The Flying Ypotryll
The Flying Ypotryll is a household of Stormhold run by privateer Lord Hanbal Al Barbary. His 'crew' are skilled in many fields and much more devious in others. Just make sure you can afford their services!
The main symbol of the household is a blue field with a white ypotryll skull on a pair of crossed yellow cutlasses, and they can be distinguished by their prominent display of blue and yellow everywhere (along with pirate miscellany).
Their website: http://www.ypotryll.tk