Thank you both for sharing your suggestions.
BowWow-us, similar suggestion has been discussed, but the names of the Great people will remain generated automatically by the system since they are inherited by the children forming the dynasty. I will be happy to inform you if there is any change in future.
lakomette, when marrying to her husband, a woman takes his family name. There is an exception for Arabic realms where women retain their surname. When children are born they take their father’s name and so on. This is important for keeping the family name and dinasty. More information is available here
http://www95.imperiaonline.org/imperia/game_v6/game/help/?section=great_persons&lang=en&speed=2#great_persons_46.