Grandmaster Fellin is not a good and insightful researcher despite being a good implementer.
After Lorist was entitled Duke of the Northlands, the house entitled Grandmasters Sid and Fellin as a viscount. Lorist's reasoning was that without them the household wouldn't have gotten Sid steel armor, steel ballistae and catapults, all of which were central to the Nortons' successes. As for Grandmaster Fellin, he was so moved that he fainted on the spot. When he finally woke, he had his son give him a slap to see whether he was still dreaming.