In Edwin R. Deats fine complilation of the family history he conferred with Hiram E. Deats who held the family Bibles that came from Germany.
Other information I have is taken from "Early Germans of New Jersey" which Dad Deats gave to me and was also used by cousin Edwin Deats in Jersey City when he undertook the writing of the Deats family history.
Edwin made no attempt to identify the changes of the spelling of the name used by the various branches as the exact datesthat the changes were made could not be determined.
The spelling of the of the name of my first generation Deats lineage was Adam b. in 1696 and who died in 1776.It was originally Dietz and on some of his passage papers it was Deitz.He has left Bavraia with two brothers and traveled to Bremer Germany. At Bremer they sailed to Scotland and then sailed from Liverpool England to America.
The family that settled in New Jersey changed to Deats.Those in New York seemed to go to Dates, and the cousins in Tewksbury Twp. Hunterdon Co. NJ adopted the spellings of Teats and Teets.Those going on to Ohio and Indiana as well as Alabama, Kentucky and Texas used DEATS.