Sorry for the late response. They have not been posting to my email.
At this time there is not enough comparrisons to know one way or the other. In my personal search I have gone from Curbelo in the Canary islands to Curvelo in the Azores Islands and back to Aragon Spain with Curvelo.
Have you checked out the Carvajal/Carbajal project?
contact me @ firstname.lastname@example.org