Tau Gamma Sigma

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Tau Gamma Sigma (ΤΓΣ), also known as the Triskelions' Grand Sorority, is a traditional sorority in the Philippines. Members call themselves Lady Triskelions. Its fraternity counterpart is Tau Gamma Phi (ΤΓΦ), the Triskelions' Grand Fraternity. The sorority was founded on January 17, 1969, by ten women from the University of the Philippines Diliman who were political science students and friends of Tau Gamma Phi’s founders. The first initiation rites were held in Bustos, Bulacan. The formal sorority structure was ratified in July 1970. In 1972, during martial law, the shared UP Diliman office of Tau Gamma Phi and Tau Gamma Sigma was raided, and both groups were critical of the Marcos administration.

Motto: "A Triskelion firmly believes in the power of reason and not in the use of force as reason."
Pillars: Fortis Voluntas Sororitas (Strength, Freewill, Sisterhood)
Colors: Gold, Green, Black
Symbol: Lady Triskelion
Mascot: Lioness
Patron saint: St. Anthony the Great
Anthem: "Triskelion Hymn"
Headquarters: University of the Philippines Diliman, Quezon City, Metro Manila, Philippines
Type: Traditional, Independent, Active, Local scope
Status: Active
Chapters: 1