Thomais was the daughter of unknown parents. The date and place of her birth have not been found.
Her husband was Simeon Uroš. They were married, but the date and place have not been found. They had no known children.
Note 1
dau. of Giovanni II ORSINI (? - 1335 Arta) & Anna PALAIOLOGINA (KANTAKUZENE) (? - 1357+)