Percival is the second name. Dumbledore's full name is Albus Percival Wulfric Brian Dumbledore.
The order of the Pheonix
If you are referring to the book: Harry reads an article about Dumbledore written by Elphias Doge; Dumbledores old friend. It explains a lot about Dumbledores childhood. After that harry reads another article about Dumbledore written by Rita Skeeter. This article explains more detail about Dumbledores childhood too.
Dumbledore's pet phoenix is named Fawkes.
knock
with the magic of dumbledores testicles
Wand coloured.
In the Room of Requirement.
WHERE? IF you mean what is his patronus, I think it's a phoenix
Phoenix's feather - It is feather from Dumbledores phoenix Fawkes.
That's classified information.
Deluminator or put-outer which was given to him in dumbledores will
He's kind, fair, gentle, mysterious, powerful, wise, and very old...