Fucking about in Ferelden
Dwyllan is an old dwarf who has been through some tough times. This is evident from the scarring across his right eye which he is unable to see through. He works with the Carta to distribute Lyrium to The Mages Collective and other with the gold to pay for it.
He met the party when they came to his house on instructions from Zeke where they beat him at a game of chance and were able to get all the Lyrium they needed at a fair price.