User blog comment:Lord Loss/Monster Hunter Theory... Blog/@comment-6050823-20140615152549/@comment-6050823-20140615172816

There was one manner thing I forgot post with this info. In the Crimson Fatalis quest in MH4, it said that Crimson Fatalis also destroyed the Castle Schrade and that it was another monster that appeared in the Castle Schrade. So yeah, White Fatalis might have been to the Castle Schrade before as well.