Did you scry for Bronthion? If so, ask about him in the archer's guild, then check the elven village again.

The sord in the stone needs to be put back. Stand close to the stone, and drop the sword on it when it glows; I don't know if you can still do this after it has started killing. Brontion will not be killed.

The holy sword is on the first level of Iona's dungeon.
VERY BIG SPOILER ON HOLY ITEMS

There is a Halberd of the Rock with a description like 'there is something strange about this weapon' in the cursed Abbey, which will drain your stamina. Check your weapon inventory, and drop or sell it.

You were suppose to get kicked out of the castle. Did you ask Zandalor about the sword? It was the Sword of Lies, which Janus found while playing. It possessed him and turned him evil.

After talking to the other healers in the inn, go back and scry for Goemoe again; his location will be revealed.

For the imp council member, that is a bug.
FIX for broken Imp Council Member quest