No, they were not related, at least not closely. It is said that most of the wizarding world is distantly related. Both families did share common roots in where they came from, as Goderick's Hollow was their home town.
Snape kills Dumbledore
Dumbledore
The feather of a phoenix called Fawkes (Dumbledore's phoenix).
The actor? Yes, he died. That's why another actor played Dumbledore in the remaining Harry Potter movies.
Phoenix Feather. Better yet; Fawkes (Dumbledore's Phoenix) feather.
No Harry is not related to dumbledore.
In his will Dumbledore left Harry the Golden Snitch (that Harry had caught in his first Quidditch match) and the sword of Gryffindor (Deathly Hallows Ch. 7) On Harry's first Christmas at Hogwarts - Dumbledore gave him James Potters Invisibilty Cape (Philosophers Stone Ch. 12)
He loves folks He trusts Dumbledore too much He loves boys
Well, let's see... he has the power of the elder wand, Dumbledore protects him, he speaks Parseltoungue, has ultimate power over Voldemort, and has the power of love.
For example, Eliminster and Dumbledore are not related with Oz or Gandalf.
Im not that sure but i think its either dumbledore or robbie Williams. My friend think its gandalf off lord of the rings and that's quite a good guess!
Yes and No. Right before the fall of the Potters and Voldemort, Snape switched to being in the service of Dumbledore. After Voldemort fell, Snape was used by Dumbledore to keep a lookout in case of Voldemort's return, as well as to keep an eye on the remaining Death Eaters not in jail. Once Voldemort returned, Dumbledore had Snape serve Voldemort, yet he was to rely the info back to Dumbledore. Snape being a servant of Dumbledore is very easy to miss in the books and the movies. In the Half Blood Prince, when Snape kills Dumbledore, it was due to the fact the Dumbledore had arranged for Snape to kill him, if Harry was to kill Voldemort.