Diane (Eisenstein) Guthart, 73, of Newington, died June 17. She was the wife of Frederick Guthart. Born and raised in Middletown, she was the daughter of the late Bernard and Emma (Freedman) Eisenstein. In addition to her husband, she is survived by her daughter Neeli Mann and her husband Douglas of Cherry Hill, N.J.; her grandchildren, Aaron and Addi Mann; her sister, Myra Finkelstein and her husband David of Portland; her brother-in-law Leonard Guthart of Newington; and many nieces, nephews, and cousins.