There several simple banishing spells available on this website for use. Just be careful in your intent and what you want them to do, you could do a lot of permanent damage without thinking about it. Or you can write your on spell for it those that we create ourselves are more powerful because we put our heart and soul into them.
I suggest that if you want to banish your familia, that you remove yourself from them. There is no reason to involve magic in such immature trivial pursuits. Although, I am very intrigued as to why you would want to think of banishing your familia. If you would like to divulge into why you want to do this, I may be able to point you in the right direction, away from such extreme, and RECKLESS ideas.
Re: I need urgent help! By: Beagna / Beginner Apr 24, 2013
Post # 7
When I need to get rid of my family for a little while, but can't seem to travel far enough to be out of their reach, I just do a Fear spell or a Redirection spell... The Fear spell will make them afraid to find you, and the Redirection spell will make them suddenly need to leave or forget what they came for, if they do manage to find you. A Shield or Cloaking spell could work too, which would just make you impossible to find for them. All are easy to reverse and wouldn't do any damage to your relationship with them.
I'm sure there are plenty of those spells in the Spells section of this site.