Hi,

I looked in Google for Csiki and found many items - the first item Csíki Ernő. When I added 'Joszef' there are more. I do not know your relativees, but Transylvania was a large place.

Other people may help with better websites, I started with http://www.radixindex.com/en/surname_index/surname/csiki.

Hope this helps. Good luck.