### Clue: Mother Goose at first seen by American priest (5)
### Answer: MAGUS 
 ### Explanation: MA(*Mother*) + first letter(*at first seen*), G, of the word *Goose* +(*by*)  US(*American*).  Defn:  A Zoroastrian *priest* reputed to possess supernatural powers.  The word also means one of the 3 wise men bearing gifts to the baby Jesus; and sorcerer, ie. magician.