What was it about Orlando's background which angered frederick?what does this tell us of frederick's character?

Frederick would not have liked the fact that Orlando is the son of the brother whose thrown he usurped. Duke Frederick really had no feelings for his nephews. Duke Frederick was rather cold hearted.

What angered Duke Fredrick was that Orlando was Roland de boys son. and roland and fredrick are arch-enemies . Duke Fredrick is very self-centered selfish and rude because he is a duke and he has alot of power so he is to proud.He was wicked because he usurped his brother so he could have power which i find nasty