As you can see the same second name can have more than one "coat of arms".
As time goes, the coat of arms of a family becomes more and more complete, takeing characteristics of people who join the family, as an example, when somebody gets married the woman should add her characteristics to the family coat of arms.
In this way, a quite complicate coat of arms should have characteristics of grandfather on father`s side and mother`s side aswell.
Here you can see six coat of arms that i have composed of a total of sevenb (the seventh one is incomplete by the moment.