Sniffle...sniffle...Visenad sounds like a believable last name, given that it is also a believable village name. I love the sound of it. I also have secretly adored your name as a whole for some time now (okay, for like, two weeks only), but didn't see a proper place to mention this.
Jacien is also a surname, as well as a first name. Just thought I would mention it.
That is to say, don't change your name.

If nothing else, your mom or dad could have been bad at spelling, meant to name you Jason, and ended up with Jacien instead (or the person who was supposed to record your name misheard it...there are so many possible explanations for the variance!).