423. During the Battle of Hogwarts, the head of Nearly Headless Nick finally came off. After school restorations were completed, he joined the Headless Hunt. Thus, Gryffindor needed a new house ghost. There were many young applicants, but the title was given to a certain red headed ghost who came from many generations of Gryffindors. Twelve years later, the first of the next generation started to trickle in, and a large group of eleven year olds were excited to meet their beloved uncle, one at a time.