Dorothy H. (Hallier) Sullivan, age 89, formerly of Stow, MA, Bethany, CT, and West Haven, CT, died at Rivercrest Rehab & Nursing Center in Concord, MA on Sunday, February 2, 2020. She was born on September 25, 1930 to her late parents, Herbert and Helen (Anderson) Hallier. She enjoyed her early years in West Haven, growing up by the beautiful ocean. Dot worked at a bank for many years, but her primary commitment in life was her family. She raised two sons, and admired her four grandchildren. Dot enjoyed reading, crocheting, puzzles, gardening, bingo, and the company of her loyal friends at Plantation Apartments in Stow, where she resided for twenty years. She will be forever missed by her sons, Brian Sullivan and his wife Ritsuko of Acton, and Barry Sullivan and his wife Pamela of Sudbury, her grandchildren, Erika, Jason, Justin, and Carina; one sister, Sharon Linsley and her husband Herbert of Suwanee, GA, as well as nieces, nephews, and friends. Relatives and friends are invited to gather for a period of visitation in the Dee Funeral Home, 27 Bedford Street, Concord Center, on Saturday, February 8th from 4:30 to 5 pm, with a memorial service beginning at 5 pm. Arrangements are under the care of Dee Funeral Home & Cremation Service of Concord.