Save Type Surname (from nickname) Usage Vietnamese Pronounced Pron. /ton˧˧.tʰət̚˧˦/, /toŋ˧˧.tʰək̚˦˧˥/, /toŋ˧˧.tʰək̚˦˥/ [key·simplify] Meaning & History From Sino-Vietnamese 宗室 (tông thất) meaning "imperial clan", originally given to members of the royal family of the Nguyễn dynasty.