I'm hanged if I know!

I have absolutely no idea! I'm hanged if I know how to fill out these tax forms!

Name	Pronounced	Usage
Euphemios	-	Ancient Greek
Sushil	-	Indian, Hindi, Marathi, Nepali
Philippos	-	Ancient Greek, Biblical Greek
Ceallach	KEL-akh	Irish
Betsey	['betsi]
Panther	-	Ancient Greek