I’ve returned from my mission to secure lore information! I did my best to get what I could out of the Lore Team...
First, in regards to the question about draketamers. Its seems that each order of the Twelve Orders has some type of an animal-related alias. As it happens, those from the Order of Thurandaut call themselves “draketamers”. The NPC Flaviria is the current heir of the Order of Thurandaut. The team mentioned that there might just be a quest that goes into more detail about the draketamers in the future.
Finally, good ol’ Lehko Habhoka…
This is a character whose past is heavily shrouded in mystery and he has been around to many places before arriving in Windurst, so there is good possibility he stopped in Adoulin at some point during his travels.