"Sir John Field, b 1525 East Ardsley England" came up in a DNA match list. He was an astronomer. The surnames "Field" and "Fields" are found frequently this family DNA matches. However, we have no record of that name anywhere in our known family tree. One hypothesis is that a Field descendant was a pirate, other criminal, or a descendant of one, and wanted to start over and become more acceptable with a new name. It makes genealogy very difficult but, maybe nowadays, not impossible. Thank you in advance for any light you could shed into this dark mystery.