Wow! That is interesting.This Mary Wallis is my wife, Patsy's, 9th. great grandfather. She is a Derden and its interesting that her Stephen Darden (Derden) may have come to England from France as Hugenots for the same reason andnear the same time as your Wallis.There very well may be a link to Mary Wallis from your Wallis Line.Interesting the Tiffin connection also. All or most of the Tiffin line in US came from Cumberland around Workington in the late 1700s after the American Revolution.Some of the Tiffins in Canada came from other places in England, south of Cumberland.Not too many Tiffins around though.If you go back far enough Tiffin is Scots and then Viking from Orkney Islands.Where did your husband's Tiffins come from I wonder?