I need an answer from Austrians who have access to the Hoffburg museum?

One of my predecessors was a count (grauf), was of Polish origin (presumably) and have probably taken part in the military opression of the Hungarian uprising in 1848. His name was something like Filiansky but he may have had a different name with a similar pronunciation. I am desperate to find his identity since I have long been looking for him but have never succeded in finding anything about him at all! So I would appreciate beyond value if anybody told me anything relevant about my Great-great- ... -great-grandfather.