Hello John,
the correct spelling is Hauderer.
A Hauderer was a coachman with own wagon(s) and horse(s) who did
transports for others.
Brigitte Jahnke
Greetings Peter, Alfons and Briggitte,
Thaqnk you for that information it is very helpful 
Any chances on the second part of my query? (Or maybe I put it in a fresh
email)
Thanks so much
MfG
John Jones