In the old town of Ferns, County Wexford, you'll find the impressive old stones of Ferns Castle. It's a grand old fort whose very presence seems to make history whisper. This isn't just some pretty ruin; it's a place mixed up with some of the biggest moments in Irish history. It's a place where stories of bravery come to life, and where hidden secrets in its walls tell of power, fights, and just…