I most certainly need some pointers in this situation.in the event of Sheogorath appearing during a Summoning,unwanted,not the Prince that i wished to talk to,that Prince is Hermaeus Mora.What are my next steps. If i go back to save game will he always appear whatever i do.My summoning would be through a Temple,not a Coven.Though i am not sure if that helps one bit,apart from the cost:THANKS

http://www.uesp.net/wiki/Daggerfall:Holidays

I suppose you are summoning on the right day?

Sheogorath can be summoned any day there is a storm, and often he does this if it's stormy even if you're able to summon another Daedroth. Yes, he's not always a nice guy, he can be an annoying doofus. Try again when it clears up, if possible.

Yea, Sheogorath will sometimes show up in place of the daedra you actually tried to summon. Just try another day--or year.

If I remember correctly, Sheogorath has a 5% chance of showing up. On a rainy day it's 10% and during a storm it's 15%.

Golden Sinner : That's the link you're looking for : http://www.uesp.net/wiki/Daggerfall%3a%44aedra_Summoning#Summoning_Days