Thāis (noun F) : Θαί̈ς * A celebrated courtesan of Athens, Prop. 2, 6, 3; 4 (5), 5, 43; Ov. A. A. 3, 604; id. R. Am. 383 sq. * Another at Rome, Mart. 3, 8; 4, 12. * A courtesan in the Eunuchus of Terence, Ter. Eun. 1, 2, 11; 2, 1, 25.
Charlton T. Lewis, Charles Short, A Latin Dictionary
PIR
Feminine Personal name Confirmed occurences in the Roman Empire:
Veturia Gratilla Thais (Fem, senator), ref: PIR V1 0365 | PIR ID14309