Seas of Mirth are a pirate band based in Derby, UK. They formed in 2008, and have a relaxed attitude to members, with gigs being performed by whoever is around at the time.
Taken from their MySpace page, band members since the beginning have included:
Cannonball Paul
Fruit Shoot Pete
Epileptic Bill Barbossa
Zorba the Blowfish Absorber
The Son o' Smee, Mr ManTits McGee
Mackerel Boy Rogerrr
Lady Toe Nail Fredd
Lady Hornpipe McMc
Ishmail Van Crackerjack III
Ivan the Bastard
Pearl Riverrr
Cap'n Shameless Seamas
Prince Yiannis of Persia
The band played at the Edinburgh Fringe Festival in 2009, and played in a special pirate-themed night at Wiltons Music Hall in London.