Mary Helen “Maureen” (Cassells) Twohig, of Dorchester, May 9, 2012.  Beloved wife of the late James A. “Seamus” Twohig.  Loving mother of Patrick and his wife Carmel Carroll of Carlow, Ireland, Amanda Twohig of Quincy, Fiona Vacca and her husband Ralph of Needham, Elaine Conroy and her husband Kevin of Quincy, and Claire Cone and her husband William of San Diego, CA. Dear grandmother of Alan, Barry, Calam, Dara, Adrian, Jennifer, Cole, Claire, and Thomas.  Dear sister of Eamon, Vivien, and Ambrose Cassells all of Ireland, Sheila Meade of Manchester, England, Joan Rispin of Manchester, England and the late PJ and Jack Cassells.  A Mass of Christian Burial will be celebrated in Saint Brendan’s Church, 589 Gallivan Blvd., Dorchester,  Tuesday, May 15 at 12:00PM.  Relatives and friends invited.  Visiting hours Monday, 4-7 PM in Dolan Funeral Home, 460 Granite Avenue, MILTON. Interment Cedar Grove Cemetery. In lieu of flowers donations in Maureen’s name may be sent to Hospice of the Good Shepherd, 2042 Beacon St., Newton, MA 02468.