Did Jane Austen have a brother?

"Ah, Mother! How do you do?" said he, giving her a hearty shake of the hand. "Where did you get that quiz of a hat? It makes you look like an old witch. Here is Morland and I come to stay a few days with you, so you must look out for a couple of good beds somewhere near." And this address seemed to satisfy all the fondest wishes of the mother's heart, for she received him with the most delighted and exulting affection. On his two younger sisters he then bestowed an equal portion of his fraternal tenderness, for he asked each of them how they did, and observed that they both looked very ugly.  -- Northanger Abbey