I have finally got the descendants of Samuel Doty database from the Pilgrim Edward Doty Society up and running. I have searched for the names you sent me, but no luck.
The database, however, has not been updated since the early 1990s, and a lot of information has come in since that time. I will be working to get it updated as I can, but it will probably be many months before I can get all that done. However, I will continue to keep your question on file, and will check the names again at some future date.
If, in the meantime, you find some further information, please do forward it on to me.