Archive from 1899: Hello, I’m Grindelwald.(9)
That man has obviously no idea of the arrogance he presented. He has illegelly broken into a household, and in front of him stands one of most excellent wizards that graduated from Hogwarts, who has no fewer than thirty combat experiences! But Dumbledore finds it hard to resist him, it's rather his condescending words than his merald-green owl-like eyes that makes him more persuasive.
“Upstairs living room, Aberforth’s Cello. Hope you do not need I to remind you, that my brother–” the pale wounded wizard disappeared again, without making out a single whisper of ‘apparate’ “He couldn’t be more age than I, but his sorcery…”