Spending the week in Utah at the Family History Library. Found lots of church records of Hvizda's in the Roman Catholic Church records from Hazslin.
All of the records at the church after 1889 have the name spell HVIZDA. Prior to that, the records are spelled HVIEZDA. There was a change of priests at this time in the parish, so I would guess that is why the spelling changes.
There are very few entries for this name prior to 1865...thinking this is not their original town. After Janos gets out of the military in 1889 and settles here, there are several Hvizda families showing up in the records. They seem to be married to Zapatocki and Vagatski quite often.
It appears this Janos Hvizda married Zsuzsanna Mestsan (later spellings include Meschan and Mezshan)while living in Hazslin. They later immigrated to Mt. Carmel, PA in the USA.
The part of Hungary that this line of the Hvizda family immigrated is in Saros County. It is in present day Slovakia. At different times it was Hungarian, or part of the Austrian-Hungarian Empire. Previous records I had found in PA erroniously listed them as from Austria.
Looking forward to hearing from other Hvizda relatives.