I am confused about some persons details fields: In Greece some years ago, women after they married took the surname of the husband and this was the only surname they had from now on. For example a woman called Maria Antoniou (Antoniou is the surname) after she married a man called George Hristidis is called Maria Hristidis from now on. In which fields should I write the 2 surnames (her family surname and her husbands surname)?

Thank you!