Outside of Sen's Fortress you see a knight sitting down murmuring to himself. Eventually he notices you

Oh-hoh! Forgive me. I was absorbed in thought. I am Siegmeyer or Catarina. Quite honestly, I have run flat up against a wall. Or, A gate, I should say. The thing just won't budge. No matter how long I wait. And, oh, I have waited! So, here I sit, in quite a pickle. Weighing me options, so to speak! Hah hah hah hah! Ah, but what is your name, stranger?