LAT

Lewis Short

Pythias (noun M) : a false reading for Phintias, v. h. v.
Charlton T. Lewis, Charles Short, A Latin Dictionary

Lewis Short

Pȳthiăs (noun F) :
* Name of a female slave, Ter. Eun. 3, 2, 47 al.; also in a comedy of Caecilius,Hor. A. P. 238 Schol. Cruq and Orell.; Turp. ap. Non. p. 281, 26.
Charlton T. Lewis, Charles Short, A Latin Dictionary

PIR

Feminine Personal name
Confirmed occurences in the Roman Empire:
Prosopographia Imperii Romani
memory