It was a few weeks after Roger's Execution. Most of his crew members, since he disbanded him crew before he turned him self in to be executed, went into hiding or made their own crews or joined others.

You were a member of Roger's Crew. You knew of Roger's Lover, Rouge, who was pregnant with Roger's child, and knew that the Marines would be trying to find any evidence of Roger having children. So you made the Journey to Baterilla Island, since you knew Rouge as you have met her many times because of her meeting all of Roger's crewmembers before and because you made a promise to your late Captain.