Who did write Shakespear

When I was on cruise and touring Messina in Sicily, the guide told us William was actually Italian and from Messina.
First I had ever heard of that.........
Strangely I come back to Sydney and just appearing locally is Anonymous (film) -
The film is proposing that the plays were written by Edward de Vere, 17th Earl of Oxford.
The society that pushes him has some comments on the film Shakespeare-Oxford Society » Anonymous, The Movie
Quote "Of course Roland Emmerich and the screenwriter John Orloff took cinematic liberties with history in creating the film but that’s what storytellers do."
So even they say the film is not history!!!

This seems a sound discussion on Shakespeare authorship question - Wikipedia, the free encyclopedia
Analysis says that Shakespear's works were all written by one person.
This discusses the claims for Francis Bacon, the 6th Earl of Derby, Christopher Marlowe, and the Earl of Oxford.
I understand that Oxford has replaced the other men as the main claimant.
Edward de Vere mentions some works that he wrote - I could not see any evidence that these have been analysed for similarities to Shakespear's works? De Vere died in 1604 and yet new Shakespear plays were being performed upto 1613. If Oxford had his actual own works published why would be shy about his Shakespear works? And he had his own group of players - why would he provide his Shakespear works to another group of players?
The claims for him seem to be based on his European tour and that he visited Italian places that Shakespear used in his plays. Nothing is known of Shakespear going outside England and so Oxford must have written these works. Hardly convincing - as he was around theatres perhaps Shakespear listened to his memories of these places or some other tourists.

I'll probably see Anonymous as it covers one of my favourite periods of English history and the graphics of London are said to be excellent but its ideas are nonsense.....
A review of the film - the writer supports Shakespeare
Shakespeare speculation and conspiracy tales - The Drum Opinion (Australian Broadcasting Corporation)
and he makes the point that Emmerich makes very Inventive history movies - well basically real history drops of of sight - for the sake of the story

Messina: The Forgotten Home of Shakespeare « Shakespeare Politics and Italy Blog
Willy or Won't He?: Crollalanza = Shakespeare?
Etheric Warriors Forum :: discusses Michelangelo Florio Crollalanza Aka The Bard?
One comments states "It's a pity the videos are not subtitled because they are very accurate with a lot more insights and coincidences; for example, one of those scholars states that one of Michelangelo Florio Crollalanza's teachers at Padua appears in one of the plays. "
Now that is interesting........

Now if this Michelangelo could learn English so well to write Shakespear and invent so many words then I think he must be a greater genius than his namesake the artist of the Sistine Chapel.
But do read the forum above - it has a lot to say - has anyone confirmed the facts etc

In meantime I'll stick with good old William of Stratford