Celtic Heroes

I am haveing trouble finding all seven keys could anyone help?

1st was in King Grotspews throneroom in Crookback (i waited about 10 minutes or so for spawn)

2nd was on the northernmost point of the Northern Peninsula

3rd was in the middle boss room (Avatar of Donn room) in the Catacombs

4th was in Shalemont in the far south camp right behind where Ironspike spawns next to one of the jailers

5th was in Shalemont up by the castle where Luther and Atrisal spawn. if you are looking at the castle he spawns just to the left side of it.

6th was in the Stonevale faerie grove on the South Road

7th was in the Stonevale Druid Grove just to the right of the big tree

Also, the spawn times on a few seemed long; to the point I found myself wondering if I was waiting in the right spot. In time though they all appeared. None of them were difficult to kill.