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Dumbledore's full name is Albus Percival Wulfric Brian Dumbledore, giving him three middle names.
Albus Percival Wulfric Brian Dumbledore and his brother was called Aberforth Dumbledore He also had a sister called Ariana Dumbledore.
Albus Dumbledore was a half-blood.
Albus Dumbledore is male.
Aberforth Dumbledore is his full name. No middle name has ever been mentioned.