Depp has Alsatian origin. Daub has Lausatian origin. During the Palatine Exodus, many mistakes in name registration occurred while entering or leaving ports. They may have been mistaken as the same name in Ireland.
I am looking for a surname that had changed through 3 generations in Pennsylvania! Patschet to Patsches to Patches or Patchit.
Arriving in Pennsylvania before 1840 from Ireland, William Patschet spoke a german dialect. I wonder what his last name may have been before 1709, as I have not found any similar surnames on the Irish Palatine lists.