"Albus Dumbledore is the greatest Headmaster Hogwarts has ever had"

The naming of Professor Albus Percival Wulfric Brian Dumbledore is thought to have been inspired by Rowling’s school headmaster, Alfred Dunn. Others believe that his four names represent the British Isles: Albus (a masculine form for Alba, Scotland’s ancient name), Percival (a Welsh knight mentioned in the Arthurian tales), Wulfric (a name found in the Anglo-Saxon legends thus representing England) and Brian (there was an Irish high-king called Brian Boru).

Dumbledore is an 18th century English term meaning bumblebee.