Gyongyosi

I live in England, my mother was English and my father originated from Hungary. I have been to Hungary on three occassions. Twice in the early 70's and in 1997. My father Istvan Gyongyosi was born in Budapest 1918 and moved to Kiskunmajsa at the age of seven. His mothers maiden name was Lenger. I would love to hear from anyone with either of the surnames mentioned and also anyone who think they may have known him.