My dad thinks he remembers hearing of an Aunt Gert which would be his Father's Aunt. His grandmother had several siblings that migrated to NYC. I have some listed in my tree as well as their parents names. Hope it gives you a path to follow. If not. Good luck in your search.
PS this particular Rawlins branch originates in the village of Ebenezer in the parish of St. Phillip in Barbados. there are two families with this spelling on the island but not related.