A) you should not take kids away from their father.

b) Who ever has their name on the title is who the care belong to. But what does it matter? if you gave it to him let him have it. don't try and take it back because your upset.

c) Make your life simple. Work out a joint custody agreement you can live with. Then take up a hobby to occupy all the time you will have to yourself because you no longer spend it fighting with your X.