Thank you very much for finding all this information for me, I'm so grateful.
The only information I have of my Grandmother's family and my Grandfather's family (his Father's side) are just names that were written down in a conversation between my Cousin and my Grandfather, years before his death. I also had my Grandmother's passport to go by too.
I know much about my Grandfather's Mother's side as he was the illegitimate son of Lajos's brother Peter Csaszar and Valeria Gobertina Erodody.
My grandparents were very closely related as Erzebet's Grandfather was also Istvan's Uncle.
Also known is that Lajos had 5 other sibs, them being: Peter (my Grandfather's Father), Agota, Imrie possibly spelt Imre, Julia or Julianna and Ester or Eszter.
Lajos parents were Maria Tasi and Pysta possible Pista or Istvan Csaszar. Lajos's Grandfathers first name was Anotole.
It's a shame I don't know Hungarian, I end up having to use 'Google translation' to find out what everything means.
In my search for information I am indeed finding that 'Nagy' is a common surname.
I'll try looking around in the 'Family search' site to find more information.
Thank you again!
With much gratitude