\nIn addition to her husband and parents, she was preceded by a brother, Dan Bixby; a great-grandson, Emmet Doehrman.\nServices will take place at St. John Lutheran Church, 2465 W. Keiser Road, Columbia City, on Wednesday, June 3, 2020, at 1:00 p.m.\nFamily will receive friends on Wednesday, from 11:00 a.m., to the start of the service.\nBurial taking place at Christian Chapel Cemetery, Merriam.\nIn Lieu of flowers, please direct memorials to the Veteran's National Memorial Shrine, O Day Road.\nOnline note to the family at www.sheetsandchilds.com.