Merwin R. Casden, of Longmeadow, Mass. died April 16, 2011. He was the husband of Eleanore (Waldman) Casden. Born in Holyoke, Mass., he was the son of the late Herman and Eva (Roth) Cohen.  In addition to his wife, he is survived by his children, Lisa (Alan Parisse) Casden of Boulder, Colo. and son Cory Casden of Longmeadow, Mass.; and his brother Joseph and sister-in-law Susan of Enfield.