Theodore P. Kasseris of Sudbury passed away suddenly on November 16, 2019. Beloved husband of Anna (Apessos) Kasseris. Loving father of Anastasia Mariolis & her husband Alexandros, Peter, Michael & his wife Anna and Maria Kasseris. Brother of Georgia, Ioanna, Dionysias, Ifigenia, Angeliki, and the late Michael, Demetri, and Nikolaos. Grandfather of Ioannis and Theodoros Mariolis. Son in law of Maria Apessos. Also survived by many nieces, nephews, cousins and friends. Funeral services will be held on Thursday, November 21st at 11 am in the Taxiarchae Greek Orthodox Church, 25 Bigelow Ave., Watertown, MA. The visitation on Wednesday, November 20 ^th from 5- 8 pm will be in the Taxiarchae Greek Orthodox Church . Burial in Mt. Pleasant Cemetery, Sudbury, MA. Donations in his memory may be made to the above named church.