Genealogy is never ending and addictive.
Yes, up to 1918 it would be Hungarian spelling [ after 1920 for a short while Slovak [Czechoslovakia] and presently Polish spelling.
A very bright and colorful map to find Chizsne, Arva megye, Hungary should help might you find a location for other ancestors in the church records.http://lazarus.elte.hu/hun/tantort/2003/palyazat/index.htmhttp://lazarus.elte.hu/hun/tantort/2003/palyazat/37-49_beszt...
As to the spelling of SVIENTY, I suppose it matters who was the boss. You should have a Magyar spelling; Slovak spelling, in between as well as even Polish.
The town of Chyzne is 2km from Slovak Republic's border. https://mapy.cz/zakladni?x=19.6888579&y=49.4173534&z...
Could this SVIENTY be a distant relative?
SVIENTY in Slovakia's phone book:https://telefonny.zoznam.sk/svienty/slovensko/
No NEMTUSAK but NEMTUŠIAK in Slovakia.
One more map:http://igrek.amzp.pl/mapindex.php?cat=wig100
top of the map; down with 32 to CHYZ'NE. http://maps.mapywig.org/m/WIG_maps/series/100K_300dpi/P51_S2...
Since the location Chyzne is in Malopolskie wojewodztwo, you might want to throw a wider net and put a query on there as well.https://www.ancestry.com/boards/localities.ceeurope.poland.m...