Pronunciation?

I've got a silly question... Everyone that I know who has read TBotNS has come up their own interpretation of how the characters names are pronounced. Is there a consensus? For instance: Severian- sev'ear'ian / sever'ian / sev'rea'an / sev'rin Hethor- heh'ther / hea'thoar / heth'oar Just wonderin. y.