My name is Katalin and I live in Stockholm, Sweden. I have just started to do some research regarding my family and my grandfathers family name was Nógrády (Budapest). It's very important to know if your grandfathers family name was Nogradi or Nógrády, because it's a huge difference. Nógrády family is an old noble surname and they even have their own nobility crest, which I have just found. My grandfather's father was born 1863, so there might be some connection with your grandfather. My grandfather was Nógrády László János, born 30/4 1902 and his parents were Nógrády Antal, born 1863 and Heilauf Klára, born 1868. I have just heard that some relatives to my grandfather left Hungary for U.S.A. Please let me know if I can help you with more information.
Kind regards, Katalin