Yes, they were murdered by Lord Voldemort in 1981.
nope
There is only one Harry Potter, and he doesn't die in Azkaban.
They died to protect Harry: if they hadn't died the whole story would be very different or maybe even not have existed. The whole concept of Harry Potter depends solely on the death of his parents.
Voldemort killed him to try to get to Harry..
about 22 if your counting Hedwig
Yes they were both killed on the 31st October 1981.
The actor? Yes, he died. That's why another actor played Dumbledore in the remaining Harry Potter movies.
Harry Ashton died on October 15, 1931.
Harry Nesbitt died on October 21, 1968.
Harry Pachter died on October 30, 1998.
Harry Dresselhuys died on October 26, 2000.
Harry Golder died on October 16, 1968.