Infant Alyssa Marie Monahan, two months old, of 34 Joppa Road, Merrimack, NH died suddenly June 16, 2001, at Boston Children's Hospital, Boston, Ma. She was born on March 31, 2001, in Nashua, NH the daughter of William and Lindsey (Gleeson) Monahan and had been a resident of Merrimack. Family members include her parents, her brother, Thomas ''Big Tommy'' Monahan, all of Merrimack, her maternal grandparents John and Beryl (Day) Gleeson of Nashua, her godmother Catherine Monbleau of Nashua, two aunts, Julie Gleason of Nashua and Mrs. Mark (Suzanne) Valcour of Litchfield, NH, two uncles Kenneth Monahan of Hooksett and Richard Monahan and his wife Patricia of Palmer, Alaska, several cousins. SERVICES: A calling hour will be at the Cremation Society of New Hampshire, an affiliate of the Phaneuf Funeral Homes, 243 Hanover Street, Wednesday afternoon at 4 PM with a service immediately following in the funeral home chapel at 5 PM.