David S. Hauer 1933-2013 David S. Hauer, 79, of San Rafael, died April 12 after a bicycle accident in west Marin. Dave was born in 1933 in Chicago, Illinois and graduated from St. Victor School in Calumet City, Illinois, Campion Jesuit High School in Wisconsin and John Carroll University in Ohio. He was married to Joan for 48 years. In addition to his wife, Dave is survived by his daughters, Karen Hauer of Mill Valley, and Janet Harlow of Corte Madera, his sons-in-law, Salim Islam and John Harlow, and his five grandchildren: Kendall, Courtney and Trevor Islam and Henry and Georgia Harlow. He is also survived by his brother and sister, William (Skip) Hauer and Mary Arden Hauer, both of Colorado. Dave worked for IBM for 30 years as a systems engineer before retiring, after which he launched a second career as a computer programmer. He was a very involved grandfather, attending sports, dance and school events for his grandchildren, whom he adored. He was extraordinarily active as a bicyclist, skier, runner, and handball player. Dave was a lifetime member of the South End Rowing Club and exercised daily at the Marin YMCA. He played bridge his entire adult life and, in the last two years, he discovered Duplicate Bridge, which he played avidly with Joan. A passionate and persistent blood donor, Dave donated over 25 gallons of blood to help those in need. A funeral mass will be held on Friday, April 19 at 10:30 AM at the Church of St. Isabella, One Trinity Way, Terra Linda. In lieu of flowers, the family would appreciate donations in Dave's memory to the Marin YMCA or Blood Centers of the Pacific.