You are on the right track with it being a fire and many casualties.
"Please vote to preserve the unique character of Warren…" - Robert Duvall

Could it be
Jonathan Cain
, keyboardist for
Journey
? From his Wiki page, these items match some of your clues:
Jonathan Leonard Friga (born February 26, 1950), known professionally as Jonathan Cain, is an American musician, singer, and songwriter best known as the keyboardist for
Journey
… Cain was a survivor of the Our Lady of the Angels school fire of 1958, in which 92 students and 3 nuns died… He has received two BMI songwriter awards…

From now on I will only give out hints for every three good guesses.
Up to you all to read each and every post to check for them or not.
"Please vote to preserve the unique character of Warren…" - Robert Duvall

Same here
If we take the time to see with the heart and not with the mind, we shall see that we are surrounded completely by angels ~ Carlos Santana

I'm out of guesses.
You asked a pretty question; I've given you the ugly answer.
Fasten Your Seatbelts….
It's Going To Be A Bumpy Night!

Perfect except for the birthday.
If we take the time to see with the heart and not with the mind, we shall see that we are surrounded completely by angels ~ Carlos Santana

Montgomery Clift survived that terrible accident after leaving a party at Taylor's home. I believe he crashed down the hill from her home, and she went down there and held him until the ambulance came.
You asked a pretty question; I've given you the ugly answer.
Fasten Your Seatbelts….
It's Going To Be A Bumpy Night!

I now realize that this may not be as common knowledge as I thought.
And with the few numbers it may take longer than it may to guess this celeb.
I don't want anyone to cheat by looking it up so it is a challenge for me in giving just enough clues that may not be found so easily with Google.
We can do this "20 questions" style if you like.
Here is the first one.
A major entertainment award he won was a….
"Please vote to preserve the unique character of Warren…" - Robert Duvall

Okay
If we take the time to see with the heart and not with the mind, we shall see that we are surrounded completely by angels ~ Carlos Santana

I'll give more hints with more guesses so check in another time!
"Please vote to preserve the unique character of Warren…" - Robert Duvall

Yeah, I noticed that after I replied. I give up
If we take the time to see with the heart and not with the mind, we shall see that we are surrounded completely by angels ~ Carlos Santana

Reeve's birthday does not come close to Taylor's.
Let me rephrase the OP:
I am thinking of a celeb who survived a somewhat famous disaster that was so traumatic to him that it affected him for the rest of his life.
Who was he?
Here is another clue.
There is a good hint that did not come from me in the replies that other guesses came from.
"Please vote to preserve the unique character of Warren…" - Robert Duvall

Christopher Reeve
If we take the time to see with the heart and not with the mind, we shall see that we are surrounded completely by angels ~ Carlos Santana

No.
"Please vote to preserve the unique character of Warren…" - Robert Duvall

Ronald Reagan
If we take the time to see with the heart and not with the mind, we shall see that we are surrounded completely by angels ~ Carlos Santana

Again, read through every post and you will see hints throughout.
Here is another one.
The celeb is born kinda close to Liz Taylor's birthday.
"Please vote to preserve the unique character of Warren…" - Robert Duvall

Liz Taylor
If we take the time to see with the heart and not with the mind, we shall see that we are surrounded completely by angels ~ Carlos Santana

You can guess all you want to and I will respond only if you somehow get it right.
"Please vote to preserve the unique character of Warren…" - Robert Duvall

I have the answer!!!
Alec Baldwin!!!

Not even close.
I am done responding until you stop trolling with bogus guesses unlike others who put some thought or research into it.
"Please vote to preserve the unique character of Warren…" - Robert Duvall

Tom Cruise?

No treats for you!
"Please vote to preserve the unique character of Warren…" - Robert Duvall

Pamela Anderson?

It may help if you read through all the posts before guessing.
"Please vote to preserve the unique character of Warren…" - Robert Duvall