Margaret Mary Murtha Klau, 68, of Avon, died April 3. She was the wife of Arnold H. Klau. Born in Hartford, she was the daughter of Edward Bernard and Victoria Murawski Murtha. In addition to her husband, she is survived by her children, Ira Palten Klau and his wife Shelly of Southington, Amy Victoria Morneault-Mentz and her husband Brian of Jacksonville, Vt., Rachel Klau Sandage and her husband David of Forest Grove, Ore., and Benjamin Baruch Klau and his wife Joan of San Francisco, Calif.; and her grandchildren, Connor Morneault-Jaroncyk, Samuel and Sidney Klau, and Joshua and Timothy Sandage.