I just spoke with Donald "Hardy" Nelthropp who said that he knew your branch well hat they left St Croix for Puerto Rico in the 1940s. The Cattle herd described further down this page was founded by your ancestors and bought out by his. Bromley was the founder he had several children one of whom Louis went to Puerto Rico with his children which included Ray. There was another son who moved to St Thomas and some are still there. This is an interesting example of chain migration. The von Bithorns moved first in the last century remaining in touch with the family then Louis who was followed by his cousin Hardys brother ___ who went in the late 1950s and lived at Aguadilla for many years before moving back.