As far as i am aware and via the various sources that i have used, predominantly 18th century, all the confusion stems from the meeting of pirates on the west coast of Africa late 1719. At the point where Bartholemew Roberts and Edward England were the main men, they between them decided a meeting was needed as the collection of vessels between them was around 7. At risk of drawing yet more unwanted attention to the activities of theirs , it was decide they should split. Roberts went his own way, Edward England went round the Cape of Good Hope into the Indian Ocean. At the meeting they only had one quartermaster, who served all pirate vessels. This change when England went his way, John Taylor was quartermaster, who eventually became a commander of a vessel.(his ego soon took over)
The vessels that England took were "victory" , "fancy" and a snow.(this is where the 2 infamous ships come from and who previously owned them. In amongst this lot La Buse had the snow, it was a vessel of his liking if you go by his form, quick . Plus John Plantain was there aswell, til he decided he wanted to be landed gentry. (with an evil streak) Incidentally, "Indian Queen" was commanded by another pirate, not La Buse. He had the snow.
In relation to William Taylor....this is how letters were signed in return to the Cpt of the vessel who hunted him down to Portobello and who was attempting to persuade Taylor and crew to give up to the British,, when John Taylor was in command of "Cassandra" seeking out his commission from the Spanish.
How did the Cpt know "cassandra" would be there?
Such a stink was caused by this Cpt that he rattled a few official cages and received a blunt reply from Spain.
As for Sigar... In my own personal searching, i can only find his mentioning at the taking of the "cabo" and no where else. although i do have a list of the European crew members of the "cassandra" at Portobello in seeking pardon, non of which mention Sigar/Seegar
Cocklyn, did he not die after attack on fort Wydah? or was that another captain known to la buse , england and taylor. Am confused a little here.
La Buse, got his reputation from being quick and calculated in his attacks, which leans more to the other nickname of his "Le Hawk". perhaps that is more modern poetic prose than reality, i don`t know. However it does suggest that he was a clever , quick thinking man who had his wits about him.