Who's the Man?

Because so little is known about Shakespeare there is a serious debate surrounding who he really is.
There are numerous theories as to who the real Shakespeare is. Here are a few of them.
1. Shakespeare is Christopher Marlowe. Marlowe staged his own death to avoid further trouble with the Privy Council, a council created by the queen. Marlowe had had trouble with the council and was accused of heresy. Perhaps assuming a new identity would avoid further trouble.
2. Shakespeare is Sir Francis Bacon, a lawyer, philosopher, and scholar.
3. Shakespeare is Edward de Vere, another writer of the time
4. Shakespeare is William Stanely, the sixth earl of Derby. He was cultured and well traveled. More links on the subject:
http://absoluteshakespeare.com/trivia/facts/facts.htm
http://www.shakespeare-oxford.com/guide.htm#Introduction