Wow, that's pretty amazing. I would love to connect my Preston line with yours. The furthest I go back is to Roger Preston (1614-1666) of London and his wife Martha. I have no idea if we're talking about the same Roger, but maybe so. I only have one of his sons, and then one of each of their sons for many generations, so my information is limited. My line goes (most of which lived in Massachusettes): Roger(1614)>Samuel(1651)>Samuel(1672)>Samuel(1709)>James(1729)>James(1775)>James(1803)>John Boyd(1836), and finally fans out. Do you see any connections?
Let me know!