[Perikles]

Originally Posted by Perikles

and even more confusing, Spanish a introducing the indirect object such as in le escribió una carta a su padre..

Originally Posted by Luna Azul

You got it right when talking about the DO.. But.. don't you say "he wrote a letter to his father"? .

Yes, that was my point. In this case, the Spanish a introduces an indirect object (to his father). This is why the "personal a" is confusing, because it looks pretty much the same.