Diane (Kurtz) O'Brien, 65 of Braintree, passed away peacefully on April 25, 2019, at South Shore Hospital, surrounded by her loving family. Diane was the beloved wife of Kevin P. O'Brien, devoted mother to Kevin P. O'Brien II, Taryn O'Brien and her fiancé Michael Casagrande, and proud Gammy to Noelle Casagrande. She was the loving daughter of the late Leo and Eileen Kurtz. Diane was predeceased by her sister Jacqueline, and is survived by her siblings: Charlene, Peter, Richard, Eileen, Billy, and many nieces, nephews and cousins. Diane was a graduate of Cohasset High School, class of 1972. She was a woman of countless talents and passions. Family and friends are invited to celebrate Diane's life on Thursday May 2, 2019 from 4-7pm at McNamara Sparrell Funeral Home, 160 So. Main Street (across from St. Anthony's Church), Cohasset, MA 02025. A funeral Mass will be celebrated on Friday May 3, 2019 at 10am in St. Anthony's Church, Cohasset. In lieu of flowers, donations can be made to the George H. Mealy Post #118, 98 Summer St., Cohasset, MA 02025.