Let's try to make some sort of walkthrough?
Maximus. Located at the plaza near the pottom of the Temple of the Gods
Romius Located to the right from slave market.
Aeliana. The girl in the Temple.
Attius. Near the entry to "Temple" part of City
Message board. Near the entry to "Temple" part of City. (across from Atticus)
Will keep updating.
Unfinished quests:
Priest's treasure - don't know where the treasure is or what will happen of you will lie about it
Damsel in distress - don't know where the actual letter is. Vases I've searched are either empty or contain gold.
Fearing for the worst' - haven't seen this quest at all.[/SPOILER]