Deanna (Rubenstein) Koch, 71, of West Hartford, formerly of the Bronx, N.Y., died Thursday, August 11. She was the wife of Dr. Lawrence W. Koch. Born in New York, N.Y., she was the daughter of the late Moe and May (Silverstein) Rubenstein. In addition to her husband, she is survived by her children, Randi Beth (Arthur) Daigle of Plymouth, Jonathan Blair Koch of Ft. Lauderdale, Fla., and Jennifer Lynn Koch of Pomfret; her grandchildren, Abigail M. Koch, Jacob M. Daigle, and Lilly G. Koch. She was also predeceased by her brother Howard Rubenstein.