As a native Hungarian speaker I believe that I can give back the versatility of Hungarian language even in English translations, knowing the delicate differences between expressions that might be considered and plain synonyms in a dictionary.
I'm also familiar with most legal and medical terms that might be used in the official documents as well as their english counterparts, since I know the administrative system of Hungary but also had to translate most of my own documents when moving abroad.
I can assure complete confidentiality and reliability regarding your family matters and I'd treat your documents with all due respect.
Also, as a hungarian expatriate, it would mean a lot to me to help a family discover their own history, I would feel honored.