Frankly speaking, my initial game PM states that, although it's not one of my solid objectives for this game, it would be nice to be able to secure support for an Austrian Prince for the Polish throne, leading to Galician unification with Poland. "Alas, it seems but a pipe dream at the moment."
Does it make sense now why I question your authenticity as an Austrian monarch? There's no definitive proof to tell me that you're Austrian, and due to that note in my PM, I can reasonably wonder if you're a Pretender Monarch.