Albert Runcorn works in the Ministry of Magic in a very position. He is responsible for detecting and arresting Muggle-born witches and wizards. He uncovers the original family tree of a Muggle-born wizard named Dirk Cresswell and then gets him into trouble. However, in Harry Potter and the Deathly Hallows, Albert Runcorn is rarely seen, and most of what we see is Harry Potter disguised as Albert to gain access to the Ministry of Magic.