WEISS, Dr. Thomas Keith, of Waltham, formerly of Sherborn, was entered into rest on April 20, 2019 at 71 years of age. Beloved partner of 20+ years of Mary McCall. Devoted father of Nathaniel Weiss and his partner Giustina Clarence-Smith, and Anna Weiss and her husband Thanos Papaϊoannou. Loving brother of William Weiss and his wife Betsy Abeles Weiss. Dear son of the late David and Amy (Trebbin) Weiss. Funeral service will be held on Monday, April 22, 2019 at 2:30 PM at Stanetsky Memorial Chapels, 1668 Beacon Street, BROOKLINE. Burial will be at the Mount of Olives Cemetery in Jerusalem.