Hi Judith, no I don't think they are connected to Mary Jane Davis. She emigrated to NY in 1840 and married Friederik Propst (a German from Hamburg), they had 4 children Abby (died in infancy), Eustace Barron, Annette and Frederick Jnr. (my Great Grandfather). I have plenty of info on them but I just want to know where Mary Jane came from and who are her parents.