Hi!
A short history in german:
http://www.stadt-fischamend.at/startseite/publikationen.htm
Also I can tell you that in 1817 there was a Schnapp Jakob in Fischamend Dorf Nr. 34 living.
There was also a Schnapp Jakob who married in 1774 and 1811 in Fischamend (two times or two different men).
Best regards from Vienna