What is the correct spelling in Gaelic languages for Genevieve?

There isn't one single correct spelling for Genevieve in Gaelic, as there are several Gaelic languages (Scottish Gaelic, Irish Gaelic, Manx Gaelic, etc.), and even within a single language, spelling can vary depending on the transliteration system used and individual preferences.

To get a correct spelling, you'd need to specify which Gaelic language you're interested in. Then, even with that specification, you might get a few slightly different options. A good approach would be to consult a Gaelic dictionary or a speaker of that particular Gaelic language.