I have many relatives with Zeidler surname from the end of 1700s.
It begging with Anton Zeidler who married with Agnes Anna Rasol and they had 3 sons.
Franz Zeidler, Josef Zeidler and Ferdinand Zeidler. I don't know too much about them but I have some picture and an old family tree which was created by my Great-grandfather who was Konrad Hugo. Josef Zeidler has a daughter Maria Zeidler.
Thats what I know but I had many other photos.