Furch (too Furch de Kallenberger a Furch de Freiberg in Bohemia) is a surname of nobility which roots descend from Spain in XI century. Members of this nobility were famous in military services in battles in Perpignan, Gerona and Barcelona. Members of Furch often joined cavalry. Frequent links on members of this noble family are presented typically from 15th century to 19th century, specially events in Barcelona and Berg, 11 and 12 September 1714, when tragically ended dynasty war between Austria empire and Bourbon royal house.
https://en.wikipedia.org/wiki/Furch