In this Vietnamese name, the surname is Tôn Thất (not to be confused with Tôn), but is often simplified to Tonthat in English-language text. In accordance with Vietnamese custom, this person should be referred to by the given name, Thuyet.
^Vietnamese Royal Exile in Japan p.38 "He had secured a safe meeting place to be with Cuồng Để thanks to the help of his Chinese friends in Yokohama "Châu took Cường Để to Canton to visit Liu Yung-fu and Tôn Thất Thuyết, great long-time sympathisers of the Vietnamese cause."
^Văn Đào Hoàng Viet Nam Quoc Dan Dang: A Contemporary History 2008 "When the Huế Court surrendered itself to the French, Tôn Thất Thuyết, a high-ranking mandarin of the Court, ..."
^Charles Keith Catholic Vietnam: A Church from Empire to Nation 2012 p. 52 "In July 1885, as Qing forces were withdrawing, the regent Tôn Thất Thuyết led an attack on the French garrison at huế and escaped with the young emperor hàm nghi into the mountains. Thuyết called for a general uprising and for all of the ..."