Now, I'm gonna clarify this here in the OOC a bit ^^ Tarquin is more a mask that Taroyn wears. A mask that is the embodiment of the memories Taroyn chooses to keep from his deceased brother. Though Tarquin acts differently from Taroyn they are still the same person knowledge wise - if you tell one personality something the other knows it. Well mostly the same person... thanks to being a collection of memories being Tarquin gives Taroyn the use of bardic magic while not wearing the pendant allows Taroyn to fully utilize his swordsmanship.
In dnd terms 'Tarquin' is your archetypical bard whereas Taroyn is closer to a combination of the fighter's old Kensai archetype paired with some rogue and assassin... though he doesn't have at the time a proper Kensai-style weapon mostly due to spending so much time as the bard.
But don't tell your characters that OwO; It would be cheating ^_^ We don't like cheaters... Cheaters get dunked...