Wikipedia is your friend. posted by elendil71 at 9:51 AM on July 8
Long John Silver from Treasure Island is a favourite of mine (and also works as a nickname for a penis).
There have also been many real pirates with awesome names like Blackbeard (Edward Teach), Henry Morgan, Stede Bonnet, Black Bart (Bartholomew Roberts), Calico Jack/Jack Rackham, William Kidd, Francis Drake etc. (can't think of more off the top of my head). They were all, for the most part, pirates "of the Caribbean" as we see in pop culture (which I assume is what you are looking for).
But really, you can take the term for any ship board item or device, combine it with a rhyming name and your set:
Bootstrap Bill
Forecastle Frank
Baggywrinkle Barney
And so on. There will be a natural assumption that their nickname originated with some incident related to that item. posted by quin at 10:36 AM on July 8
Somebody's cat, he was called Captain Fishypants. Maybe it's just me.. but that is a tremendous name! (You said pirates. Real or imagined.) posted by mu~ha~ha~ha~har at 10:37 AM on July 8
You may actually want to look at the list of John Hodgman's hobo names (master list) for ideas. A lot of them seem like they would work well as pirate names too. posted by DoctorFedora at 11:09 AM on July 8
posted by Burhanistan at 9:32 AM on July 8