Going through old boxes of my grandmothers old receipts, tax forms and other stow-aways I found some gems. No, not the $2500 in cash I've found in envelopes so far

some last names from my grandparents wedding certificate
grandfathers mother:
Warchola
grandmothers mother:
Chawula
These were from French forms so bear in mind that transliteration, but what's the background of these names? Warhola obviously sounds very 'Andy Warhol' so Rusyn clearly....but anything else you geneology geniuses can help with?
ps: can anyone help me with the surname, either spelled "jurewa, jerewa, or yuriva" (there's a village in Kyiv area called Жарева, sounds like root might be russian word for "fry" but its such a mystery still....)