John Karl Weidenbacher, 57, Hollidaysburg, died Sunday at his residence. He was born in East Orange, N.J., son of John W. and Else M. (Mueller) Weidenbacher. He married Irene L. Lowsky on May 17, 1980, in Howell, N.J. Surviving are his wife; two daughters: Jacly Rose and Erina; and a granddaughter. At the request of the deceased, there will be no public viewing. A memorial service will be held at the convenience of the family. Arrangements are by Anthony P. Scaglione Funeral Home, 1908 Seventh Ave., Altoona.