man? thats my surname, was trying to find out my family tree, by the way i am from liverpool uk, and?

found a web site that let you find all the mans leaving the port of liverpool/uk, to settle abroad and make a new life. i was surprised to find that an adolf man left the port of liverpool,, well i know adolf is not an english/british name, i thought it might be dutch.. but german?, then someone told me that it could be austrian,, any ideas of the origin of man,, and no funny comments please ,, lived with this name all my life, so heard them all