Tonker, William H. On Thursday, February 24, 1983, William H. Tonker, the beloved husband of Helen L. Tonker, father of Juanita G. Hudson and Helen D. Williams; also survived by six grandchildren and four great-grandchildren. Friends may call at The George P. Kalas Funeral Home, 6160 Oxon Hill Road, Oxon Hill, Md., on Saturday and Sunday, from 2 to 4 and 7 to 9 p.m., where services will be held on Monday, February 28, at 10 a.m. Interment Congressional Cemetery.