Marius Delphus
Adventurer
Another vote for Mage: The Sorcerer's Crusade, with Sorcerer's Crusade Companion and Swashbuckler's Handbook. Though I haven't actually *played* it, it seems to handle Renaissance/swashbucking fantasy pretty well. If you read between the lines a bit, you can see the natural evolution from WW's version of Ars Magica (that insinuated a coming World of Darkness)....