Before he left port, that local map expert left a message for you - he asks you to join him on his plantation, where he offers to continue helping you shed some light on this matter.
Start of the first branch of the RP Missions line. This mission simply involves a trip to a nearby town where you have another chat with the cartographer whom you spoke with during A Man of Wealth and Taste, he will give you your next mission to continue the Storyline.
The way this story jumps between locations and back to his home in your Starter Port, depending on the order you completed the RP Mission path, could cause things to become slightly out-of-sync. Each of your contacts now has an Assistant whom you will report to for reward turn-ins.
for British Players: Clerk Adelaide Clevinger
for French Players: Elodie Chevalier
for Spanish Players: Ynes Osario
for Pirate Players: Elise Thorpe